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Messages - g1

Bad caps should not make the supply voltages read high.
Getting the correct power supply voltages should be your first step.  You might be lucky enough that it solves all your problems.

I can't access dropbox files.  Could someone please attach the power amp and power supply schematic from the first post?
Just for the record, I'm attaching the datasheet for the TIS58.  It's pinout does not match the interfet 2N5484, nor the on-semi or centralab 2N5484.  So that's 3 possible pinouts for the Randall Fet's.   :)
From the voltages you listed, it would seem that T4 collector is connected to T6 base, as you have the same voltage listed for them.
But T4 collector should go to T6 emitter, so once again the voltages listed are questionable.
T4 collector connects to T6 emitter, so not sure why you are showing different voltages for those pins. (T4 and T6 are BCE pinout)
The value of the amp has nothing to do with what parts cost.
If you can get another bandit 65 for 50 bucks, buy it and use it for parts.  You probably won't find an adequate transformer for that price.
Sorry if that sounds harsh, but that is the reality of parts costs.

You need a power transformer that puts out 60V center-tapped (30-0-30) good for at least 120VA.  If it's not the exact peavey unit, you will have to drill and cut to make it physically fit the chassis.
Since you already replaced Q2, next suspects would be C7 or Q3.
The link you posted is not working.  Try to attach your picture directly.  When you respond to this post, click the 'preview' button and you will see the option to attach a file.
Quote from: Jesse on May 15, 2024, 02:21:50 PMAny book recommendations for Electronics Repair / Troubleshooting?
Lots of good suggestions in this thread:
Nice work and great name for your project.   :)
Ok, the amp wants CBE then, so the parts are correct type.  If that is true then voltages for T5 in post #42 are impossible. 
The highest voltage for T5 should be at the emitter.
If it's easier for you to call them out as pin 1,2, and 3, that will work as well.
Recheck T5,T4, T6.
Sounds good.  Try it with load.  Some amps have trouble starting up loaded while on the bulb limiter.
If you get a bright bulb when you power it up loaded, you will have to power down, remove load, and power up.  Then (if bulb dim again) connect the load while amp is running.
Yes, any transistors without plastic backs that are mounted on the heatsink need an insulator.
If the Q9 collector was in contact with the heatsink (ground), that probably explains the excess current through Q4 (via R97).
Quote from: Jesse on May 07, 2024, 04:01:33 PMQ9 has fresh thermal paste and seems to be tight to the heatsink.
What about it's insulator?  Don't it and the output transistors that are mounted on the heatsink have mica insulators or similar?
I think you got those R97 and R98 voltages reversed, but voltage across R41 seems normal, and 0V across R98 would be good.
So there seems to be about 50mA current through Q4, which is too much.
Is it possible Q9 is no longer insulated from the heatsink?
Quote from: markorock37 on May 07, 2024, 12:59:57 AMIs it possible the new ones dont have the same pinout as the originals?
Yes it is possible.  Measure resistance from D4 cathode to T5.  One of the T5 pins should read zero ohms to D4 cathode.  Which pin is it, pin 1,2, or 3?
Which T5 pin reads short to R42?