Fender DRRI - Tremolo/Reverb input squeal???

[BakerySpecial]

I have a fairly new DRRI that I use as a pedal platform. I play 99% of the time through the normal input side of the amp, but the other day I plugged into the tremolo/reverb side and the amp began to squeal immediately. I'm guessing its a bad tube somewhere in the circuit. Any help on how to trouble shoot would be appreciated. Amp is probably still under warranty but if its an easy fix I'll just do it myself. Thanks.

 

[BakerySpecial]

Anyone know what's up?

 

[honeyiscool]

I know it seems very basic but have you checked if the tubes have worked themselves loose? My Vibrolux was sounding awful the other day and so I looked at all the preamp tubes and two of them had gotten loose. I took them out, made sure all the pins were straight, reseated them, the amp sounded perfect.

 

[BakerySpecial]

Thanks

 

[Vibroluxman]

V2 is the primary driver for the trem channel. Start there.

 

[jonnytexas]

V2 is the primary driver for the trem channel. Start there.

This is where to start.

 

[DV52]

What was the culprit ?