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finally popped the amp out while I wait on the vert out. sounded crappy, shorted filter cap. I used the dremel tool (looks like a bone saw) and just cut it off in place. I little messy and you need to protect other parts around if you slip, but very very fast and best thing is you leave the underside completly intact. drilled some holes, put in caps, pulled out the guts, put the top back on. I really like the fact that you can leave it all attached down below. The amp is SE with 2 EL84 tubes. I did not care for the single shared cathode resistor so changed it out for separates, upped the values some too to run the tubes a bit cooler. stayed with the orig values on the bypass caps.
(was a 100 ohm with a 20uf bypass, went with 250 ohm and 10uf on each tube). Before the bias was about 7v but now I found 12 on one and 4 on the other , yikes, got some nos tubes and now I get just under 8v on each withing .2v of each other. Sound MUCH better, I was getting all kinds of distortion. Granted changing the tubes would prob have been all that was needed, but I really like to check the bias so a good tube is not ruined by a bad one. The set came with out a MPX subchassis so I will have to search out ebay and see if I can find one, I want the stereo to work on FM.
I also will prob direct wire an input for the TV converter stereo out. The wafer switch is a little funky on this one and I cant seem to make out how to separate out the TV side into two channels like I did on my astrosonic. this wafer switch looks like its made from ceramic and you cant see the contacts, so with out a schematic its hard to figure how they took the single tv audio feed and get it two both channels. The astro was easy you could see the jumper wire in the wafer, I just cut it and installed another RCA jack.
oh the can on the tuner was open as well, loud hum when attached to the now repaired amp. bone saw to the rescue.
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