Nice project for the weekend!
Smaller 20 amp 661, serial 31.. it doesn’t get older than this! AC on/off switch is at the back.
Melted AC secondaries + shorted bridge:
Awesome adapter kit from the wonderful people Recycled Audio:
Power Transistor bank changed on the bad rail for good measure.
Output Cap re-cap
The 10R resistors are fine.. but the sleeves crumble in your hands!
Replacement Rectifiers
New AC secondaries to replace the melted wiring:
Old rectifiers with crumbling sleeving
New AC secondary wiring in place:
Rails back and voltages look great:
New Front AC switch wiring
I now need to fit fuses, what about these inline blade type?