Musician Gear & Tech Discussion

Help me guys.

I have a Roadster, had it for more than a year now and no problems.

First, The other night I ran a line out from my Triple Rec slave out into the send return of the Roadster. Making a psuedo stereo rig. Ive done this many times and never had any kind of issues. It was working normally at this point. I didnt plug a guitar straight in to the amp after I did this.

Anyway, I had a gig this weekend and used the Triple and since we have another gig this coming weekend I left the Triple in my equipment trailer. I thought I would play the Roadster a little on my lunch break and plugged a guitar up and no sound. I changed guitar cords no difference. The tubes are lit up and its making the noises it normally does when fired up. Since I had put a cord into the effects return the other day I put a patch cord between the send and return to see if that did anything still nothing. I only had a few minutes at lunch and was just going to play for a few minutes. What should I try next. Whenever Ive blown a fuse the whole amp shuts down so it cant be a fuse. I recently put a full set of tubes in the amp. Im running EL 34s at the moment. I did play with the channel switch on back and it did make some pops when I swept it back and forth. I hard bypassed the effects and tryed switching the channel switch on the back of the amp to see if I could get a sound. Later tonight I will try some more stuff.

The only other thing I can think of at the moment is that last night I was sweeping the floor around it and I may have pulled the pedal switch loose from the pedal board. It seems like before I pulled the cable out and ran the amp before.

Any suggestions would be helpful.

Thanks in advance.

OOO, wow John, I have no Idea.
I would assume you checked the leads to the speaker, yes?

Yeah Sans, first thing I did.

Ussually when one of my amps goes down its pretty obvious, this one has me puzzled. Im at the office and the more I think about sweeping around the amp last night, I kinda kicked the footswitch wires and maybe I pulled them loose a little and it just kills the amp. Im going to check it out later. I have also found that most of the time it is something indeed simple.

I havent fried one in a while, but maybe I did something to this one.

We will see.

I hope you got this sorted out John. It is odd that it would be fine one day and down the next with no symptoms. Usually that is something simple that was overlooked, we've all been there before.
That amp has a bypass switch for the loop doesn't it? I'm assuming you checked to make sure the loop didn't accidentily get switched off. I don't know much about that amp. I know Marshall uses FETs to do the switching of the loop in my amp. FETs are notoriously sensitive to transients and can be easily damaged by static electricity. After hearing of a few people having this problem I started making a point of touching the tip of my cables to the chassis to discharge any potential static electricity in the cable before plugging into the loop. The symptom of a failure is the same as you are describing.

The V1 tube was blown and when I say blown it actually broke and milked the top of the tube.

Sorry I meant to post this up a couple of days ago, but I had a hot water heater blow out and flood my house so Ive been a little busy.

Im on vacation for a coupld of days...

Dang! Tubes blowin' up, water heater blowin' up...better be careful with all the fireworks tomorrow.

Glad you were able to work it out John. Sorry bout the mess I just wanted a hot shower.