20 Most Recent Crate Cfs3 Questions & Answers

Its a TRS to TRS cable (stereo connectors)

may not be compatible with win 10 or if you just upgraded and not installed from a disc, the upgrade may be the problem

My mate's crate uses two stereo jack leads similar to 6.35mm guitar leads but stereo. You can buy them anywhere.

Most of these have screws on the bottom... OFTEN they are "hidden" under labels or the rubber feet. For plastic cases often there are snap tabs as well.

I don't know how you know the tubes are good... It is possible they are microphonic... try tapping them with a pencil (only need to worry about the smaller ones).
Beyond this look for cracked circuit board or bad solder... especially near the control pot leads. This is a common problem. Look for cracks near the booard mounting points.

I could not find a manual for the footswitch... USUALLY the details are covered in the amp manual it is connected to... and the only issue is if the particular footswitch is compatible with a particular amp.

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.