Quote:
Originally Posted by Ed in Tx
Be sure to check for a shorted electrolytic capacitor somewhere in that motor drive circuit too, could be something as simple as that. As old as it is that's a possibility.
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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.
05-21-2022, 10:06 AM
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