Electronics > Beginners

Question about the function of a capacitor in a circuit

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fedaalis84:

--- Quote from: xavier60 on March 10, 2019, 06:10:01 am ---Although  there should be no leakage, it is not enough to cause problems with the output stage biasing.
Leakage around IC700 might cause DC offset problems, but will not damage the output stage.
Leakage could affect the protection circuitry directly.

--- End quote ---

The voltage drop across base and emitter on Q751 is still out of whack compared to its left channel counterpart (~1V right channel vs. ~0.6V left. So I'm hopeful replacing that may yet resolve the issue.

fedaalis84:
With the filter cap issue, it sounds normal. Supposedly the negative leg of capacitors are generally not insulated from the aluminum can.

fedaalis84:
Still going strong on this bad boy.

Just popped IC700 in today.

Can't do any testing until I get the display wiring re-done. (I wound up messing up the flat cable, being impatient, and soldering in detatchable jumpers instead... but still need to finish that).

Ohhh what a mess this beast is.

But learning a bunch in the process.

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