Stiletto Trident - Feedback issuses

[doug7410]

I won a Trident on ebay about a week ago. I just got it yesterday. It sounds amaizing!! The only issue is on channel 2 I get massive feedback. Even with the gain only at about 9:00 or 10:00. This is on the tight gain setting or fluid drive. I even have an ISP decimator noise suppressor in front of the amp and it barley helps. Has any one else had this problem. Could it have anything to do with old tubes. I got this thing on ebay and I don't know how old the tubes are. Thanks for any help.

 

[mikey383]

Swap out V1 and/or V3 with a good tube. Those are the gain stages for channel 2. One of them probably went bad.

 

[asookazian]

+1, check preamp tubes