1st post, first time attempting to 'restore' an older piece of audio equipment. I'm fairly experienced with car amps/head units, but not home audio gear.
I picked up a M-45 amp on CL a few days ago for $80. All original, including dust from the 80s...
I did a quick test and both channels work as expected, so no troubleshooting to do.
Non of the caps are visibly leaking or bulged. Lots of excess flux that I already cleaned off.
At one point in it's life it was used in a humid environment. There's light corrosion on the jumper wires and some component leads that's not cleaning off with isopropyl alcohol. Is there anything that will clean it off?
There's some heavy rust on the transformer. What's the best method for cleaning it?
Do the power/audio transistors need to be isolated from the heatsink? I was planing on replacing the thermal pads with some decent paste.
Is there anything in particular I should watch out for?
30 year old dust is a PIA to clean off.
It's always nice that yamaha has stuck with the same style, it looks right at home next to my RX-A2020:yes:
I picked up a M-45 amp on CL a few days ago for $80. All original, including dust from the 80s...
I did a quick test and both channels work as expected, so no troubleshooting to do.
Non of the caps are visibly leaking or bulged. Lots of excess flux that I already cleaned off.
At one point in it's life it was used in a humid environment. There's light corrosion on the jumper wires and some component leads that's not cleaning off with isopropyl alcohol. Is there anything that will clean it off?
There's some heavy rust on the transformer. What's the best method for cleaning it?
Do the power/audio transistors need to be isolated from the heatsink? I was planing on replacing the thermal pads with some decent paste.
Is there anything in particular I should watch out for?
30 year old dust is a PIA to clean off.
It's always nice that yamaha has stuck with the same style, it looks right at home next to my RX-A2020:yes:
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