Database Users

mapping hardware for this device

Hi all,
As i started servicing all pdas for a couple of monthes (only as a hobby, i fix them for friends and relatives), i came across one BA that gave me some trouble.
i got it to replace its LCD that was broken as it was dropped and thats very simple to replace it, so far so good. now it has two main problems :
1. no sound from speaker (even when in speakerphone mode), but there is sound in the stereo earphones (i plugged to the connector by the sd card slot). - i can only assume that a bluetooth handsfree device it will also work.
2. although the backup battery is fully charged, if i remove the main battery even for a brief second, when turned on, the BA acts as if i made a hard reset.
as for solving the problems :
1. using a digital multimeter, i managed to track the conductivity from the internal speaker through its connector, flat ribbon to the connector which connects to the main pcb - so there is no contact problem from the speaker to the main pcb.
using the help from WIKI, i went to site that has the list of all components and their description - the IC that is responsible for audio amp is a MAXIM's MAX4410 which is a stereo headphone driver. a quick look at its charasteristics and typical configuration and i understood that (assuming this is the IC that drives the internal speaker) the speaker should have one pin which is ground and the other goes to the amplified signal from the IC. neither one of the pins showed it has GND to it. so maybe there is a bad GND line to the connector.
2. regarding the backup battery issue i do not know what makes this problem.
I am sharing this info with you all with two ideas in mind :
1. to resolve my problem and know those devices hardware better.
2. because i am quite a while watching xda-developers and WIKI and i got the feeling that a lot of eforth is given to the software side of all those pdas (which is greate!!! keep going, this work helps lots of people and it shows al thos mega corps they are not the only ones), but the hardware is a bit forgotten and left behind. let me tell you this, there are many VERY simple mini projects i made useing electronics (i am an electronics engineer in my profession) that made my life easy . i am now investigating those instruments hardware as i have several ideas to develope useful accessories to my pda (like an external IR transciver to control IR devices like TV,DVD and to communicate with my laptop, and some other ideas) and i believe we can do the same info sharing as done on software side but on the hardware side.
I will thank any ideas, thoghts or commentsabout this matter. Yol.

It seems you have posted this in more than 5 different forums topics.
This will not get you an answer quicker. Please, as this is a BA device, would it be possible to just keep the posts either in the BA topics or in the Upgrading, modifying, unlocking topic.
Please don't feel insulted, it's just that some people use the "view posts since last visit" and saw 8 instances of the same message.
Anyway, to your problem:
1. I guess it is best if you do try first if the bluetooth has sound. If it does, maybe it is the speaker, if not maybe the sounds are set to off for phone sounds. Check the volume slider.
2. Can't help you with the battery problem, sorry

mapping hardware for this device

Hi all,
As i started servicing all pdas for a couple of monthes (only as a hobby, i fix them for friends and relatives), i came across one BA that gave me some trouble.
i got it to replace its LCD that was broken as it was dropped and thats very simple to replace it, so far so good. now it has two main problems :
1. no sound from speaker (even when in speakerphone mode), but there is sound in the stereo earphones (i plugged to the connector by the sd card slot). - i can only assume that a bluetooth handsfree device it will also work.
2. although the backup battery is fully charged, if i remove the main battery even for a brief second, when turned on, the BA acts as if i made a hard reset.
as for solving the problems :
1. using a digital multimeter, i managed to track the conductivity from the internal speaker through its connector, flat ribbon to the connector which connects to the main pcb - so there is no contact problem from the speaker to the main pcb.
using the help from WIKI, i went to site that has the list of all components and their description - the IC that is responsible for audio amp is a MAXIM's MAX4410 which is a stereo headphone driver. a quick look at its charasteristics and typical configuration and i understood that (assuming this is the IC that drives the internal speaker) the speaker should have one pin which is ground and the other goes to the amplified signal from the IC. neither one of the pins showed it has GND to it. so maybe there is a bad GND line to the connector.
2. regarding the backup battery issue i do not know what makes this problem.
I am sharing this info with you all with two ideas in mind :
1. to resolve my problem and know those devices hardware better.
2. because i am quite a while watching xda-developers and WIKI and i got the feeling that a lot of eforth is given to the software side of all those pdas (which is greate!!! keep going, this work helps lots of people and it shows al thos mega corps they are not the only ones), but the hardware is a bit forgotten and left behind. let me tell you this, there are many VERY simple mini projects i made useing electronics (i am an electronics engineer in my profession) that made my life easy . i am now investigating those instruments hardware as i have several ideas to develope useful accessories to my pda (like an external IR transciver to control IR devices like TV,DVD and to communicate with my laptop, and some other ideas) and i believe we can do the same info sharing as done on software side but on the hardware side.
I will thank any ideas, thoghts or commentsabout this matter. Yol.

I think you should post this again, just in case we missed the other 9 duplicate posts... wouldn't this have made most sense in the development and hacking section, pretty much the only section you didn't post to?
V

@Vj LOL
Fault 1) When I hear someone saying 'maybe it has a bad earth' i think of car mechanics 'wiring' and Ford cars! If you have the data sheet, use a 'scope - fixing it should be a piece of cake (IF you know what you are doing)
Fault 2) These devices usually have tiny 3V Li-ion button batteries somewhere inside - find it, replace it.
BTW - search the internet for a SERVICE MANUAL - you NEVER know your luck!
Andy

Fault one the backup battery is designed to keep memory alive not power the unit! I would expect it to act the way you describe.
Audio check the stereo jack, my guess is you'll find the problem there. It's rather common failure.

I never said the battery backup powered the unit, did I? He said removing the main battery & putting it back in acts like a hard reset indicative of a knackered memory backup battery.
I'm making educated guesses based on 15 years experience as an electronics engineer & also that I have just fixed an Xda Exec with EXACTLY this problem (If I'm reading his post correctly that is).
Andy

HeroC's speaker jack vs GPIO

Does anybody happen to know how the HeroC's 1/8" jack is connected to the MSM 7600A inside the Hero? Is there an amplifier circuit buffering it, or are one or two of its pins wired straight to pins on the 7600A? Does it have 2 contacts + ground (mono headphone + mic), or does it have 3 contacts + ground (1 for mic, 2 for stereo, the second of which is ignored when a normal headset is used)? Is there a datasheet somewhere online?
Why? If the headphone jack is wired straight to the 7600A, there's a very, very good chance it can be used for general purpose i/o, above and beyond merely driving a speaker and sampling a microphone. God forbid, if it has 3 signals + ground, we're talking bitbanged SPI. If someone at HTC and/or Qualcomm had a sense of humor, and picked GPIO pins with I2C as a secondary function, well... that would just be pure bliss

no way we're talking spi...I mean just no way...I hope I'm wrong lol

I am not sure what all this means but it sounds exciting. I found a pic of it dissasembled but not a great shot of the headphone jack. Hope it helps.

Well, SPI would mainly depend upon having a 4-contact headphone connector (purely speculating, I put the likelihood at around 30%). All you need to make SPI work is one pin that can be configured as input (MISO) and two pins that can be configured as output (MOSI and SCK).
I2C almost certainly wouldn't be do-able unless some engineer at Qualcomm LITERALLY paired DO and DI as secondary functions for i/o pins suitable for DAC & ADC use as well, and someone at HTC happened to pick the same two pins to use for the headphone jack. On the other hand, if the headphone jack has only 3 contacts (2 i/o + ground), that would guarantee that at least one of them IS bidirectional-capable, because it would have to do double-duty as a PWM-output device AND a voltage comparator (so it could drive one of two stereo headphone drivers, sample the mic of a phone headset, and simultaneously allow the chip to detect when the pin got shorted to ground by the user pressing the 'answer' button.
If nothing else, it could probably do not-quite-I2c-kind-of-ghetto-half-duplex-SPI, using one pin as an output clock, and using the other for input or output as necessary. The nice thing about SPI is that if you're interfacing to your own stuff, the timing can be totally brutal, sloppy, and bitbanged (take SCK high, set MOSI, take SCK low, sample MISO, stir, rinse, & repeat a few billion times)
I'm putting the odds that the headphone jack is connected straight to the 7600A at around 40%. Normally, any sane design would buffer something like an audio circuit so something really bad wouldn't damage the CPU as well... but we're talking about a phone that's basically irreparable by human hands if anything on the board fries anyway, so the real-world advantage of external buffering would be countered by real-world savings from pulling as much external circuitry into the controller as possible.

bitbang3r said:
Well, SPI would mainly depend upon having a 4-contact headphone connector (purely speculating, I put the likelihood at around 30%). All you need to make SPI work is one pin that can be configured as input (MISO) and two pins that can be configured as output (MOSI and SCK).
I2C almost certainly wouldn't be do-able unless some engineer at Qualcomm LITERALLY paired DO and DI as secondary functions for i/o pins suitable for DAC & ADC use as well, and someone at HTC happened to pick the same two pins to use for the headphone jack. On the other hand, if the headphone jack has only 3 contacts (2 i/o + ground), that would guarantee that at least one of them IS bidirectional-capable, because it would have to do double-duty as a PWM-output device AND a voltage comparator (so it could drive one of two stereo headphone drivers, sample the mic of a phone headset, and simultaneously allow the chip to detect when the pin got shorted to ground by the user pressing the 'answer' button.
If nothing else, it could probably do not-quite-I2c-kind-of-ghetto-half-duplex-SPI, using one pin as an output clock, and using the other for input or output as necessary. The nice thing about SPI is that if you're interfacing to your own stuff, the timing can be totally brutal, sloppy, and bitbanged (take SCK high, set MOSI, take SCK low, sample MISO, stir, rinse, & repeat a few billion times)
I'm putting the odds that the headphone jack is connected straight to the 7600A at around 40%. Normally, any sane design would buffer something like an audio circuit so something really bad wouldn't damage the CPU as well... but we're talking about a phone that's basically irreparable by human hands if anything on the board fries anyway, so the real-world advantage of external buffering would be countered by real-world savings from pulling as much external circuitry into the controller as possible.
Click to expand...
Click to collapse
could you put that in english please. LOL just teasing bro

I'm an computer engineering student and you just threw me for a loop. I think what you're trying to say is that if what you think is going on is that it might be possible to use the phone as a microcontroller or have controls like media playback go through the jack. Am I wrong? Just trying to put in non-engineer language.

SPI is basically a shift register protocol. It allows a master to communicate with one (possibly more, if you have additional lines to do addressing) slave(s). The master controls the clock. When the clock is low (ground), the slave is allowed to read the MOSI (Master Out, Slave In) signal, and the master is allowed to read the MISO (Master In, Slave Out) signal. When the clock pin is high (traditionally 5v, but 3.3v, 3.0v, 2.7v, and even lower signal levels are common now), the master and slave aren't allowed to read, and instead take advantage of the opportunity to change the state of their respective output lines to reflect the value of the next bit they want to send.
The main advantage of having a line dedicated to a clock is that you don't have to worry about timing if you're the slave. You don't have to count milliseconds while a pin is high or low. You just watch the clock, read when it goes low, and write when it goes high.
I've also seen circuits that went a step further, and used a MOSI transition while SCK was low (normally taboo) to signal the start of a new byte. In situations like that, if you were the slave, you'd sit there and wait for SCK to go low, then you'd wait until MOSI changed state while SCK was low. From that point, you'd know that it's time to send and receive the next byte.
Most people who get into robots start with serial ports because they're easier to interface with computers, but when you're wiring devices together without a computer in between and basically just bitbanging (taking advantage of the fact that modern processors are so fast compared to what existed 20 years ago, you literally CAN get away with just tapping your foot and busy-waiting while counting clock cycles, and faking out the signals that used to take real hardware to do.

Long story short, He is hoping that the headphone jack is connected straight to the IC so it could possibly be used as a data connection (think kinda like a modern day serial port) if it is.Aiming towards SPI with a smallpossibility of I2C. Exampals
I2C is use by wiimote's to connect to the nunchuck or the motionplus
SPI is used by alot of LCD segmant displayes ( The x3 xbox mod chip uses it for its lcd )
::edit:: didn't see your reply Bitbanger. we must have been typing at the same time

I'm an computer engineering student and you just threw me for a loop. I think what you're trying to say is that if what you think is going on is that it might be possible to use the phone as a microcontroller or have controls like media playback go through the jack. Am I wrong? Just trying to put in non-engineer language.
Click to expand...
Click to collapse
Actually, what I have in mind is a real 4-way gamepad that clamps onto the end and plugs into the headphone jack, with a 3v battery to power it and basically two i/o lines into the phone... clock and data (using something like an Atmel Tiny2313 or Mega48 to read the gamepad switches and broadcast their state to the phone using those two i/o lines).
It's something I've been toying with all the way back to my Samsung SPHi300, but I've always run into insurmountable hardware problems along the way (besides the lack of a 3D printer to make the prototype itself, of course). My i300 had a real serial port and a nice, hackable Dragonball that gave me warm fuzzy m68k feelings of joy, but you couldn't buy a connector for it to save your life, and Samsung's cables were obscenely expensive until long after the i300 faded from view. The SPHi500 would have been perfect with a thumb-operated gamepad in one hand, and the phone (using the keypad for fire buttons) in the other, but it only had USB. I tried IrDA, but Samsung's PalmOS4 ROM was a hacked-up mess. My PPC6700 had a semi-usable joystick, and architecturally was totally alien to me anyway. By the time I got my Touch, I was more comfortable with ARM, but HTC took away the IR and WiFi, leaving only USB and bluetooth. USB was out of the question, and the cheapest bluetooth module you could buy from Sparkfun was about a hundred bucks (I came close to breaking down a few times, though). I was about to finally buy one of their new ~$30 modules to use with my Hero before Christmas, until I found out that phones with 1.5 couldn't use the Android Bluetooth API. Let's just say I think the entire neighborhood heard me shouting obscenities in the general direction of HTC and Sprint when I realized that I couldn't do a thing bluetooth-wise until I had 2.x in my hands

Hardware help needed...

Hi everyone.
Seems this forum has at least a couple of people taking their Prophete apart (as I do) and collecting some hardware know-how.
I have two Prophetes (XDA Neos to be correct) with different problems.
I start with the history (how it comes) and will end with what I know know and where I do not get any further currently:
Prophete #1:
5 years old from O2 germany contract, G4 device (Rom versions to be posted on request, device is at home...). Was broken twice (no booting any more) during warranty and the got wet when I was hiking only with a shirt in a thunderstorm. No warranty of course, but device dead ;-( And nobody would repair it - not even for money. Pissed off from O2, but whatever...
So I found here somewhere the Maintenance Manual and disassembled the thing, dried everything and had to buy a new battery and since then it more or less works fine. The battery I was able to re-animate by charging with Laboratory power supply - The Prophete seems to go dead below a certain voltage and does not even try to charge the batt any more...
For a while I had strange illumination effects - screen fixed very bright with one half even brighter and bad color contrast - possible to work, but ugly. This disappeared slowly after 2 more years...
Then I had this well-known dead speaker-thing (dirt in headset socket) - also long time ago repaired.
But now (over the last 2 years, increasing lately a lot) I have this strange scratching noise on the main speaker. It was supposed to be a bad speaker why I bought on ebay a defective second Prophete (to be discussed below) and switched speakers - booth are fine in #2 but scratching in #1. The trick with some cardboard under the speaker cover also does not work reliably and not at all in last months.
What I found last time I took the device apart is: when I leave a finger nail thick gap between the front cover and the housing frame in the lower half of the device, then everything is fine. But that is unsatisfactory to work with a semi-disassambled phone!
I guess, it has to do with some hair-break in a connection on the mainboard or something with the contacts between the different boards (spring contacts for grounding?) or with the headphone socket.
DOES ANYONE HAVE EXPERIENCE WITH THAT SCRATCHING NOISE and can help? Where should I search?
Device #2:
Bought 1 year ago as broken. Has a crack in the touch screen, but the screen responds fine and precise all the way down to < 1mm from the crack. After cleaning the screen and the front cover, the device started to work again (touch was inop. when I got the thing).
WLAN is dead. BT seems to work.
GSM did work fine. So the device got my wifes new mobile phone. And after 3 months it started to refuse contact to any GSM network.
If I search for networks, it lists all the providers around in germany, but when I have it connect to one, it times out. So I think the Radio (GSM) system is still working (at least receiving network names, tuning right frequencies etc.), but not correctly.
I did reflash the radio ROM, but no success so far.
Sometimes after cold boot, the telephone app in general and the settings specifically are very irresponsive (long answer time, complete WM crash, whjatever). Thus I consider reflashing the entire device.
Q:
- what are good radio and WM(best: 6.1 GER) ROMs to try? (No flashing experience so far)
- what are typical GSM and WLAN failure mechanisms of the Prophetes (bad solder points, bad spring contacts etc.) - i.e. where to look?
I could even consider a "make 1 good out of 2 broke" - action - but I am afraid, that booth devices have a somehow mainboard-located problem.
Thanks for any helpful comments!
Torsten

thats easy men...just take out the LCD from prophet 1, and also Put to Prophet 2.
search in youtube for prophet disassembling...take care
ps: check The LCD Code (some prophet make different LCD)

Phew, My Shift is Back to Life: Thank God !

After frying my Shift motherboard sometimes last year I had given up any hope of ever getting it to work again. ( http://forum.xda-developers.com/showthread.php?t=701950 ). I tried HTC support to have the motherboard repaired or even to be supplied with a new motherboard without any success. Tried any relevant outlet I could think of that could source a motherboard but still nothing came of it.
I tried searching for anyone selling a Shift at the cheap but the few ebay listings I came across showed that the device cost is still very high. I started a link here hoping somebody with a dead Shift could sell it to me for spares but nothing came of it. To make matters worse the thread was moved to Xda Marketplace and it was lost and burried in the market. ( http://forum.xda-developers.com/showthread.php?t=937322&highlight=shift+motherboard )
But as fate would have it the other day I searched the Marketplace and came across a guy who was selling 2 dead Shifts and high capacity Shift accesories and spares including 2 Gb Ram stick, SSD and higher capacity batteries. But I was a bit late to the party! The sale had been on for almost 2 months and most of the valuable items had already been sold. But I was still in luck as the dead Shifts were still available. I bought one of them as the other was a complete shell even though the motherboards had problem as the power switches had detached and gotten lost for the both of them.
Fortunately an electrical engineer friend of mine was able to remove the power switch from my dead Shift and solder it to the purchased motherboard. It was a delicate procedure but I can confirm that all went well and my Shift is now back to life. Infact even with the replacement motherboard my Shift booted with all the data and settings exactly the way it was before roasting the motherboard.
Just thought of sharing my experience with fellow proud Shift owners here.
I would also wish to thank the seller (TopRowGuy) for a very swift and smooth transaction. Thumbs up buddy. ( http://forum.xda-developers.com/showthread.php?t=961663&highlight=shift+clio )
Regards, Ed

Hi Ed, congratulations for resurrecting your Shift and thank you for posting here the info.
While having the spare Shift and old motherboard at the hand, would you please be so kind to have a look at the circuitry of the socket for external headphones&microphone. My interest is related to the non-working condition of the Shift phone on external headphones&microphone with the custom ROMs.
Therefore could you please check if the socket is simply switching mechanically between internal speakers and external headphones, respectively internal microphone and external microphone (just like in any other audio-tape device) or other circuitry is also involved invalidating the phone function when external devices connected. What else gets disconnected when plugging-in that is influencing the phone? Can the microphone switch be overridden to use only the internal one permanently and let only the headphones be switched?
I'm pretty sure that there are many members here interested in your answers to the above questions. So thank you for contributing to this community!

axelTP2 said:
Hi Ed, congratulations for resurrecting your Shift and thank you for posting here the info.
While having the spare Shift and old motherboard at the hand, would you please be so kind to have a look at the circuitry of the socket for external headphones&microphone. My interest is related to the non-working condition of the Shift phone on external headphones&microphone with the custom ROMs.
Therefore could you please check if the socket is simply switching mechanically between internal speakers and external headphones, respectively internal microphone and external microphone (just like in any other audio-tape device) or other circuitry is also involved invalidating the phone function when external devices connected. What else gets disconnected when plugging-in that is influencing the phone? Can the microphone switch be overridden to use only the internal one permanently and let only the headphones be switched?
I'm pretty sure that there are many members here interested in your answers to the above questions. So thank you for contributing to this community!
Click to expand...
Click to collapse
Thank you Axel.
Ok I will check the switching mechanism for the mic+headphones for the Shift and report back. If relevant I will also take close-up photos with both the the jack plugged in and plugged out. Since I have the extra motherboards boards (both winmo and Vista) I will try severall things. But if i am not wrong the headphone jack is actually attached to the windows mobile motherboard and not the windows vista motherboard....
I will do the necessary and report back. Of course I am also very much interested in finding a solution for the century old problem of non-working external mic phone side..... I will also snoop around the Memory Card Reader and see what gives ......

Thanks Ed!
My idea is that we all might get lucky if the phone would work on external headphones (i.e. have some privacy), but with the internal microphone (you have to speak-up loud anyway).
I expect that, just like in any classical audio set, the switching circuitry on the audio out side gets the signal out of an audio stereo IC, which is led further to the ext phones socket and involves nothing more than the connection wires, socket, loudspeakers and earphones. If so, that means that we are OK on the earphones side. Of course this is an assumption and means that there are no active speakers or anything of the kind linking the audio outputy to any input of the mciroprocessor.
I also looked at 4 contacts 3.15mm coax plug of the HTC earphones and microphone and the contacts for the limitation comes from the microphone circuitry, this can be arranged by disconnecting the internal microphone from the ext socket and leaving it connected all the time.
My guess is that the internal microphone is hardwired directly to the socket and is not going trough the motherboard PCB (printed circuit board), in which case can be desoldered from the socket and resoldered to the audio in signal path (also coming from the socket). With this mod inserting the plug will have no influence any more on the microphone path.
In reality things can be more complicated since the same ext socket is serving both WinMob side and Vista side. I wonder if there is a single audio out IC or just the two processors deliver in paralel to the same load (speakers).
Looking forward to your findings.

Axel,
I had a long and hard look at the mic and audio jack/port and I am afraid there is nothing much to gain from a physical examinations of those items. To start with the audio port is covered with a black plastic on the outside so you cant really see what is going on inside when you insert the jack.
The audio port is connected to the phone mobo and not the Vista mobo. The phone motherboard is not spoilt and hence I would not want to strip things from it as it can come in handy at a future date. The internal mic is also attached to the phone motherboard through a printed cable. Problem is without first booting the Vista Bios the phone side does also not boot. I am trying to see if there is a way I might get the phone side to boot. If I can succeed that way I would then disconnect the mic from the phone motherboard and see whether the wired mic can become active as you have suggested.
But all this I am only doing with the dead Shift because of course I cant touch the recently resurrected Shift. I wonder if there is absolutely any way of being able to boot the winmo side without first pressing the power button (attached to Vista mobo) which is missing from the motherboard that I am playing with??? If that was to be possible I could try various things with the mobile powered on and probably even be able to use the mobile side ad forget about Vista on the cannibalized Shift?
Here are some photos of the audio jack port and the mic connection area. Sorry the images are not great as i took them at night and in low light environment.... These are self-explanatory but the long and short of it as per your inquiry is that it is possible to disconnect the internal mic from the motherboard. As to how the wired mic would behave when the internal mic is disconnected is subject to real tests with a working Shift. As to whether you can solder these around I will leave that to those of us who are more technically oriented.......

PlayStation said:
After frying my Shift motherboard sometimes last year I had given up any hope of ever getting it to work again. ( http://forum.xda-developers.com/showthread.php?t=701950 ). I tried HTC support to have the motherboard repaired or even to be supplied with a new motherboard without any success. Tried any relevant outlet I could think of that could source a motherboard but still nothing came of it.
I tried searching for anyone selling a Shift at the cheap but the few ebay listings I came across showed that the device cost is still very high. I started a link here hoping somebody with a dead Shift could sell it to me for spares but nothing came of it. To make matters worse the thread was moved to Xda Marketplace and it was lost and burried in the market. ( http://forum.xda-developers.com/showthread.php?t=937322&highlight=shift+motherboard )
But as fate would have it the other day I searched the Marketplace and came across a guy who was selling 2 dead Shifts and high capacity Shift accesories and spares including 2 Gb Ram stick, SSD and higher capacity batteries. But I was a bit late to the party! The sale had been on for almost 2 months and most of the valuable items had already been sold. But I was still in luck as the dead Shifts were still available. I bought one of them as the other was a complete shell even though the motherboards had problem as the power switches had detached and gotten lost for the both of them.
Fortunately an electrical engineer friend of mine was able to remove the power switch from my dead Shift and solder it to the purchased motherboard. It was a delicate procedure but I can confirm that all went well and my Shift is now back to life. Infact even with the replacement motherboard my Shift booted with all the data and settings exactly the way it was before roasting the motherboard.
Just thought of sharing my experience with fellow proud Shift owners here.
I would also wish to thank the seller (TopRowGuy) for a very swift and smooth transaction. Thumbs up buddy. ( http://forum.xda-developers.com/showthread.php?t=961663&highlight=shift+clio )
Regards, Ed
Click to expand...
Click to collapse
Hi Ed
I'd read your post. Also, I have som problem about my Shift
the conditions are:
1. it can not be turn on even vista or snapvue
2. When I switch on the power button, only the green light was on at the bottom of LCD screen.
3. I can hear the fan turn on but nothing happened
4. When I use the charger, the battery can be charged and finished it.
Do you think that the mother board have something wrong?
The HTC care center want me to change the board but it cost a lots.
Regards,
Vincent

wangwun said:
Hi Ed
I'd read your post. Also, I have som problem about my Shift
the conditions are:
1. it can not be turn on even vista or snapvue
2. When I switch on the power button, only the green light was on at the bottom of LCD screen.
3. I can hear the fan turn on but nothing happened
4. When I use the charger, the battery can be charged and finished it.
Do you think that the mother board have something wrong?
The HTC care center want me to change the board but it cost a lots.
Regards,
Vincent
Click to expand...
Click to collapse
If the green light is turning on I think yours is a software problem. What about the mobile side? Does it come on when you press the button for switching between the Snapvue and Vista? Try that with the green light on and then we can try troubleshooting from there.....
In the meantime try press FN+F10 immediately the green light comes on and see what happens.....

PlayStation said:
But all this I am only doing with the dead Shift because of course I cant touch the recently resurrected Shift. I wonder if there is absolutely any way of being able to boot the winmo side without first pressing the power button (attached to Vista mobo) which is missing from the motherboard that I am playing with??? If that was to be possible I could try various things with the mobile powered on and probably even be able to use the mobile side ad forget about Vista on the cannibalized Shift?
Click to expand...
Click to collapse
Hi Ed, thank you very much for your endeavour. Of course I didn't expect to work in this experiment with the ressurected Shift, but only with the spare one.
What kind of a switch is the power switch, is it a single section switch or with multiple sections, is it a bistable or a tip-switch. I expect that it is a single section tip switch which is connecting 2 contacts on the pcb only for a short while while you press on it. If this is correct you may connect the 2 contacts with a jumper-wire just to start-up the Shift. It is true that the Vista part will start first, but I don't see a big draw back in that.
PlayStation said:
Here are some photos of the audio jack port and the mic connection area. Sorry the images are not great as i took them at night and in low light environment.... These are self-explanatory but the long and short of it as per your inquiry is that it is possible to disconnect the internal mic from the motherboard. As to how the wired mic would behave when the internal mic is disconnected is subject to real tests with a working Shift. As to whether you can solder these around I will leave that to those of us who are more technically oriented.......
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Thanks again for the pictures, maybe some other time you'll have the opportunity to come up with more clear ones.
To get some privacy while using the phone my intention was to switch only the speakers on the headphones, but still using the internal microphone of the Shift. That would require some small modifications to the jack-port.
I didn't get it exactly how many motherboards are there inside the Shift? Are there in 3 pcs, i.e. Vista mb, Winmo mb and phone mb, is that right?

Hi Axel,
The Shift has 2 motherboards - Mobile and Windows Vista. But both are connected where the 2 boards get into contact with each other through connectors on each side. There are no cables/wires involved but just direct connectors between the 2 motherboards where they come into contact with each other.
Apparently most of the connections take place inside the printed circuit boards so you cant tell which connection goes where. But of interest is that both the mic and the audio jack are all connected to the phone motherboard yet they dont work in the mobile side. So either these have been physically disconnected within the circuit board or it could be a software issue. Remember how we could not use GPS or phone functions until the great rom breakthrough by the likes of Thaihugo and Cmonex....? I still believe that the issue of wired mic not being active is a software issue.
But the SD Card is a different story as this is attached to the Vista motherboard. It is very likely that there is no physical connection between the Sd card and the mobile motherboard. Well I might be entirely wrong here as come to think of it there is a solution about accessing SD card from the windows side but Vista has to be on...... Will look for that thread and read some more and see how the connection is established.
By the way I did home-made switch for the dead shift's motherboard. The Shift was able to power up and boot but it appears that the Lcd cable is dead (or perhaps the lcd screen itself is dead but most likely the problem is with the cable). I was able to connect the Shift to the Tv through a Vga cable. But I could not do much with it as the Vista software appears to be corrupt. Further the HDD connection cable too is not in very good shape. I hope to get the Hdd cable to be able to do more tests on this Shift using the Tv as the external monitor.
This other Shift will be the official guinea pig and I am willing to make various tests with it as soon as I get a working Hdd cable and re-install windows. However there is a big limitation to this too because apparently the windows mobile side does not show in the external monitor. In other words even if you switch to the mobile side using the Shift button the external screen does not change and is only active for Vista......
But I can tell the snapvue side is active as I was able to call the sim card number inside the Shift I was using for tests.... My intention is simply to use this Shift with my Tv for internet connection and as a basic pc in the living room. I confirmed that the internet connection to the Vista side is active even without having any access to the windows mobile screen. I made these tests with the Hdd cable from my good Shift for a few minutes and thus did not make extensive tests.
So guys I will get back to you with more tests once I get a working Hdd cable which I may have to import from China (parts4repair.com). I might then end up with 1 Shift and half a Shift......

wangwun said:
Hi Ed
I'd read your post. Also, I have som problem about my Shift
the conditions are:
1. it can not be turn on even vista or snapvue
2. When I switch on the power button, only the green light was on at the bottom of LCD screen.
3. I can hear the fan turn on but nothing happened
4. When I use the charger, the battery can be charged and finished it.
Do you think that the mother board have something wrong?
The HTC care center want me to change the board but it cost a lots.
Regards,
Vincent
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After playing with my other Shift as described above I believe your problem is not the motherboard since the power light is coming on and the fan is coming on when you power your device. So chances are that your Lcd screen is not getting any signal from your Shift. Yours could be a simple problem with a disconnected Lcd flex cable or problems with the lcd screen or damaged lcd flex cable. Easiest test for you is to get Vga cable and test your Shift using an external computer monitor or tv that supports Vga in cable..... Hope this helps.

Thanks PlayStation, great post, thank you for your endeavour!!! Looking forward for further details.