| Author | Message | ||
| Spot Mandoo (spot) Username: spot Registered: 10-2007 |
I�m sure this question has been asked 10,000 times but I�m new to the forum so I�ll ask anyway. I have a really clean 410-130 and it sounds great for the first couple minutes then all the sudden the high end disappears and it�s real bassy sounding. This only occurs on the Master vol channel and if I hit the strings real hard giving a louder signal the amp will fix itself bringing back the right tone for a few seconds then drop the highs again. This amp is in immaculate condition, not a spec of rust or any indication it�s been stored anywhere damp. When I took it apart and inspected the board for cold solder joints and cracked resistors it was flawless. I numbered the OP amps and switch there locations ruling out they were bad (though I guess the sockets could have issues. Basically all the obvious things seem to be just fine. Has anyone run into this before? Is it a common problem? Can someone steer me the right way before I break down and pay way too much for someone to repair it? Thanks -spot | ||
| Mike Kaus (mm210) Username: mm210 Registered: 05-2006 |
It sounds dumb but you MIGHT check/clean the input jacks. They get corroded sometimes and will loose front end signal. USUALLY, though, they get tinny but anything's possible. After that, re-flow the solder connection on the tone and volume pots-verify good ground on same pots. Other than that, you probably have a cap opening up. MIke. |
Tue, 03/25/2014 - 09:31
#1