W510 Heat after unlock!

[Rocco]

i unlocked a w510 and after unlock ist nothing on lcd. I changed a diode and thy lcd will be ok. But! The phone its heat! After power on 5-10 sec and the phon its very hot.

How to solve this problem?

thx!

BR!

[Hamas]

W510 Heat after unlock!

i unlocked a w510 and after unlock ist nothing on lcd. I changed a diode and thy lcd will be ok. But! The phone its heat! After power on 5-10 sec and the phon its very hot.
How to solve this problem?
thx!
BR!

Hello.Friend You probably damaged TP track
on PCB. Check it with microscope carefully.
BR
Hassan

[pablor1977]

Hi ypu need to replace diode VR901, if heating remains then remove VR902; see attached pics worked for me

BR.-

[Rocco]

Yes I did it a shotrt-circuit on the VR901 and the lcd will be ok. But the heating its still.
I test the VR902 removing, maybe its help!

@Hamas
The pcb and the tp its good, not damaged.
I did it the unlock procedure first shot.....

[Rocco]

VR902 removed!
The phone allways heat!

[pablor1977]

Hello, the problem is that VR901 MUST BE REPLACED, NOT SHORT CIRCUIT.

If you don't have any W510/W5/W490 pcb where to get the replacement, try with other similar diodes from other pcb, if not good replacement then you will have blank display, try others replacements until you get it working.

Try replace it then post result.

BR.-

[Rocco]

Hi!


Thanks for the quick reply!

I understand, but without diode (No LCD) & with short-circuited diode the pcb its heating. I dont think, when I repleaced the diode, the the phone will be ok. I try change the diode and i post it, whats happend....

[pablor1977]

Yes I know that if you apply the simplified function of a diode it must be the same, since that diode VR901 seems to be protecting circuit from inverse polarity, but has I told you this worked for me in a W510 that has same problem, heating after a few seconds of being powered on, heat begins or it's more notorious at keyboard, so I replace VR901 using other pcb to get the replacement and heating problem was gone! Hope you can fix it luck!

BR.

pablor1977

[Rocco]

Thanks All!

Ok, I repleace the VR9001 and then post it, whats happend...
witch pcb have same diode as VR901? Motorlola or else....

[pablor1977]

I don't remember from wich pcb I get replacement, try search with similar size, try if diode is not correct you won't get lcd backlight, luck.

BR.-

[Rocco]

Good Morning!

I changed the diode from a SE K600/K608, and the phone its will be really OK!:smilewinkgrin:

Thanks The Help!

BR!

Rocco

[pablor1977]

Excellent Rocco, congratulations!

And thanks for share your experience finding correct replacement

Best Regards.-

[Rocco]

maybe this help for anybody.
I used this:
K600/K608 pcb

[jeead]

unlock

three days to unlock a phone way you not purchases the code?

[Rocco]

Dear Friend!
Read the all topic befor You post!

@Hamas
The pcb and the tp its good, not damaged.
I did it the unlock procedure first shot.....

I dont buy nck, if I can unlock!
This phone its not the first w510/w490 for me!!!