audi q7

[zabra]

hello
i have a Q7 AUDI for repair
the client have fall a cup of coffee on the pitch
control in the central consol
so the coffee damage the printed circuit
and now i cant make control from it
the control from steering wheel is ok
the printed circuit is a triple layer very hard to repair
without shema or service manual
has anyone face this problem before?
i need the shema to complete my job
any help please

[M1DJF]

to get service manual at this stage it will be difficult as dealer only item, try and get exchange unit from dealer.

[zabra]

i found a used board it cost 250 us dollars
now i will compare it with the damaged one try to find
the bad point