M-Pulse Venture power toggle switch repair

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pabloguitar
Mark II
Posts: 131
Joined: Sat Mar 24, 2007 6:44 am
Location: Illinois

M-Pulse Venture power toggle switch repair

Post by pabloguitar » Wed Jul 13, 2022 1:16 pm

Hello,

I know someone selling an M-Pulse Venture combo, but the power switch needs replaced. It should be an extremely easy fix but the nut on the outside is recessed so I cannot get a wrench or socket on it. It doesn't look like it can be removed from the inside. It appears that if the face of the amp were removed, then it would be easy to get that nut removed and easily replace the switch, but there are a lot of components attached to it from the inside. Anyone have any experience with this or knowledge on it?

Thank you!
Paul
Triaxis preamp
2:90
Roadster
Mark IV (revision B)
Dual Rectifier (2 channel) chrome/chrome #27** Revision F (SOLD)
Dual Rectifier (2 channel) #2** Revision C Pre-500 (SOLD)
(2) Mesa 1/2 back 4X12 cabinets (enclosed tops)
Abacus foot controller

pabloguitar
Mark II
Posts: 131
Joined: Sat Mar 24, 2007 6:44 am
Location: Illinois

Re: M-Pulse Venture power toggle switch repair

Post by pabloguitar » Wed Jul 13, 2022 3:11 pm

Update.. I called Mesa and they said the faceplate needs to be removed. Trying to troubleshoot and see if there is anything else, I jumpered the power switch. It powered on, but no sound. Checked the external and 2 internal fuses, no issues. Looks like I'll pass on this purchase.
Triaxis preamp
2:90
Roadster
Mark IV (revision B)
Dual Rectifier (2 channel) chrome/chrome #27** Revision F (SOLD)
Dual Rectifier (2 channel) #2** Revision C Pre-500 (SOLD)
(2) Mesa 1/2 back 4X12 cabinets (enclosed tops)
Abacus foot controller

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