Hi, new guy here. I took up the guitar at an older age and am having alot of fun. I bought a Randall RVC, a store specific version of the RD5 but having an issue. I've downloaded a book and want to learn about tube amps but I'm hoping someone can point me in the right direction. The RVC is a 5 watt, 6v6 tube, one channel with toggle switchable eq. Gain, tone and volume controls along with the toggle switch mentioned previously. The volume control continues to work (like a master) when using the effects loop. I mention that because I have a Bugera V22 (which has channel and master volumes) and all volume is defeated when using the loop. Got the amp a year ago used. After a month it ran for a short time, volume faded and went out. Couple of days later I tried it, did same thing only faster. Then it didn't generate sound at all. Put it away for months, broke it out yesterday and it did same thing only just barely, couple of seconds and fade. I'm able to use it as a power amp, the loop and volume work fine. Tubes checked, that's about it. Sprayed connections with Deoxit. I'm going to use this as a chance to learn what I should about the stuff I own. I'm aware of the dangers involved. What do you folks with experience in these things think is the most likely culprit? I appreciate any help I can get. *Edit - I'm not an experienced forum user. I just realized I can post photos. On the way.