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Post by stramm8 on Mar 28, 2008 21:28:13 GMT -5
Was playing my Splawn tonight and plugged an old boss overdrive pedal in. Sounded crappy so I unplugged it. At that point the amp started buzzing like a 60 cycle hum. Changed the cord, changed guitars, checked ground on guitars. Everything looked good so I replaced all the pre amp tubes whith a new set i had laying around. Still no luck. Could it be a power tube going bad? Any help would be appreciated.
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Post by Ayton(e) on Mar 28, 2008 21:31:21 GMT -5
Plugged anything new in to the same power strip as the amp lately? How about the wall wart for that pedal?
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Post by stramm8 on Mar 28, 2008 21:41:45 GMT -5
Plugged directly into the outlet and was using a battery in the pedal.
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Post by SonicExplorer on Mar 29, 2008 1:58:17 GMT -5
I didn't catch what specific model of amp you have. But if it's a 100 watter, then this is something you can do to rule out an output tube going bad:
- Put the amp in 50 watt mode.
- See if it still hums.
- If it still hums, pull the two outside power tubes.
- See if it still hums.
- If it still hums, swap the two remaining tubes with the ones you pulled out.
- See if it still hums.
- If it still hums, then high probability the hum is NOT related to the output tubes.
Sonic
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Post by LooseCannon on Mar 29, 2008 6:15:48 GMT -5
This is the competition forum so I assume he has a competition...
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Post by stramm8 on Mar 29, 2008 8:21:09 GMT -5
its a competition.
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Post by SonicExplorer on Mar 29, 2008 21:24:14 GMT -5
Can a moderator maybe do something to improve the font up top that indicates which forum a thread is sitting in so it is at least readable? I never noticed which forum this thread belonged to because the font up top is almost un-noticable.
Sonic
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