Hello, I need your help.
I send my car to repaired, and when I received the car the radio was broken.
They said that turning on the battery they turned the polarity, and I opened the radio and had a burned component.
Needed to identify the component that is missing in L1.
Can someone confirm by an equal radio please?
Or someone know where I can get the scheme of this radio?
Thanks for all the help you can give me.
No input protection on these? hehe. Guess we shouldn't expect that much, a whole diode is way too expensive to put in. lol.
L designates an inductor, so you have to find the value and then you should be good to go. Hopefully nothing else is fried...
Hilari0 said:
No input protection on these? hehe. Guess we shouldn't expect that much, a whole diode is way too expensive to put in. lol.
L designates an inductor, so you have to find the value and then you should be good to go. Hopefully nothing else is fried...
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Click to collapse
Yes, if I can repair it, I'll put two diodes in the entrance, one in (+) and one in (-), so I will not have any surprises.
It's what I expect, someone who has a radio equal to be able to know the value.
And thanks you for your opinion.
Unfortunately, I don't have the same unit. If you can figure out what that inductor does in the circuit, it should be possible to calculate the correct value of it. Likely very small, judging by the apparent size
Okay, I'll try to track the 12V supply of the radio and then I'll ask you for help for the calculation.
Related
Hello, i have broken HERM100, would like to fix it if it fixable, it doesint respond in any key presses, dosent make any sound, any leds ar lit. Just turned off once and didnt turned on agen. i thought it batery or charger problem, but after left it all day on charge batery was charged now i mesured it's shows over 4 volts. So what can i do? i dont wan to throw it away, maby i could fix it?
Sounds like blown fuse. Though its possible to fix, unless you know how to do surface mount soldering you can just about forget it. You might also find someone who can fix but this may be expensive.
As the Hermes is getting a little dated, might be a better idea to put the money into an upgraded model... Don't forget though, if there was no other problems you might get something for the old Hermes on ebay selling as spare parts...
Cheers...
broken fuse, interesting. where it is located ?
Hermes Fuse Location.pdf
Mike
mikechannon said:
Hermes Fuse Location.pdf
Mike
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Thank you, i'll check it tomorow. and let to know.
hello, i just wan't to say that you was right, i dissasembled phone and found brouken that fuse, i left board board to competetive person to swap fuse from USB port charger connection with that broken for testing. and why the hell that fuse was broken ? is there something else i could check?
n0one said:
hello, i just wan't to say that you was right, i dissasembled phone and found brouken that fuse, i left board board to competetive person to swap fuse from USB port charger connection with that broken for testing. and why the hell that fuse was broken ? is there something else i could check?
Click to expand...
Click to collapse
Not really anything to check. I notice the most common thing that's true when the fuse blows is that the charger is connected. Likely then that it's caused by power fluctuations (not unlikely given the relatively crude nature of chargers) or issues related to the charging circuit. Chances are though that replacing the fuse will be all that is needed.
Mike
you was right. after changing fuse device powered up thank you for suggestions. this device have hard spl and modified ROM, keyboard doesnt lit. is this firmware isue or somhere is other blowed fuse ?
I was hoping someone might be able to give me an idea if my idea would be possible. Basically, I want to take this Case and this Qi Reciever and be able to use them together.
The question I have is this: I see the case has 2 contacts that obviously match up with the phone. Could I use a piece of copper to make both the case and receiver make contact with the points on the phone? Or would this render either the Qi Charging or case to not function?
Thanks in advance!
toonhead85
toonhead85 said:
I was hoping someone might be able to give me an idea if my idea would be possible. Basically, I want to take this Case and this Qi Reciever and be able to use them together.
The question I have is this: I see the case has 2 contacts that obviously match up with the phone. Could I use a piece of copper to make both the case and receiver make contact with the points on the phone? Or would this render either the Qi Charging or case to not function?
Thanks in advance!
toonhead85
Click to expand...
Click to collapse
You can better ask your question here : http://forum.xda-developers.com/showthread.php?t=2438168
I installed Joying android headunit(RK3188 1024*600) myself. and it was working great.
I also wired reverse camera and steering wheel remote. that was all fine.
but today, when I shift to reverse gear, the headunit display going off and never return without reset button.
Same phenomenon appeared with ILLUMINATE function.
when I turn on the light, display going off.
but headunit was still working. it plays music.
Any solution of this problem?
Sorry for my bad english. Thanks
leeehn said:
I installed Joying android headunit(RK3188 1024*600) myself. and it was working great.
I also wired reverse camera and steering wheel remote. that was all fine.
but today, when I shift to reverse gear, the headunit display going off and never return without reset button.
Same phenomenon appeared with ILLUMINATE function.
when I turn on the light, display going off.
but headunit was still working. it plays music.
Any solution of this problem?
Sorry for my bad english. Thanks
Click to expand...
Click to collapse
How long it worked fine? If ever?
If it worked and now don't, it looks like something got busted in MCU electronics.
I read on net that line from reverse line ght, which activates camera, may introduce overload on some components in MCU. Can't find link right now, but guy was complaining that his camera connector gets hot from prolonged use indicating huge current passing. And as camera is on-chip and cannot get so large current (even with poorest Chinese design there is nothing more than chip inside so there is no possibility of current drain) the current has to flow into MCU side. So I was concerned by that and decided to rethink about that setup. I plan to measure current to MCU and eve to put 1A fuse on reverse light line (that powers camera and goes back to MCU) so I protect both NCU and car from overheating / overload.
Check your setup. Measure reversing current to MCU. If not us high then something is wrong in your MCU. May be just poor / ghost contact (crossover to ground / chassis as I noticed sloppy soldering all around).
pa.ko said:
How long it worked fine? If ever?
If it worked and now don't, it looks like something got busted in MCU electronics.
I read on net that line from reverse line ght, which activates camera, may introduce overload on some components in MCU. Can't find link right now, but guy was complaining that his camera connector gets hot from prolonged use indicating huge current passing. And as camera is on-chip and cannot get so large current (even with poorest Chinese design there is nothing more than chip inside so there is no possibility of current drain) the current has to flow into MCU side. So I was concerned by that and decided to rethink about that setup. I plan to measure current to MCU and eve to put 1A fuse on reverse light line (that powers camera and goes back to MCU) so I protect both NCU and car from overheating / overload.
Check your setup. Measure reversing current to MCU. If not us high then something is wrong in your MCU. May be just poor / ghost contact (crossover to ground / chassis as I noticed sloppy soldering all around).
Click to expand...
Click to collapse
Thanks for your reply. My headunit has worked about 2 weeks. I will check my current of my reverse signal wire.
If current is high(how much criteria for high current?), I will make a circuit to avoid high current using relay.
Anyway, I broke up my headunit. I wish the seller give me a A/S. Thanks again.
I recorded my headunit.
youtu.be/TQIahfupdE8
leeehn said:
Thanks for your reply. My headunit has worked about 2 weeks. I will check my current of my reverse signal wire.
If current is high(how much criteria for high current?), I will make a circuit to avoid high current using relay.
Anyway, I broke up my headunit. I wish the seller give me a A/S. Thanks again.
I recorded my headunit.
youtu.be/TQIahfupdE8
Click to expand...
Click to collapse
I will assume that anything above 10mA is high for reverse current (in fact, if it is properly done it should be almost 0!). Relay will not solve the problem - it will just redirect current not from reverse light but from other source. You have to use current regulation... But then it is question if it will work at all...
Yes, first you have to fix the unit. Then try to check connectors and wiring inside unit for any wrong contacts that may leak current. That is, probably if not catastrophic Chinese design by itself, the most probable cause of current leakage. An if leaks somewhere not directly to the ground, then it is overloading some circuitry...
pa.ko said:
I will assume that anything above 10mA is high for reverse current (in fact, if it is properly done it should be almost 0!). Relay will not solve the problem - it will just redirect current not from reverse light but from other source. You have to use current regulation... But then it is question if it will work at all...
Yes, first you have to fix the unit. Then try to check connectors and wiring inside unit for any wrong contacts that may leak current. That is, probably if not catastrophic Chinese design by itself, the most probable cause of current leakage. An if leaks somewhere not directly to the ground, then it is overloading some circuitry...
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Click to collapse
I found a cause. The XposedMTC made problem.
When I turn on dimming feature with screen filter and I get a problem.
So I didn't install XposedMTC application and no more display issue.
Thanks for helping me!
leeehn said:
I found a cause. The XposedMTC made problem.
When I turn on dimming feature with screen filter and I get a problem.
So I didn't install XposedMTC application and no more display issue.
Thanks for helping me!
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Click to collapse
Great! I'm happy it is not a HW issue for you! Also, thank you for update.
BTW I also had a problem with XposedMTC module. After your confirmation of the issue, I will definitely disable it for good!
Hello,
Same issue here with my huifei , but even with xposed disabled still have the reverse gear to switch off the display
Regards
eexray
eexray said:
Hello,
Same issue here with my huifei , but even with xposed disabled still have the reverse gear to switch off the display
Regards
eexray
Click to expand...
Click to collapse
I performed full wipe of my headunit and re-install rom on a recovery mode.
Maybe you cannot see anything in recovery mode but you can enter the mode and assume the cursor.
leeehn said:
I performed full wipe of my headunit and re-install rom on a recovery mode.
Maybe you cannot see anything in recovery mode but you can enter the mode and assume the cursor.
Click to expand...
Click to collapse
In fact When I try to put the unit in recovery mode my screen is off, after a minute or so it shows the logo ( Audi) and the unit starts.
Tried to install A rom from rockchip batch toll but even installing rom I still have the same issues. No recovery on the screen, and the issue with the reverse gear
Assuming that even with no screen I can go to recovey, 'will try to full wipe. Must check the steps to do it with no screen.
Many thanks
eexray
eexray said:
In fact When I try to put the unit in recovery mode my screen is off, after a minute or so it shows the logo ( Audi) and the unit starts.
Tried to install A rom from rockchip batch toll but even installing rom I still have the same issues. No recovery on the screen, and the issue with the reverse gear
Assuming that even with no screen I can go to recovey, 'will try to full wipe. Must check the steps to do it with no screen.
Many thanks
eexray
Click to expand...
Click to collapse
Got the same problem and I'm almost sure it has to do with XposedMTC. Maybe it hasn't been uninstalled correctly. Have you been able to reset in recovery mode without the screen? Also when I try so get into recovery, my hard buttons blink white
So, I have had issues with loading my phone. I changed the daughterboard to fix the issue.
Now I have a whole different issue, the mic volume is really low to the point where I almost have to shout to make myself heard.. Is there any way I can boost line in? I am guessing there is some option in mixer_path where I can do it, but where? I don´t want to change something before I am 100% sure about what it does..
Any one able to help me??
//Ceder
Ceder78 said:
So, I have had issues with loading my phone. I changed the daughterboard to fix the issue.
Now I have a whole different issue, the mic volume is really low to the point where I almost have to shout to make myself heard.. Is there any way I can boost line in? I am guessing there is some option in mixer_path where I can do it, but where? I don´t want to change something before I am 100% sure about what it does..
Any one able to help me??
//Ceder
Click to expand...
Click to collapse
Hmm... Wouldn't it be wiser to think about what happened rather than hacking your phone to make it work again? It used to work properly with the same hardware before. There's no reason it should change because you replaced a composant.
Except if maybe:
1 - the new composant is faulty.
2 - the new composant is crap and damaged your existing hardware.
3 - you damaged a wire/harness rebuilding your phone.
Just trying to eliminate all possibilities... Charge your phone fully since the old Port is dead. Open your device and replace the daughter board with your old one again and test the mic. Hopefully you won't have to modify system files and get your device back up and running!
Good luck... :good:
5.1 said:
Hmm... Wouldn't it be wiser to think about what happened rather than hacking your phone to make it work again? It used to work properly with the same hardware before. There's no reason it should change because you replaced a composant.
Except if maybe:
1 - the new composant is faulty.
2 - the new composant is crap and damaged your existing hardware.
3 - you damaged a wire/harness rebuilding your phone.
Just trying to eliminate all possibilities... Charge your phone fully since the old Port is dead. Open your device and replace the daughter board with your old one again and test the mic. Hopefully you won't have to modify system files and get your device back up and running!
Good luck... :good:
Click to expand...
Click to collapse
Well, the microphone is located on the same daughterboard. Sure, the new one seems to be faulty to some point. I only found out after some days that the mic was on the same board so the old one as it had a faulty charge port got tossed sadly.
Now I am stuck with a working chargerport but with a very low mic line in so I am trying to work something out besides tossing the whole phone. So as I said, anyone know of any way to boost line in by editing the mixer_path file?
Edit: Hope you don´t see me as rude 5.1 but I have sadly no other options then to edit or hack my phone, thx for your comments thou :good:
Ceder78 said:
Well, the microphone is located on the same daughterboard. Sure, the new one seems to be faulty to some point. I only found out after some days that the mic was on the same board so the old one as it had a faulty charge port got tossed sadly.
Now I am stuck with a working chargerport but with a very low mic line in so I am trying to work something out besides tossing the whole phone. So as I said, anyone know of any way to boost line in by editing the mixer_path file?
Edit: Hope you don´t see me as rude 5.1 but I have sadly no other options then to edit or hack my phone, thx for your comments thou :good:
Click to expand...
Click to collapse
Hello... Not rude at all...
I'm not an electronic engineer, but you know amplifying the signal to the point your mic works as intended could maybe damage other parts of the phone as it is not designed to work this way. Again I'm not sure it's the case...
Good luck..!
I have a OnePlus 5 with broken usb-mic connector on the motherboard (FPC). I'd like to restore the charging functionality and, at best, also the usb (data + data -) line. There is a schematic for the FPC pin assignment? There are other place on the board where I can find 5v,gnd,data+,data- line (maybe a jtag or a service hole/plate)?
I also have a spare connector but there's not enough space to re-solder and some plates are gone with the broken connector, so I'd like to find an alternative way.
Thanks
fraschized said:
I have a OnePlus 5 with broken usb-mic connector on the motherboard (FPC). I'd like to restore the charging functionality and, at best, also the usb (data + data -) line. There is a schematic for the FPC pin assignment? There are other place on the board where I can find 5v,gnd,data+,data- line (maybe a jtag or a service hole/plate)?
I also have a spare connector but there's not enough space to re-solder and some plates are gone with the broken connector, so I'd like to find an alternative way.
Thanks
Click to expand...
Click to collapse
Honestly, resoldering would not help, and since are pretty much left with no alternative but burn chunks of money, I don't know what you expect from here?
vdbhb59 said:
Honestly, resoldering would not help, and since are pretty much left with no alternative but burn chunks of money, I don't know what you expect from here?
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I can't understand what You're talking about.
The question (I suppose in the correct section) was easy: There are pins or plates (except the fpc connector) on the OnePlus 5 Board to power it?
For the pourpose I have in mind (a Tasker bridge device) the solder solution would be great, if possible. Seems strange that in the whole board there's not an alternative +5v and a GND to power it. But, after a week and with only Your (non contributing) answer I think I have to get the circuit tester and route some points myself.
I'd rather prefer no answers If the only one I get is about the circumstances and not about the point.
Thanks anyway
fraschized said:
I can't understand what You're talking about.
The question (I suppose in the correct section) was easy: There are pins or plates (except the fpc connector) on the OnePlus 5 Board to power it?
For the pourpose I have in mind (a Tasker bridge device) the solder solution would be great, if possible. Seems strange that in the whole board there's not an alternative +5v and a GND to power it. But, after a week and with only Your (non contributing) answer I think I have to get the circuit tester and route some points myself.
I'd rather prefer no answers If the only one I get is about the circumstances and not about the point.
Thanks anyway
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Click to collapse
Sorry to say if you see it that way. I know what I wrote was correct, and I was just resonating your point that there is no way out. Not sure if you seem to have seen it differently and rather why??
vdbhb59 said:
Sorry to say if you see it that way. I know what I wrote was correct, and I was just resonating your point that there is no way out. Not sure if you seem to have seen it differently and rather why??
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Click to collapse
There's always a way out, maybe it could be difficult or expensive, that's not the point. We're talking about a connector, not a more complex component.
Banally, the first way is by following the 5v from usb cable to fcp connector, (as described in a youtube video about OP5T) and check if that plate is still there, then, if not, if there is another point of the same line or a scratchable spot.
The question was about existent schematics and/or other people experience about this or similiar. Things that can make everything easier or confirmed.
So:
- The "repair" is achievable? Absolutely Yes if the fpc plate is not damaged (by making a bridge); probably Yes if damaged.
- The "repair" makes sense? Yes, for my purposes
I can't see Your point and Your statement, as I already know there's a way (that I've asked to be confirmed or already experienced) .