Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: koosh on September 25, 2014, 01:43:36 PM
First post and a recent hobbyist of tinkering and repairing amps. please bear with me through any dumb questions.
I have a Crate DX-112 amp that has intermittent loud crackling.
this is a digital amp and the chasis has been inspected with no obvious bad caps. I suspected it could be a dirty pot and used deox it on the pots and inputs which I thought had fixed it but it hasn't.
What else could cause this? Could this be a sign of a speaker going bad?
Find out what it is, we don;t guess.
Ball up your fist and whack the top while it is running. Does that make it crackle or make any sound for that matter? If so, we have exposed a loose connections.
Does it do this with nothing plugged into the amp? Or only when a guitar is plugged in? And if only while the guitar is there, does turning the guitar volume control to zero stop it?
Actually connections is a broad category. Parts like jacks and controls are often grounded to the chassis my their mounting nuts. A loose nut can make noises like crackles. Make sure they are snug. Don;t overtighten, just make sure they are snug. Same with mounting bolts for transformers. Loose bolts can make crackles.
Inside is a circuit board. Get something insulated, like a wooden chopstick, and while it runs, poke at each part on the board, looking for any that react.
Ok thanks for your reply
I will try using those methods of troubleshooting.
Very new to this but I didn't know if it being a digital amp if it were prone to a whole new set of common problems or not as so far i've only worked on Tube amps.
thanks again.
Of course it can have different problems, but that doesn;t excuse it from having all the basic problems that affect anything soldered together.