RNS-510 white display problem

[magnat88]

Hello,

I have a Siemens VDO RNS-510 mfd3 and my display show white colour only, but the rest of the functions work (i can't see what i do) but the radio and cd works. I've tested with another pcb board and works perfect (front panel display but without the lcd)



Do you have any ideas how i can repair it? I think it's something on the contrast part...
Help

[Maartinj]

If you have interface for RNS 510 ( RNS manager) there is a options for LCD problem.

[magnat88]

If you have interface for RNS 510 ( RNS manager) there is a options for LCD problem.

Not good... I have carprog... with something else I can discover the problem? vag diag on OBD?