GK MBFusion 500 problem

[loopee]

Plugged in my MBFusion 500 tonight and the sound was very distorted and scratchy so I just banged it gently a couple of times and the distortion was gone and it's back to normal for now....

Question:

Is it a badly seated tube?
Is it a bad tube on the way out and I should just get new tubes?

I must repeat, I did not bang it hard....just picked it up from the front about 1 inch off the cab and thudded it down on the cab very gently.....I usually don't mistreat my gear....

edit: Plugged into my GK a few hours later and the distortion was back....played through it for a few minutes and it went away though some scratchiness stayed....guess I'll take it in to my local music store....bummer cause I need it for 2 outdoor BBQ parties in the next 2 weeks....

 

[Daniel Piper]

Mine was doing that as well a few months back! I would press down on the steel casing by the tube slots on top. It would come back on. I sent it in for a service - they took it apart, put it back together, hey presto - no problem anymore :-/

 

[loopee]

Did you send it in to GK or a local music store? I'm in Canada

 

[MrLenny1]

Sounds like the tubes may need re seating.

 

[loopee]

Exactly!!!! That's what I did and it seems to be working fine now......

Thanks everyone....just wanted to make sure before I opened it up....never did that before...first time I have tubes