Sl55 -->no screen

[Chris02]

I got a SL55, flashed dead.

I repaired it with Martech. Phone powers on again, but shows only a empty screen (blue).

It is no contrast problem! I already checked it ;)+

LCD is ok two. Tested it in other phone and tested LCD from other phone at the SL which makes only the blue screen.

Testpoint resistor has been removed including one pad, but I think that has nothing to say?

Shematic wasn't not very usefull for me :(

Maybe somebody has an Idear, except changing CPU

[darkeye_bob]

You know the history of the phone ?
Who killed the flash and how ?
You have tried to delete FFS files ? Maybe someone have tried a patch or something,,,
I don't think that is a hardware problem... but... give me pls more details.
All my best,
Dark

[Chris02]

I made fullflash ;)

Someone tryed to unlcok the phone, didn't work.

So he flashed the phone, made some experience with testpoint.

I read Full Flash from my working SL55 and flashed it. Nothing tried also to flash it with freia (use Martech at first time).

And Contrast tools are also not working (don't change something)

[darkeye_bob]

Ok, is 99% a contrast problem, even that contrast tool ( what we find on the net )don't seems to be working.
If you can, ask for an authorized Siemens service to change the contrast with the last version Contrast Adjust tool V2.12 or higher ( above 100 value ! ). Is the only way. I experience many times, same problems with MC60 and SL55.
Pls let me know if this is useful.

Good luck !

Dark,