Help, why is my amp all highs?... Problem resolved

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Bob-I
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Re: Help, why is my amp all highs?... Problem resolved

Post by Bob-I »

LeftyStrat wrote:Awesome news Bob. Now we all know yet another thing to check.

So was the cap leaking?
No, it looks just fine, but I pulled it, bottom returned, put it back in, bottom left, pulled it...
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Structo
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Re: Help, why is my amp all highs?... Problem resolved

Post by Structo »

Whoa, so you found the problem?

Which cap was it?
Tom

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Bob-I
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Re: Help, why is my amp all highs?... Problem resolved

Post by Bob-I »

Structo wrote:Whoa, so you found the problem?

Which cap was it?
I edied the first post. Filter cap on the reverb return.
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LeftyStrat
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Re: Help, why is my amp all highs?... Problem resolved

Post by LeftyStrat »

Bob-I wrote:
Structo wrote:Whoa, so you found the problem?

Which cap was it?
I edied the first post. Filter cap on the reverb return.
So does it measure out of spec? Did you replace it and things returned to normal, or have you left out the reverb for now?
It's never too late to have a happy childhood.
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Bob-I
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Re: Help, why is my amp all highs?... Problem resolved

Post by Bob-I »

LeftyStrat wrote:
Bob-I wrote:
Structo wrote:Whoa, so you found the problem?

Which cap was it?
I edied the first post. Filter cap on the reverb return.
So does it measure out of spec? Did you replace it and things returned to normal, or have you left out the reverb for now?
Well, I can't measure it, my cheepy cap meter blew out when I put it on a charged filter cap.

Yes, I replaced it and problem is gone. I had a hard time believing it so I went back and forth between the good and bad a few times.
talbany
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Re: Help, why is my amp all highs?... Problem resolved

Post by talbany »

Bob-I wrote:
LeftyStrat wrote:
Bob-I wrote: I edied the first post. Filter cap on the reverb return.
So does it measure out of spec? Did you replace it and things returned to normal, or have you left out the reverb for now?
Well, I can't measure it, my cheepy cap meter blew out when I put it on a charged filter cap.

Yes, I replaced it and problem is gone. I had a hard time believing it so I went back and forth between the good and bad a few times.
I don't get it..If you went directly out of V1b coupler right into the PI (Like your 1st post mentions)
6) Ran a jumper directly from the output cap of V1B to input cap of the PI
That should have bypassed the reverb section all together..Oh well..Glad you got it fixed!!

Tony
" The psychics on my bench is the same as Dumble'"
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Bob-I
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Re: Help, why is my amp all highs?... Problem resolved

Post by Bob-I »

talbany wrote:
Bob-I wrote:
LeftyStrat wrote: So does it measure out of spec? Did you replace it and things returned to normal, or have you left out the reverb for now?
Well, I can't measure it, my cheepy cap meter blew out when I put it on a charged filter cap.

Yes, I replaced it and problem is gone. I had a hard time believing it so I went back and forth between the good and bad a few times.

I agree, it's a puzzler. I can't see how this cap killed the highs when the circuit is was supplying was not in play. Even more puzzling was that the same rail was supplying v1 and the PI so you'd think it would impact the signal I injected into the loop return.

I don't get it..If you went directly out of V1b coupler right into the PI (Like your 1st post mentions)
6) Ran a jumper directly from the output cap of V1B to input cap of the PI
That should have bypassed the reverb section all together..Oh well..Glad you got it fixed!!

Tony
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