Stiletto Deuce problem

[jgcable]

Hello everybody. This is my first post. I have been a longtime Boogie player. Mark III's, Nomads, Rectifiers, DC's, Studio's and now a Stiletto.
I have a problem with my Stiletto Deuce.
With the loop switch activated I get barely any volume. Maxed out it is just about bedroom level. If the loop is bypassed the amp works perfectly.
I tried swapping out V4 but it didn't change anything. I hooked up my G-Major to the loop to see what kind of signal I was getting in the loop and the G-major's meters are barely registering any input even with the loop level control maxed out and the input on the G-Major maxed out.
Any ideas???
Thank you in advance!!

 

[Barracuda]

Are you sure the solo and output controls are above zero. They serve as master volume controls when the loop is activated.

 

[jgcable]

Yes. Both controls are turned up.

 

[Wrake]

check your send control. If your processor isn't getting anything, your send signal could be too low (turn it up). Or maybe a bad cable from the send jack...

 

[kramerxxx]

I had this exact problem on my Lonestar and it was the loop preamp tube.

 

[RJS]

I had a similar problem on my Duece. Ended up spraying a 1/4" phone plug w/ contact cleaner and inserting it into the send & return jacks 10-15 times. It's worked perfectly ever since

 

[jbird]

Where were your channel masters? Are'nt they effects send level controls with the loop engaged?