Recent content by ca7922303

Has low somewhat distorted output thru send jack only. Replaced all power/preamp tubes w/known good tubes. Contact cleaner on cables in efx loop in and out/overnight, jumped efx loop: No change. Have schematic, multimeter, some exp. desoldering, soldering caps/resistors, etc. No how to drain...

Contacted Mesa about a low distorted output signal. Rich said it sounded like the MOSFETS. Got 10 Exicon MOSFETS from Profusion of England. Installed new MOSFETS and have exact low distorted output as before. Anyone have any ideas were to go next with it? I am working on it myself, so I already...

Jumped EFX loop, have normal output both channels, tubes sound strong. Plugged into EFX loop return jack, again normal volume but of course no preamp, no controls. Sprayed contact cleaner on plug and installed into send and return jacks 15 times, no change still low output. Any ideas would be...

Early serial #(600's), per mesa support, changed 12AX7, jumped send/return efx loop, plugged direct into return efx loop with bass, no change. Passive good known bass, cab, and cables. Need to fix myself. Mesa wants $450.00 w/o shipping both ways. Any ideas from similar issues would be greatly...

Musicman HD130 Head, bought it off ebay for parts or repair. Both channels output was extremely low and distorted. Noticed the rectifier board(I think) was bowed up in the middle so I removed the two screw on each end of it and tried to flatten it out somehow. After reinstalling the screws I...