Anyone have a source for a NEW dPad circuit board? Checked around on eBay and haven't had success. Also tried Cnn.cn and their website doesn't have them listed - at least under Hermes HTC. Phone have problems with the front keyboard and I'm starting to get whitescreens - especially when the phone is left in the car - with a little heat/sun. Dpad is erratic. Can use up key fine but as soon as I press the down key it will stop working. Most of the time moving the scroll wheel will "fix" the problem for a while but the down directional key is doing something. Have opened the case and tightened the connector screws but I think either the flex of the circuit board is going bad.
Related
I don't understand it, the 8525 I have has a blank white screen. I thought the ribbon cable was bad so I ordered a new one, cost me $50, put it in, still the same problem. The motherboard itself is fine, I swapped it into another 8525 and it works with no problems, I swapped a different board into my 8525, and it has the same problem, blank white screen. I checked the LCD and everything, but I don't freakin understand it!! Anyone know what the heck is going on? It's annoying the crap out of me because I can't find the source of the problem.
Have you tried to swap the D-pad controller between those two devices?
shmilson said:
Have you tried to swap the D-pad controller between those two devices?
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Click to collapse
Nope, haven't tried that....but I completely removed the dpad controller and still had the same problem.
Oh and the dpad IS working because I was able to hard reset the device even though I can't see anything....
Is you're void sticker gone? If not I'd say get AT&T to replace it, that's what I did when I had that problem.
Check our USB port and see if it's shorting anything? That's what happened to me. I go the white screen every I plugged in anything into the USB port.
Dpad
After loosing some screws, the problem got better, but still I have some white screens here and there. The d-pad works intermittently. When on a whitescreen, turning the device of, holding the middle D-pad key (or up together sometimes) and turning it on brings back the screen. That's why I'm suspicious about the d-pad controller. In the meantime I'm waiting for a replacement from cnn.cn and will post my results.
shmilson said:
After loosing some screws, the problem got better, but still I have some white screens here and there. The d-pad works intermittently. When on a whitescreen, turning the device of, holding the middle D-pad key (or up together sometimes) and turning it on brings back the screen. That's why I'm suspicious about the d-pad controller. In the meantime I'm waiting for a replacement from cnn.cn and will post my results.
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Click to collapse
I notice that the service manual makes a specific point of noting the d-pad connector must be inserted precisely and with no angle. It is a very small connector and has two tiny screws. It does seem this connection is delicate and might become loose if keys on the d-pad are firmly pressed.
Mike
mikechannon said:
I notice that the service manual makes a specific point of noting the d-pad connector must be inserted precisely and with no angle. It is a very small connector and has two tiny screws. It does seem this connection is delicate and might become loose if keys on the d-pad are firmly pressed.
Mike
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Click to collapse
I did notice it too. After a lot of tries, I got to the optimum on my phone (after the whitescreens started -- probably from a fall), giving a slight torque to the screws but not too much. It's much better then before, but still.. The d-pad pressing actually "fixes" the problem, so I guess that the controller is bad or when I apply some pressure I "fix" this. It's completely random and may be related to temperature (after taking battery out for a long time, problem tends to be less often). In a few days when my controller arrives I'll make sure I screw the connector well and hoping for the best.
When I look at the xilinx(if I remember it right) fpga circuit closely there is a small gap between 2 corners and circuit board. It might be the case that the solderballs under the chip arent soldered that well and when you use D-pad the circuit board bends a bit and in a time the bad solderballs loose connection. The bad thing is that you cant check the solderballs at home (it requires x-ray inspection if you want to keep it in one piece).
FIXED IT!
I fixed it! Well, it's a bit soon to tell it'll keep like that, but after ordering a new d-pad controller from cnn.cn, and taking extra care on installing it as the technical manual says (keeping 90 degrees angle on connection to keyboard), everything is back! No more whitescreens (let's hope it stays that way), ALL buttons are back!
The "a" on my keyboard was getting flakey. It took a couple times of hitting it to work, and I was really getting annoyed. Also after almost 2 years of using this HTC (Branded the 8125) by Cingular, I was itching to disassemble it.
I could not find any information on repairing the keyboard/key cleaning.
There is a manual for this in the ftp space should anyone need. It is not specifically for the Wizard. You have to prise the lower housing off in a similar fashion. The rest of the disassembly is easy enough. Soon, you will have the 'middle' section of the phone in your hands, with only the keyboard and its flex connector attached.
Look carefully for screws, tabs, clips, anything that is holding the keyboard into the piece. You won't find one. Look even closer, and you still won't. I had my glasses off (contacts out) and focus at about 2" and still didn't see a damn thing holding the keyboard assembly into the part.
That is because there isn't anything.
I apologise for not taking pictures, it was together before I remembered. But here is the issue:
If you look at the bottom of the panel that holds the assembly, where the softkey buttons are, there are slots that allow you to see the layers of the keyboard. Using a very fine x-acto blade or knife, slide just under the black layer, and pry up. The keys and their laminated components are glued down to the flexible board that has the key contacts. The 'domed' part of the contacts is part of the key layer, and will be the bottom. A bit of cleaning and the contacts were again happy and shiny.
Make sure that when you put the key layer back down that it is centered properly. Make sure that the soft keys at the top are not bound, or they will stick up and catch the slider.
Oh, and the kicker? None of the other disassembly was needed, since there was nothing inside the phone to release the keyboard. But what the Hell, it needed a good cleaning anyway.
One more thing, the best place to do this is NOT in a hotel room with almost no tools. That makes it far more challenging.
Hi all, my Trinity's hardware buttons doesn't work.
The 2 softkey hardware buttons, the red and the green button, the ok button and the Start button seems to be broken also if they have backlight. All the others buttons are ok.
I've tried to softreset, hardreset and flash the ROM (I'm using last Ervius ROM). After flashing for the first time the buttons were ok for a littewhile but now they seems to be broken again even after several flash. I've also tried to downgrade to wm5 but nothing change. I think that is an hardware issue and I'm going to try to fix it by opening my Trinity hoping that is just a flat connector pluged out but if someone else has experienced the same problem and has to suggest me something is really welcome.
Campo said:
Hi all, my Trinity's hardware buttons doesn't work.
The 2 softkey hardware buttons, the red and the green button, the ok button and the Start button seems to be broken also if they have backlight. All the others buttons are ok.
I've tried to softreset, hardreset and flash the ROM (I'm using last Ervius ROM). After flashing for the first time the buttons were ok for a littewhile but now they seems to be broken again even after several flash. I've also tried to downgrade to wm5 but nothing change. I think that is an hardware issue and I'm going to try to fix it by opening my Trinity hoping that is just a flat connector pluged out but if someone else has experienced the same problem and has to suggest me something is really welcome.
Click to expand...
Click to collapse
I experienced this myself, and replaced this item:
http://cnn.cn/shop/p3600dopod-d810-keypad-p-1825.html
HPN
keys are stuck
Mine also, but solved it after a couple of days (temporarily). The hardware buttons problem seems to be related with one of the keys stuck. If one of those keys is stuck none of the others work. I tried "fast" double clicking on one key at a time to unstuck and it worked for me. Mine has been working for two weeks with no problem. Anyway I ordered that part "just in case".
So before opening your trinity try to unstuck the keys. It seems to be related with humidity conditions and carrying the phone in the pocket (just a guess).
hpn said:
I experienced this myself, and replaced this item:
http://cnn.cn/shop/p3600dopod-d810-keypad-p-1825.html
HPN
Click to expand...
Click to collapse
Thanks !
n0t said:
Mine also, but solved it after a couple of days (temporarily). The hardware buttons problem seems to be related with one of the keys stuck. If one of those keys is stuck none of the others work. I tried "fast" double clicking on one key at a time to unstuck and it worked for me. Mine has been working for two weeks with no problem. Anyway I ordered that part "just in case".
So before opening your trinity try to unstuck the keys. It seems to be related with humidity conditions and carrying the phone in the pocket (just a guess).
Click to expand...
Click to collapse
I'm going to try this becouse during the last 4 days sometimes the buttons work so.... thanks!
Ok, nothing work.
I've also tried to open the device but looking behind the buttons pad fortunally/unfortunally there isn't an evident hardware problem.
The only solution is to replace the pad.
Hi to all.
I have had buttons not working on my trinity for some time. was tempted to send it back for repair but i did not want to be without my phone and did not want to have to stick the old wm5 rom back on!!
I took my trinity apart too see if i could see anything wrong. and got it down to the keypad. one thing i did notice is that there was a lot of dust. also around the small disks that provide the buttons, there are 3 small holes in the sealing sheet. seems that the construction of the switch array is circuit board at the bottom, with small tin disks on top, all held in place with a thin plastic sheet.
The tin disks 'pop' inside out when you press the buttons, making the contact for the switch. On the old nokia phones, these disks got deformed and this would make the button work but with no click. I had a click but no button operation, and with the holes, and all the dust i found, i figured that it must be dusty contacts.
so here is how i managed to fix my buttons for free:
1, strip the phone to get to the keyboard circuit (i used this link clicky)
2, clean all the dust from the buttons
3, start to tease the plastic film from the front of the board (i used a sharp knife but mind your fingers and take care not to damage the board)
4, once one corner is up you should be able to slowly pull the film up (take care not to damage the disks as the plastic comes up but make sure the disks stay on the plastic sheet)
5, dont pull the sheet totally off otherwise you will have a job getting it all to line up after.
6, get some alcohol or head cleaning fluid on a cotton bud and clean all the gold contacts, as well as the insides of the discs.
7, slowly rub the plastic film to put it back where it came from, taking care to get the disks in the center of the gold contacts.
8, rebuild and test
All being well you should have working buttons again!!! It seems the design of the buttons lets dust inside the workings.
Hope this helps someone with clicking buttons but no action!!!
I've listed my Hermes - HTC branded version - on eBay. Originally put it up on Marketplace. Also listed a few parts that seem to be harder to find including a rear camera, dpad board from a 8525 and a keyboard sub board and antenna/speaker. Don't know if I should link to ebay but here goes:
Camera
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150395603571&ssPageName=STRK:MESELX:IT
Phone:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150395614424&ssPageName=STRK:MESELX:IT
Scroll Wheel/Flash
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150395616347&ssPageName=STRK:MESELX:IT
Speaker/Antenna Module
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150395617919&ssPageName=STRK:MESELX:IT
dPad/Front Keyboard PCB
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150395620644&ssPageName=STRK:MESELX:IT
All the parts were from a donor phone and work perfectly. The phone is in great physical condition and everything works perfectly as described - the front dPad gets a little flaky - generally works - sometimes won't but can start up again by moving scroll wheel. Can't use the existing part I'm selling because it doesn't match up. Apparently there are TWO version os the dpad one has the controller chip at the edge of the PCB (ATT/Cingular - DOPOD 838) and original HERMES has it more toward the center. The keypads are different. I also have the sliding keyboard PCB without the keys and a flex cable (BLACK) and keyboard FLEX. OH - have another rubber plug for the antenna as well.
If interested just PM me and I can either sell it through Ebay or take it down and do it privately.
Hi Guys,
so I noticed over time that a couple keys weren't working on my dream's keyboard sometimes, and it became progressively worse up to the point where said keys stopped working altogether. The Affected keys are: 1, 2, W, S, Z, Left ALT, Volume Up. If you have a look at your keyboard, you will notice they are in a line almost, which led me to think there was a problem on the Keyboard PCB, or it's ribbon connector to the Motherboard.
SO...I bought one of these Ebay PCB replacements: http://cgi.ebay.com/T-MOBILE-G1-HTC-DREAM-KEYBOARD-MEMBRANE-KEYPAD-PCB-FIX-/120690721519?pt=PDA_Accessories&hash=item1c19ba42ef and just fitted today but, and to my disappointment and dismay, the exact same keys still do not work
I have cleaned the internals using compressed air quite thoroughly and still not winning.
Any ideas as to what the real problem is here? Maybe its the motherboard itself?
THANKS!
I have a problem with my right alt and . Key as well, hope we can solve this
Sent from my Plain Biff Dream using XDA App
It is not particularly clear what that item is. Is it a complete keyboard? PCB? Just the rubber membrane?
The key is to CLEAN the thing. 99.9% of keyboard problems are because there is dirt somewhere. Rubbing alcohol and a mild abrasive (like a pink rubber pencil eraser) are very useful for cleaning.
Its everything you see in the picture, keyboard pcb (which has the actual buttons which are pressed when you press the plastic button above, and the volume buttons), with ribbon cables, metal part that sits behind the keyboard - (it is not a replacement for the buttons on the rubber strip which overlays the keyboards hardware)
I stripped the phone completely and replaced the entire keyboard pcb, and still the same issue... i don't understand how cleaning would have made a difference on a brand new item... where else do you recommend i clean?