- IMG_0523.jpg (207.58 KiB) Viewed 1462 times
I just bought a 2nd hand metroamp factory built jtm45. The amp looks brand new and the workmanship on the inside is beautiful.
I had a built a couple jtm-45's years ago and mine never looked nearly as good lol.
The gentleman I bought it from said he had it in storage since he bought it 2.5 years ago and it looks like it.
Well, I played it on 10 for about 30 minutes yesterday and 30 minutes today and it sounded great but I just started to have problems with it all of a sudden. I had it on standby for a few minutes while I was playing my other amp today and when I turned it back on it had a loud hum.I tapped the top of the amp and it went away for a couple seconds but came back after I played it again.
Then, it lost a good bit of volume and finally lost even more volume and developed a non-musical grating type of distortion.
I'd say this was all during a period of 2 minutes or so.
Have I fried the transformer? The tubes glowed or slightly arced a slight blue when I was playing it but other than that they look fine. Also, I checked both fuses and they're fine and I looked at all the connections and didn't see any burn marks, etc.
Any ideas? I've attached some pics.Thanks so much!!
