hey folks,
i just picked up an 80's pro/sumer caliber 2 track tape deck, and I'm having an issue... i'm trying to narrow down the problem area, and any help you can offer is appreciated!
I'm running out a Digidesign 192 (+4dB) into a -10dB inputs on the tape deck. Not sure about impedance matching between the two devices; I can't find any impedance specs for the 192 analog outs anywhere.
when I got the tape deck, the Channel 1 input PCB board was unseated from the motherboard, so no input getting to that channel. I seated the board, had input and output, everything is great, then short while later all of a sudden no output from either channel!
I popped off the back, and it looks like the solder points behind the multipin interface to which the input cards attach are burnt out, but this is where my inexperience is a problem. As best I can tell, nothing completely melted or blew up, but the solder points at the Channel 1 and Channel 2 interface to the motherboard do appear to be brownish, almost smokey. Definitely not as shiny as all of the other solder points on the whole machine...
... I've attached a photo for reference. It's pretty fuzzy, but you can get a sense of how un-shiny the solder points are, underneath the white clips. There's another much cleaner solder point off to the right, for comparison.
So, what do you think? Does this look like I fried my motherboard? Would connecting the tape deck in such a way even cause this kind of damage? Is this fixable? What is the meaning of life?
Really, I'm in the dark on this stuff, but trying to learn. If you have any thoughts please share them...
Thanks