TMaster
Transistors for teeth? They do have roots...
She's alive and kicking again! I de-soldered both new output trans, and both driver trans, and checked them, they were all ok even after the second fuse blow. I finally got in a new 100 ohm trimmer today and popped it in, re-soldered all the transistors back in. I built a dim bulb tester yesterday for around 10 bucks. I had to buy 2, 75W bulbs rated at 53W each and a spliter to make to get it close to 100W. (new efficient bulbs these days). Then i was cleaning in the garage today and found a huge box of 100W old school bulbs that were still good, and used that instead . I powered it all up and was expecting to see a bright bulb from the receiver still being shorted, but it wasn't!! Huge sigh of relief.... The 100 ohm bias trimmer must have been the last component causing the short. Not sure why, I checked the damaged trimmer again today and it was 300 ohms on one side, not open. All this stuff is crazy touchy. I spent forever checking everything on the board.