Headunit issues?

[Trepkos 10+ year member]

So I sold a friend of mine my old Kenwood x791 CD player, which worked perfectly fine upon removal from my vehicle. Two months later he informs me that CD player isn't working, won't turn on. He claims he brought it to Circuit city for them to install it and they informed him that the CD player was non-functional. So he has brought it back to me.

So he says that the CC guys hooked it directly to the battery and it wouldn't come on. I proceed to do the same and it came on just fine. Now when I hook it up to the battery as before, it won't come on.

Are there any other tests to test its functionality? Is there any way I can check and see if there may really be an issue with the CD player and what could possibly be causing this problem?

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[zack39648 10+ year member]

maybe a the faceplate is losing a connection and it is infact getting power ..?

has he removed the faceplate and reinstalled it incorrectly ?? maybe he broke something ??