Music - Page 9 - Recent Questions, Troubleshooting & Support

While it is possible (probable) it is caused by the AC mains modulating the output due to a power supply fault, it could be caused by inadvertently creating a hum loop due to poor grounding - check out the link below...

Fender Music | Answered on Sep 27, 2019

first checkout your cable
if you still have problem , change you pickup

Fender Music | Answered on Sep 27, 2019

The most likely problem would be wiring. By dropping it you loosened or disconnected a wire.

Roland Music | Answered on Sep 27, 2019

what is your question?
if not working, you have to open the device and find out where it is not connecting (broken solder joint? bent or worn out contacts? wire off?) and repair. or if beyond repair, order a new part.

Roland Boss... | Answered on Sep 27, 2019

It's always possible the new battery had lost it's charge before it was installed. Check it with an ohm meter for it's voltage. Other than that, either the contacts in the battery holder may be in need of cleaning or the battery wasn't installed correctly.

Roland Music | Answered on Sep 27, 2019

did you check the fuses and if thats not it then the light may be burnt out.

Roland Music | Answered on Sep 27, 2019

there are spraycans of cleaner that u can buy to cure it. sounds like dirty pots like maybe your volume pot on your amp or the pots on the instruments your playing. get the cleaner ,spray in the pots and move them back and forth and thats it. my marshall amp was doing the same and that was my cure. i dont remember the name of it but phone long and mcquade or another store and ask. hope that helps ya.

Roland Music | Answered on Sep 27, 2019

That is the first thing to check. They are most likely inside the circuit board. Remember to replace them with the same voltage and amperage ratings.

Roland Cube-st... | Answered on Sep 27, 2019

Hey guys, so I know that this thread is rather ancient now, but I just surfed here because I had a similar problem with mine, I managed to fix the problem of the power not turning on with either the power or battery, after it working and then just randomly not turning on.
Here's what I did:
I opened the speaker grill, and took out the right speaker, everything looked fine inside on the circuit board, thinking it might be a fuse - I started looking for it- to no avail.
I was just about to give up when I accidentally bumped the wires to the power switch, and the light came on! Huzzah!!
I played with the wires a bit because the light kept flickering and would turn on once then not again.
I pulled the wires off the switch and took the switch out of the box, then used my pocket knife to scratch away some discoloration from the terminals on the switch, then re-attached the wires, but only put them on halfway, and the problem was solved!
This was only a quick fix, and I went out the next day to Altronics (I'm in Australia) to buy a replacement power switch.
I re-attached the power wires to the new switch, slid them on the whole way and I haven't had a problem with it since!
I hope this helps someone before they take it to a technician who will probably do exactly what I did and charge you $300
Happy Jamming legends! Rock on!

Roland Cube-st... | Answered on Sep 27, 2019

You probably have issues with caps in the power supply....I would check that it up and look for buldging caps and replace any that you find....

Mackie Music | Answered on Sep 27, 2019

It is possible that you have issues with caps in the power supply...I would check those first...and you can get the schematics from Peavey....

Peavey Music | Answered on Sep 27, 2019


Music | Answered on Sep 27, 2019

Contact Roland..They have owners manuals on their site for download...

Roland Music | Answered on Sep 24, 2019

Use the clean channel...don't use the drive function...unless you have something wrong with the amp...

Jazz Music | Answered on Sep 24, 2019

Contact Peavey...They have no problem in releasing technical documentation....I always get info from Peavey...

Peavey Music | Answered on Sep 24, 2019

Contact Peavey....they release schematics....and can sell parts as well....

Music | Answered on Sep 22, 2019

Ok. First, check your power supply voltages....then check IC2 for correct voltages and also check C9 ,C17 for ESR...clip signal can come from either woofer or horn circuits...lift one end of R19 in the preamp ckt....this will break the woofer signal and see if the light goes out...if it does, look for issues with the pre-amp after it seperates the hi and low signals...if not, then look for problens in the horn circutry.....and get a will make it so much easier....good luck....

Samson Auro D415... | Answered on Sep 22, 2019

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