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Post by Deleted on Aug 8, 2011 15:28:33 GMT -7
I began playing my Jaz this afternoon, and noticed a humming. Since I'd been tinkering with the effects loop pedal (analog echo) yesterday - I decided to see if unplugging my loop cables would do anything. The hum got a little less, but the volume decreased. Took it off standby to see how it sounded, it was a little louder - but it didn't seem to be as loud as it should be. Checked the switch in back: full power engaged. Turned it up a taste and hit a chord on the PRS and it went down. As I put it on stand-by, it made a cascade-ing hiss sound until it went silent. Where do I begin, as this is the first tube amp of mine that's needed anything? THANKS EVERYONE - tom edit: I just cleaned all my jacks with deoxit a few days ago***
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Post by nicholas on Aug 8, 2011 16:47:22 GMT -7
Hey Tom, Might wanna post in the "ask the experts" section, as it's purdy slow around here My first advise would to be clean your loop jacks.... but it seems as though you already did that. They can be tricky to clean however. Did you see benttop(steve)'s pictures on how to clean them? Plugging a known good short patch cable across them should rule that out entirely though......if you just cleaned them......as usually the problem with those is only when nothing is plugged into the loop, and you are using the little "dimple" connection on the switched jacks...... but that cascading hiss sound seems odd... prob. just a tube. My only advise is to ask where more people are looking
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Post by Deleted on Aug 8, 2011 19:15:15 GMT -7
Thanks Nicholas - I'll do that. I appreciate your reply. cheers
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Post by mcook217 on Aug 8, 2011 19:29:13 GMT -7
when was the last time the power tubes were changed? amps will do funny things when the power tubes go bad. that would be the first place i'd look.
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Post by JD on Aug 9, 2011 6:45:07 GMT -7
Yes I would check the power tubes. Seems that most of my "weird things" that happen to my amp are power tubes and rectifier tubes. Sometimes my tubes last for a long time and other times they have a pretty short life.
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