The problem goes like this. I had the system up and running except for the EQ. I connected the EQ but did it wrong. I used the tape 1 loop on preamp to tie in EQ, I didn't loop it through tape 1 in and out. Played it a few minutes like this but the EQ wasn't actually being used. Decided to just go preamp out to EQ in then EQ out to amp in and it worked fine. Few min later the left or right ch...can't remember which one started to fade in and out. Then it quit all together. So I removed preamp and just used EQ and amp. Fed my phone music to input of EQ then to amp. Both channels working without preamp. So I knew problem was in preamp. Started taking preamp apart. Found two 2sa912 transistors with open emitter/base. They are on the mc/EQ amp board. Ordered some replacement transistors and decided to do a recap on preamp. 95% of caps done. Missed some caps when ordering so ordered remaining caps and transistors Sunday night. I am very new at this component level work so I probably am in over my head. I have a lot of wires that were wrapped around post that I cut, so I have to solder them back on. Oh I believe that 2aa912 is a pnp so I ordered its compliment npn so they will match. I learned that by research. So that's were I'm at.
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