Defy's Flashlight has dead.

[K r i ll e]

As I understand you no longer have any of the chinese base on your phone when restoring like that, nothing that can damage the LED anyway. So you're good

Sent from my Defy

 

[Step666]

...the problem with the chinese rom is, that it damages your phones hardware.

No, a handful of people think it might've. That's not the same.

Of the scores/hundreds/thousands(?) of Defy users on here who have flashed the Chinese Froyo ROM, 4 or 5 people in this thread seem to have had issues with the flash, hardly conclusive.
And at least one person has apparently been able to fix their LED by flashing back to a different ROM, which cannot possibly be the case if the LED had been blown due to too high a voltage.

 

[shady_lanem]

I flashed to every other possible roms i could think of but to no avail. My flash still remain very weak. It's not totally dead but near to useless to say the least

 

[reinsen]

No, a handful of people think it might've. That's not the same.

Of the scores/hundreds/thousands(?) of Defy users on here who have flashed the Chinese Froyo ROM, 4 or 5 people in this thread seem to have had issues with the flash, hardly conclusive.
And at least one person has apparently been able to fix their LED by flashing back to a different ROM, which cannot possibly be the case if the LED had been blown due to too high a voltage.

in the german android forum there were far more ppl with these kind of issues.
and ive not heard of users of other roms with this problem. doesnt look like a coincidence.
as we dont know of the complete constellation of this problem to occur, based on the knowledge we have, the chinese sbf is a factor to consider.

and that someone thinks to have solved a hardwareproblem with software... i guess its more likely that he never had the hardware issue to begin with. maybe another problem with similar symptomes.

 

[Step666]

and that someone thinks to have solved a hardwareproblem with software... i guess its more likely that he never had the hardware issue to begin with. maybe another problem with similar symptomes.

Well, that's kinda my point, it's not all that clear what the problem is or whether there are multiple similar problems.

 

[Darkcaptain]

I think the Chinese ROM is something problem, I put the ROM China and since then FlashLED burned, I've tried all available ROMs and all possible evidence and have not gotten anything ...

And so I have more than 1 month...

Sorry for my english.

 

[reinsen]

as i said. there might be different causes for the LED to get damaged but the china rom seems to be a factor in every case.

 

[rznag]

On the german forum there are even less people with this problem. They all reference to xda. But the hype about this "problem" is much bigger on the german forum, but no one can confirm it really. I`ve written also on the german forum about this problem. Most of the people on the german forum complain about a yellowish oder greenish led, but the number of burned leds can be counted with maximum 5 fingers. I think it`s 2 or 3.
On this forum + android-hilfe there are just 5-10 people who have really killed their led (not confirmed, some had no problem anymore after a flash or wipe), and no one can really confirm that it`s because of the chinarom.
On the german forum was just said it`s the chinarom and as evidence was said the different names for defy. MB525 vs. ME525. But in my eyes this is no evidence.
I`m sorry to say, but in my eyes this are only single bad luck. If the rom would really kill leds, then there would be hundreds of people with burned leds.

 

[cocus]

Hey, to check if you have burned the LED, just simple look at it. If you se any black-dot in the yellow thing in the center of the LED, then you have fried your led. (Im electronic technician). That could be made by over-current (if you get more voltage, then the current will be great, and the led just could support it).
If not, then it might be a ROM problem (means diffrent Drivers, or other gpio used for that). If another gpio was used, then you have to check if that pin is marked as OUT. But I don't think that is your case.

Anyway, to do a quick test, on a Terminal emulator, put the following:
(I think you'll need to be root)

echo 1 > /sys/class/leds/torch-flash/flash_light

That should turn on the Defy flash light. At least, that path is working on my stock ROM.

To turn off (in case it worked), just do:

echo 0 >  /sys/class/leds/torch-flash/flash_light

As I've tested, you might have to restart the phone if the flash light starts to "flash".

 

[Darkcaptain]

Hey, to check if you have burned the LED, just simple look at it. If you se any black-dot in the yellow thing in the center of the LED, then you have fried your led. (Im electronic technician). That could be made by over-current (if you get more voltage, then the current will be great, and the led just could support it).
If not, then it might be a ROM problem (means diffrent Drivers, or other gpio used for that). If another gpio was used, then you have to check if that pin is marked as OUT. But I don't think that is your case.

Anyway, to do a quick test, on a Terminal emulator, put the following:
(I think you'll need to be root)

echo 1 > /sys/class/leds/torch-flash/flash_light

That should turn on the Defy flash light. At least, that path is working on my stock ROM.

To turn off (in case it worked), just do:

echo 0 >  /sys/class/leds/torch-flash/flash_light

As I've tested, you might have to restart the phone if the flash light starts to "flash".

The black dot is visible always? Or have to turn the flashlight to see the black spot?

I tried the command in a terminal emulator in my case has not been turned on.

THX and sorry for my english.

 

[cocus]

The black dot is visible always? Or have to turn the flashlight to see the black spot?

I tried the command in a terminal emulator in my case has not been turned on.

THX and sorry for my english.

Yep, the Dark dot means something is burnt inside the LED.
The script gives you any error? Or just it didn't work?

 

[Darkcaptain]

Yep, the Dark dot means something is burnt inside the LED.
The script gives you any error? Or just it didn't work?

I speak spanish (you are from Argentina).

La pregunta es, que si se ha de tener activada la luz/Flash para ver el punto negro o si el punto negro es siempre visible? (aunque no esté activada la luz/linterna)?

No me dio ningún error, simplemente no se encendió el Flash / did not show any error, just did not work the flash.

En mi caso, el Flash no funciona, pero cuando lo enciendo, se puede apreciar una mini-luz muy muy pequeña, por debajo del 1 % de potencia que tenía al principio / In my case, the Flash does not work, but when I run it, you can see a mini-light very very small, less than 1% of power was at first

Thank you

EDIT: In my defy, I see no black spot .. but maybe I should compare it with another Defy to appreciate the difference. There is a picture/photo to see the difference?

 

[cocus]

I speak spanish (you are from Argentina).

La pregunta es, que si se ha de tener activada la luz/Flash para ver el punto negro o si el punto negro es siempre visible? (aunque no esté activada la luz/linterna)?

No me dio ningún error, simplemente no se encendió el Flash / did not show any error, just did not work the flash.

En mi caso, el Flash no funciona, pero cuando lo enciendo, se puede apreciar una mini-luz muy muy pequeña, por debajo del 1 % de potencia que tenía al principio / In my case, the Flash does not work, but when I run it, you can see a mini-light very very small, less than 1% of power was at first

Thank you

EDIT: In my defy, I see no black spot .. but maybe I should compare it with another Defy to appreciate the difference. There is a picture/photo to see the difference?

Ok, entonces tu led no esta quemado. El punto negro se tiene que ver siempre. Pero si decis que tenes algun tipo de luz en algun momento, me suena a algun problema interno. No estoy seguro de como esta alimentado el LED: puede ser alimentado por un pin de GPIO, o por un regulador. Si es el caso del regulador, puede que haya un conflicto con el driver (baseband o lo que sea, creo). En este caso se puede quemar el led si el regulador puede entregar mas voltaje de lo apropiado.
Si es un pin GPIO, el LED no se puede quemar jamaz, ya que este pin solo puede prenderse o apagarse, con voltajes fijos.


Ok, then your LED is not burnt. The black dot has to be there forever. But if you say that you got some kind of light at some point, it sounds like some internal problem. I'm not sure how this fed into the LED can be powered by a GPIO pin, or a regulator. If the regulator is the case, there may be a conflict with the driver (baseband or whatever, I think). In this case you can burn the LED if the voltage regulator can deliver more than appropriate.
If a GPIO pin, the LED can not be burned, because this pin can only be turned on or off, with fixed voltages.

 

[Darkcaptain]

The only thing I appreciate is a dark dot (light brown almost yellow) ...

 

[cocus]

The only thing I appreciate is a dark dot (light brown almost yellow) ...

Take a photo with macro-zoom. Or grab a lens and put in front of some camera to get more "zoom".

BTW, somebody could take a photo of a working-led Defy?

 

[lackyking]

LED has not found traces of burning.
Can use a suitable size to replace the broken one?

 

[lackyking]

Anyway, to do a quick test, on a Terminal emulator, put the following:
(I think you'll need to be root)

echo 1 > /sys/class/leds/torch-flash/flash_light

That should turn on the Defy flash light. At least, that path is working on my stock ROM.

To turn off (in case it worked), just do:

echo 0 >  /sys/class/leds/torch-flash/flash_light

As I've tested, you might have to restart the phone if the flash light starts to "flash".

I'm so sorry!
How to run this test? What's a Terminal emulator?

 

[cocus]

LED has not found traces of burning.
Can use a suitable size to replace the broken one?

I dont think that. Those LEDs are SMD (surface mounting devices). They're harder to get soldered because of the size, and the machinery. Of course you can try, you might get a good result. But first try what I suggest, if you're going to open your mobile:
If you have a normal LED (3mm or 5mm), you can test touching the same pins in both LEDs and see if any LED brights up. (Take note that the leds have 2 pins, and they work in 1 combination, not in every position). But this process is hard as hell, as you have to dissasemble the entire mobile and void your warranty.

I'm so sorry!
How to run this test? What's a Terminal emulator?

Find it on the Market: "Terminal Emulator". Or run it via "adb shell". But I think, the access to those paths is restricted to Root only. (as I see, you've changed your firmware, so I believe that you have rooted it)

 

[Darkcaptain]

I have only one compact camera, I can not make good photos ... that's all I could do, the last photo is in a dark room with the flash on.

 

[cocus]

I have only one compact camera, I can not make good photos ... that's all I could do, the last photo is in a dark room with the flash on.

Well, thats not definetively a burned led. In the first photo it might be... but in the other ones, definetively its not burnt.

Here we have a problem with software, or another part of hardware damaged. As nobody knowns exactly how its the defy schematics, I can't assure what kind of problem is that.

Take the phone to your company and take a look if you have good look with the warranty.