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2nd channel became distorted after hitting a big cord the gain channel is affected when the gain is off it works fine both channels i am a hobby tech i can read schematics i have had this amp apart once before for a hum problem this turned out to be a ground conn on the board fixed it all was good i suspect a capacitor has bit the dust in the gain section before i open it up i wonder if anyone has had this problem and what the fix was

Hi, Here is a link to the service manual for your amp. To download the manual, when the sentence below the Document preview box changes from This file is downloadable free of charge: …processing… to This file is downloadable free of charge: Get Manual, click on the Get Manual as this is the download link. Be patient. It takes a little while to find the file. If it it only affected when the drive select switch is operated, check the circuit around the U2A / U2B amps section. (make sure you’re looking at the 15R cct and not the 15G cct). Hopefully this is of some help