When my extra wire arrives, I'll try using a longer length and routing it out towards the input jacks and around the board. So at least I've localized the issue a little more.Īs it is in the above photo yields the quietest results.Īs far away as possible from those transformer wires is definitely the trick.
The volume of the hum is now controlled pretty much exclusively by that wire from the volume pot going to the preamp tube. The way the transformer wires are now, they don't affect the volume of the hum when moved, jiggled, prodded. May have lessened a little bit, but not near enough to say its fixed. Hum is still there with this configuration. I snipped that sucker literally seconds after taking the above photos.įuse holder and 1amp slo-blo are on the way along with a few lengths of wire.Īlso slightly rerouted the wire that went from the preamp tube to the volume pot. Not looking for dead silence with this thing, but would like to be able to put a mic in front of it. My first guess was a cold solder joint where the group of transformer wires meet the board, but after moving those wires around some, it seems that its their location relative the the things around them that are most culprit.Īnyone here able to tell me what might be going on here?Īnd of course, what the simple fix is. Pulled the chassis to investigate the hum hoping to see something obvious. The amp has had a recent recap along with a tone stack mod. Loud enough that I call it more of a buzz than a hum.
So at least I've found the area that seems to be creating the bulk of the problem, however, I don't know if the hum is going away because the wire is being pushed against the caps, or because its being pushed away from the volume pot. 1 Just received a 6v6 version Musicmaster Bass Amp. I was able to wedge the group of wires behind a small bolt in the chassis to hold it in place this way. If I push the wires away from the volume pot and up against the two big caps on the board, the volume of the hum drops considerably. Should be noted as well that the wires are also close to the volume pot just before they attach to the board. When those three wires are floating in the space between the transformer and board/caps, the hum is at its loudest. All looked clean and tight, but was able to pinpoint at least a good portion of the hum cause to the three wires going from the transformer to the board. Just received a 6v6 version Musicmaster Bass Amp.
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