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Panasonic SA-NC6 keys not working

I opened the device for service, it was done well, and all the components were intact when I closed the frame while the power was cut off. I got the part of the front panel of the device locked, only the power and the key and the sound are working, and the rest of the keys are not working, the part is giving the door, and the door does not open, and the door is locked. With the remote control, the whole system works well. 

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PushyG
PushyG picture

Hi!

Please check the flat cable of front PCB.
If tact switches (key) wrong, the main controller can't detect them.

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Hamid
Hamid picture
Hi ..thank you for help.. The
problem that occurred with this device went into troubleshooting mode and it displays DvD Error 895 and the panel keys are no longer working. Apparently, the Dvd steering system caused the deck part to fail and the doors to lock. It was not resolved by checking the pcb cables. In the Panasonic errors for 895, it refers to the language recognition part and mentions a number of the IC. The point is that the normal map of the factory's interests does not allow correct detection of IC tracking, and the situation is bad because of government sanctions. Access to the dealership and replacement of parts.. In the meantime, your help and guidance will be a great favor.. With all the efforts to maintain it, it is really a pity that this happened.. The question is, do you think that the IC circuit of the Optic DvD is damaged, while After checking the pcb cable, the sound of usb and dvd was cut off 
​ ?!and only the radio and aux work

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PushyG
PushyG picture

Hi!
Unfortunately, static discharge through your hand could destroy the optical unit. The optical unit must only be touched with a grounding strap. But this can be repaired (replaced) in a specialized service, but the costs will be high. Of course, after a quote, you can decide whether to repair or buy a new one...

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