Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: japBLONK on January 27, 2017, 10:30:31 PM
Hey everyone,
I've been given a Peavey LTD 400 that isn't working, it has 40VDC on the output. I've taken every power transistor out and tested them (diode setting on multimeter) and they all test fine.
Attached is the schematic with all of the DC measurements I've taken around all of the other transistors. Since I don't know what the voltages should be, I'm hoping someone can help me narrow down where the problem might be.
I purchased a Peavey Renown 400 that was not working. I worked with that amp a long time without success trying to make it work as it came out of the factory (I am a novice at SS repairs). The preamp section worked fine so I mounted it in a box and have experimented with several types of power amps using a jumper cable from the "preamp out" jack.
How many AC volts does the PT put out on the 2 mains? How many DC volts do you get at the rectifier and large filter capacitors?