Quote:
Originally Posted by vortalexfan
Well I looked through the service data and I found 4 electrolytics in particular that seem suspect in the motor drive circuit that could be causing my issue, C18 (C1118 in the Sam's), C30, C32, and C34 (C2530, C2532, and C2534 respectively in the Sam's) that are all in the 11.9V Source (15V) rail, and the 12V Source rails for the supply and take up reel motors.
One in particular looked kind of out of place (it looked a little newer than the rest of the capacitors in the unit and also it was a higher capacitance rating than what's called out in the Sam's), which is C30 (C2530) which is supposed to be a 100 µF 16V but instead had a 470 µF 16V capacitor in that spot, which unless there was some sort of design change made to the unit that wasn't reflected in the Sam's (or that was reflected in the Sam's) I think someone installed the wrong size capacitor in there, which I'm apted to think that someone put the wrong size capacitor in there because as I said the capacitor was a completely different style of capacitor than the rest of the capacitors in there.
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Re-read your post. It's probably OK depending where it is in the circuitry. I wouldn't necessarily trust Sam's as gospel either! Might have been a change during production.
If I had that machine first thing I would be doing is checking every electrolytic in it with my ESR meter. I actually have two, one I used at the shop and the other for home use, it's that important and useful.