Hiya
I am repairing a Dynacord Powermate 1000-2 mixer/amp and have a question about DC blocking capacitors in the signal path.
I am getting a slowly dropping DC on the DISP1 node (output of I6AA op-amp) on switch-on. This is causing the green "signal present" LED to come on on that channel which takes about 30 seconds to turn off. It seems to be caused by a charge on C35A that dissipates slowly through R54A (1M Ohm).
It seems to me, it would have been better to put the C35A on the output of I5AA with a resistor to ground. Is there a reason why this would not work.
I have checked all relevant components and power supplies and I cannot find any faults but I'm sure this is not normal behaviour.
Any help greatly appreciated.
Does anyone know why my circuit images are not loading in the post. I know the links are good.....
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