No output on SR 2 band preamp…….need some troubleshooting help.

No output on SR 2 band preamp…….need some troubleshooting help.

Hey guys and gals, I need some troubleshooting help with my 1987 SR 4 2 band preamp.

Long story short……. years ago the pot on the bass control stopped stopping. It would spin all the way around. Rather than solve the issue I opted to “up grade” to the SD basslines 3 band in 3 holes. Never really liked it…………fast forward 20 years. After having the bass passive for a number of years I decided to go original.

I fixed the pot. Re installed the original preamp…….. no out put. I have 8.26V+ on pin 7 and oddly enough around 7.6 V+ on pin 6 ( output). Any one have any trouble shooting tips here. I feel comfortable replacing anything on this preamp. I am in rual Brasil but can get parts for this as they are common.

Thanks

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