20 Most Recent Crate Flexwave Fw120h 120 Watt Head Dsp Effects - New Questions & Answers

Hi there,I have the same problem with my flexwave 120. I opened the amp to measure several capacitors on the small effect circuit board. If one of this capaciters have internal short circuit, wich will effect the others causing effects to fail. I removed them one by one to find possible short circuit. All capacitors were ok. I think the problem is in the processor wich is to diffucult to replace. I think it's easier to replace the effects circuit board. But where do we find this board??

Josh,

I also need schematics for this amp. How about whoever finds it first shares with the other?
Cool, Thanks,
bob at stumpweb.com

It sounds like the DSP processor is either about to go out, or is mostly there. Have a qualified amplifier technician take a look at the DSP. Also look up the cost of a new one.

Hope that helps! Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/cameron_463100ffd54b591d

Check your guitar with another amp, or a different guitar with this one with no effects pedals, etc, to narrow it down to just the amp. At that point, try reversing the polarity. If none of the above helps, you may indeed have a bad ground somewhere and you'll need a tech to follow it to the source.

I also have this issue. Same crate combo amp. There is a loud buzz emitted only when there is a cable plugged in. Cables and instruments checked good, only possible issue is inside the input of the amp. Popped it open, solders and connections were intact and appeared solid. Anyone have a guess as to why this is happening?

It is a very simple amplifier and the pa4a is similar.

https://www.google.com/search?q=Schematic+crate+g60xl&oq=Schematic+crate+g60xl&aqs=chrome..69i57&sourceid=chrome&ie=UTF-8

Request from Crate

bad output transistors.

Clean the volume and tone pots with de-oxit cleaner

remove top screws by handle.

https://www.amprepairparts.com/schematics.htm

Try with a on/off footswitch Wrong cable, or bad PCB connection switch on main tone board.

SLM sold the company years ago to Loud audio. Its only supported online now. Loudaudio.com

Power supply capacitors failed. This is a common problem with 1990's crates, also the power on "POP".

https://www.amprepairparts.com/schematics.htm Use the GX-65, its the same preamp shopwn just with 2 power amp sections

There is a short somewhere, check your wiring and solder points.