I have a Fender Mustang GT40 amp (I know I should have bought the Katana). It's a great little bedroom amp, but it started wigging out recently. I switch it on, and the screen lights up, the pedal lights up, but it doesn't get any further than that. Not even the Fender logo screen. So this kind of tells me that it is a software issue rather than anything to do with the actual hardware.
I've tried everything I can think of but no joy at all.
Is this something that can be repaired? Seems a shame to chuck away a five year old amp away, but considering it cost less than £200 brand new, it's not something I would want to throw a lot of money at.
Any advice from the good people of The Fretboard as to who could fix this, or whether I should just cut my losses and get something else.
Comments
Switchmode power supply - pre amplifier - DSP - class D power amp.
Unplug the amp and leave it off for a couple of hours before you open it up. The SMPS will have 320V DC ish
on the primary side and the caps will stay charged to that voltage for a while.
The DSP is often on it's own PCB as it's made by someone else using an ARM or similar DSP chip. It will often connect to the pre amp via multi pin headers so check those connections are good. Basically if it can't read the DSP part it won't be able to boot even if the power supply and pre / pwr sections are good.
Unfortunately other than checking connections and reseating cables / headers there's not a lot you can do without a fair bit of experience and knowledge but the above is worth a go.