power fading when effects loop engaged...Please help! - Jemsite
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post #1 of 2 (permalink) Old 03-05-2004, 07:18 PM Thread Starter
 
Join Date: Jan 2002
Location: austin, texas
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power fading when effects loop engaged...Please help!

Ok, on my mp-2 anytime the effects loop is turned on the power will randomly fade out and sometimes not come back..AND, when I adjust the presence on the power amp I get static and then the power fades out again..most of the time it comes back. I turned off the effects loop and everything's gravy, even when I adjust the presence on the power amp. Does anyone have a clue what this could be? My Rivera TBR-1SL also started to do this...

I dont need anything in the loop for now so it's not a problem now..but I'd like to throw a g-major in there eventually. Any clue anyone? Anyone ever experienced anything like this? I hope it's just a preamp tube thing, or possibly a 12ax7 in the power amp acting up.
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post #2 of 2 (permalink) Old 03-08-2004, 01:55 PM
 
Join Date: Dec 2000
Location: Bellport Village - LI, NY
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It could just be a tube. It wouldn't surprise me if that's all that it is.

Hopefully it's not a bad IC or transistor. - Wait-I know nothing about innards! -LOL! I'm going by things I've heard before.

Are you sure it's not one of the devices that you are using in the loop that's the problem?

Mike 777 Haug
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power amp , preamp tube , rivera tbr

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