Mesa Boogie Roadster no sound is coming out... help

[Hybrid138]

The fuse is not blown and all the power tubes are on. I replaced the V1 tube and still nothing on any channel.

I was at practice and everything was fine and suddenly there was no more sound coming out from my amp but for some reason my playing was coming out from my bassist's bass amp???? I don't understand. We unplugged his bass and left his cable in and you could still hear me come out from it. My amp was in no way connected to his.

I took it home to check it out and I can't figure out what's going on. I've tried different cables and swapped the V1 preamp tube.

Thoughts?

 

[tele twister]

Sounds like the bassist's cable is an antenna. Are using a wireless?
Did you check the wires to the speaker, or try substituting to another speaker?
Is your practice space haunted?

 

[Hybrid138]

No one uses wireless and I tried several cables. His cable must have been acting like an antennae some how but I don't know if science can explain it.

 

[deeman]

Is your practice space haunted?

I'd first and foremost call the Ghost Busters. After you rule that out, try replacing power tubes perhaps? Sounds like it may need to go to the shop.

 

[ryjan]

Yup. The first thing I'd do as well is to rule out any possibility of supernatural interference. Definitely.
After that I'd probably swap every cable, tube, and even guitar to rule out everything outside of the amp itself before sending it to a tech.
Don't forget to keep a speaker load in place and never cross the streams.

 

[Hybrid138]

There isn't a tech in my area, if I can't fix this can I ship it to Mesa/Boogie so they can have a look at it?

 

[knotts]

Can you replicate the problem on a different day? I would say you would need to methodically replace each cable, 1 at a time with a known working cable). Remove all effects and just go strait into the amp. If the issue continues, conduct a paranormal investigation as previously mentioned.

 

[Hybrid138]

I went direct into the amp and switched out cables. I haven't tried recreating the situation because I'm focused on make it work first.

 

[knotts]

Do you have a separate speaker cab you can try? Just to rule that out as an issue.

 

[Hybrid138]

I don't have another speaker cab with me. I only have a power PA speaker and I wouldn't want to put the amp into that.

 

[Hybrid138]

UPDATE!!!! I have an Avatar cab with multi ohm inputs on the back, two 8 ohms and one 16 ohm. I've always gone 16 ohms from the roadster to 16 ohms on the cab. I decided to try 8 ohms to 8 ohms and everything works perfectly now??? What is messed up, the cab or the amp? 8 ohms from the amp to 16 on the cab doesn't work.

 

[Hybrid138]

ANOTHER UPDATE! Ok so my rig worked with the orange from 8ohms from the amp to the cab which is 16ohms I believe. There was a weird noise that happened with delay on... It went away for a while but then came back. I would t call it feedback but it was a strange noise in addition to the delayed signal.

I should also mention when the problem originally occurred I was shock by my cables going into my pedals messing around with them and also the speaker cable (I believe)

 

[ryjan]

There is no Dana. Only Zuul.

 

[domct203]

ANOTHER UPDATE! Ok so my rig worked with the orange from 8ohms from the amp to the cab which is 16ohms I believe. There was a weird noise that happened with delay on... It went away for a while but then came back. I would t call it feedback but it was a strange noise in addition to the delayed signal.

I should also mention when the problem originally occurred I was shock by my cables going into my pedals messing around with them and also the speaker cable (I believe)

Time for a trip to the tech..... You should NEVER be shocked by your amp.

Are you sure the power outlet you are using is properly grounded?

Dom

 

[Hybrid138]

We use a surge protecter but no one has been shocked since...

 

[domct203]

We use a surge protecter but no one has been shocked since...

A surge protector will not correct a bad or non-existing ground.

You need to check for proper wiring at the outlet. I have one of these in my gig bag, could save your life.
https://m.musiciansfriend.com/pro-a...PLA-device^m-adid^30426431907&source=3WWMWXGP

Dom

 

[kyldh]

I had a really old Fender tube amp that shocked me all the time... definitely a ground issue... something to get checked out ASAP. Without a proper ground in the amplifier, YOU can easily become the ground. Remember the old saying, "electricity follows the path of least resistance" (not 100% true... but true enough for our purposes haha). Surge protector only counts if your amp is actually grounded properly in the first place.

Also, (and I'm no expert here...) did you take ryjan's advice and swap EVERY tube? I saw that you swapped V1, but I'd just try them all and rule that out. Certainly wouldn't hurt.

One time awhile back, in the middle of band practice, we stopped playing for a moment and I noticed that I could hear every last single little nuance of electrical "interference" that the dehumidifier running in my buddy's basement had to offer. I was pretty worried because I didn't really think a tube would cause this... sure enough... I was dead wrong and a new tube solved it. Tubes can do some pretty creepy stuff when they go bad... maybe tubes are actually bottled-up ghosts? ...since we're exploring the whole "ghost" possibility here...

I sold and shipped my Rectifier Preamp a few months back and the buyer messaged me in a panic because it was producing NO output at all. It worked before I shipped it, so I told him to try swapping the tubes in case one somehow was damaged in shipping, and sure enough that solved the problem. (why can't it always be that simple?!)

 

[bandit2013]

amp voodoo. Could be a ground fault. ring out your power cord and check pins to plug with an ohm meter to check for open circuits (unplug the cord at both ends usually works better).

Was there anything plugged into the wrong jack? Getting shocked and you are alive to tell about it sounds more like a ground fault issue or Neutal /hot swap in the wiring. (possible that the ground became a current carrier)

I would have it checked out for safety. The guitar and amp is meant for mental tranquility and not shock therapy. The tip of the speaker jack can hurt you, not sure on voltage potential but the current is high enough to give you some pain. Not something I would care to find out.

Odd that the bass amp would be broadcasting your signal. If you were using a common power strip, and if your amp checks out okay, toss the power strip as it may be defective.