yamaha m-80

It looks like my post on my other M-80 project thread disappeared for some reason. To recap, Bright DBT. Disconnected #3 and got dim bulb and panel lights but TR111 gets very hot and starts cooking. Replaced D119&120, all caps on left channel for now, mica cap C159 by TR113 and R123,229, 231...

I figured as long as I'm ordering parts for my other M-80 project I may as well peek at this one as well. It actually works perfectly but obviously needs some attention. It looks to me like it's an early model with no updates, SN:2861. Just curious on opinions. Address the obvious couple things...

Hi guys, I recapped the amp, an inheritance of my father, because it was really a mess after a water damage. The dirty rainwater was more then a week within the amp. After a very long period of drying I never expect the devices work anymore - but it does! So I decided to recap and give him a...

Hi, I have no reason to NOT believe an audio technician, but he told me that running a cooling fan on top of a Yamaha M-80 power amplifier could short out the transistors because of the sensitivity of the bias transistors to air currents. Is this true? I'm asking because I like the thought of...

Purchased a M-80, which was advertised as "mint in the box" (you know how those go) and knowing it would arrive with at least some work needing to be performed, I weighed the cost vs. return and knew what I was getting into. It did arrive with damage from being dropped by FedEx, smashing all the...