Less than one year old MB Fusion Problems.

[powellmacaque]

I've been using my MB Fusion pretty solidly for under a year now (into an MBE 115). I went to play the other day, and the tubes warm up, I get the distorted (but not like a blown speaker) sound of my bass for about a second, and then my sound fades away to nothing within a matter of seconds.

I really don't want to have to send away to GK, but I think it is under warranty still so I might have to. This is my only head so I'm kinda s.o.l. either way here. Could this be an easy fix?

[BassmanPaul]

Take the amp back to where you bought it and use the warranty. It's what it's for.

Edit: Trying to fix it yourself will void that warranty!

[powellmacaque]

Oh I know that, I was just trying to see if maybe what I was describing could be something simple like an AC chord failure or something like that. I got it from musician's friend, so would I have to send it back to GK (I didn't take out an extra warranty, but it's only been 8 months).

[username1]

I would bet its a tube but they are a pain to change in that amp. You have to remove a small curcuit board and the transformer to have room to take out the tubes "i did it on mine" so i would take it back because it might void your warrantee.

[wave rider]

Try running an instrument cable between the FX send and return jacks just to eliminate a dirty jack as the culprit.

=wr=

[powellmacaque]

Originally Posted by wave rider

Try running an instrument cable between the FX send and return jacks just to eliminate a dirty jack as the culprit.

=wr=

OK, so I ran straight from my bass into the FX return jack, and it worked (obviously without any pre-amp interaction of course).

What does that mean?

[clauscaixa]

What wave rider meant: connect FX send and FX return with a short patch cable.

Some MB users have experienced problems with dust in the connectors between pre and power-amp sections.

If patch cable gives you your amp back then you have that problem.

[powellmacaque]

Originally Posted by clauscaixa

What wave rider meant: connect FX send and FX return with a short patch cable.

Some MB users have experienced problems with dust in the connectors between pre and power-amp sections.

If patch cable gives you your amp back then you have that problem.

Ran patch cables from send to return, plugged into the input, got nothing.

[BassmanPaul]

Send it to GK while you still have a warranty. Anything else and you could be faced with the full cost of the repair!.