Hello everyone. I have come across an interesting problem with my F-50 head. The sound fades out when being played at bedroom volume (8 o'clock). It started about two weeks ago. The sound fades out with a crackling sound within about 15mins of using the amp. It comes back again but then fades out again and will keep doing this. I have still been using the amp at gigs (taking a big risk) and it does not happen at all, all night and thats with the volume at half way or just over. Its not specific to either channel.
Anyway i changed the output valves with normal mesa 6L6's and the problem is still there. I am gonna have to try preamp tubes next cause i cant think of anything else to do. I tried tapping the preamp tubes with a pencil to see if they went microphonic but they seemed fine.
Can anyone help with this please????????
Anyway i changed the output valves with normal mesa 6L6's and the problem is still there. I am gonna have to try preamp tubes next cause i cant think of anything else to do. I tried tapping the preamp tubes with a pencil to see if they went microphonic but they seemed fine.
Can anyone help with this please????????