Bose AWRCC3 problem

[EMUD]

Hi,
I have a base AWRCC3 on my bench. When I turn it on it starts, shows "please wait" for some second and returns to standby.

I have checked the well known problems (power supply electrolytics, dc switching transistors and pcb tracks), but there is no problem.
The clock function is working, and the setup by remote control, too.
I have checked the main pcb and the serial signals, the peripheral devices on this board (rds decoder, eeprom ppl control) were programmed
directly after power on. I need a schematic diagram or service manual for this unit to look further. Please help !   

Thanks a lot

EMUD

[Waldi]

Hello, did you manage to solve? If so what was damaged? I have the same problem in the same device.