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View Full Version : V3 only turns on if I unplug the flex cable from the video


mingo82ar
06-17-2009, 04:56
Hi!, tough it's my first post here and English is not my mother language I'll try to make my self as clear as possible.
I have used the Search function looking for similar thread, but nothing came up.

A few days ago I inherited a V3 from my father (Nothing bad, he bought himself an N95), after a couple hour of use I noticed the AMOUNT of dirt (Split, ear wax, etc) the phone had. So I opened it up for a general cleaning.

I had previously worked with cell phones (or mobile phones, always mix them:confused:), unlocking, cleaning, flex swap, flashing, etc, and the sort of things. Even tough I tried my best to be real careful I somehow manage to snap the flex cable (Perhaps my big clumsy thumbs had something to do with it...). I realized only after reassembling everything and trying to turn it on, and having no display at all. Everything else working flawlessly, so I made a backup with MPT. No big deal, nothing patience and u$s 10 couldn't fix.

Bought a brand new original (At least that is what the gorgeous saleswoman said :D) V3 flex. Went home and replaced the dead one. Assembled the phone, inserted SIM, and a charged battery; press power key and the keypad turns on for about 5 seconds (No display, neither of them), and turn off for 3 seconds, and start blinking 1 sec ON, 2 sec OFF, and so on till I remove battery.

Here's the funny thing, if I unplug the flex cable from the display, it acts as previously described. It can send and receive phone calls, connect to MPT, etc, but no video (Of course!). So I figured out that there must be something wrong with my LCD, but nothing happened at it, not even static.

Could my LCD be short circuiting something? Or most likely I should look near the main PCB? I did clean the PCB with Alcohol and let it dry real well.

Help is GREATLY preciate, here in Argentina, cell shops aren't much of a cooperative people. They want to charge me with a standard fee just for looking at it.

The phone is nice, but not worth the expense of repairing it.

Thanks in advance.
Gonzalo//

exciseman
06-17-2009, 22:34
It is possible and I repeat, possible, that you have the wrong flex cable assembly. The keypad/flex cable replacements for the V3 and the V3i/t/r series look identical. Electronically, they are not. You should possibly check with the people who supplied your replacement.

katocarlos
06-18-2009, 07:39
yo pienso q el el integrado de video esta roto ,puedes colgar una foto del main board?

mingo82ar
06-18-2009, 23:56
It is possible and I repeat, possible, that you have the wrong flex cable assembly. The keypad/flex cable replacements for the V3 and the V3i/t/r series look identical. Electronically, they are not. You should possibly check with the people who supplied your replacement.





I've thought of that but the seller sell only V3, non V3i cables. And there some numbers written in the keypad that match those of the original flex.

mingo82ar
06-21-2009, 23:37
yo pienso q el el integrado de video esta roto ,puedes colgar una foto del main board?

No tengo forma de subir una foto de la main... pero la revisé con lupa y no encontré nada malo.

mingo82ar
06-21-2009, 23:42
I've upgraded the firmware using a wellknown monsterpack with flash 42.17r.

Now the phone starts up with the flex conected, I can receive phone calls and connect to MPT. Earspeaker works, and bluetooth light also works. Still no video at all on both of the displays.

Sugestion? Anyone? :(

Gonzalo//

katocarlos
06-24-2009, 22:26
I've upgraded the firmware using a wellknown monsterpack with flash 42.17r.

Now the phone starts up with the flex conected, I can receive phone calls and connect to MPT. Earspeaker works, and bluetooth light also works. Still no video at all on both of the displays.

Sugestion? Anyone? :(

Gonzalo//

rework conector main board to flex ,post results

katocarlos
06-24-2009, 22:27
No tengo forma de subir una foto de la main... pero la revisé con lupa y no encontré nada malo.
resoldar con estacion de calor el conector de la tarjeta al flex,postea los resultados

mingo82ar
06-30-2009, 02:05
resoldar con estacion de calor el conector de la tarjeta al flex,postea los resultados

Tenía una estación de soldado, ahora solo me queda un soldador lapiz. Pero gustoso buscaré la forma de conseguir una estación de soldado y probar.

Gracias!
Gonzalo//