Help repairing peavey max combo amp

[arthur759]

So I have this combo amp that I bought awhile ago and used for a few months, and now someone I know wants to buy a cheapish bass amp, but mine, now that I try to use it after a few months, isn't working properly.

I can get sound out of it, clear sound like it's supposed to be, but then out of the blue it will get very staticky, if that's a word, or just completely stop making sound, but in a few moments it will be just fine again. It seems to happen more frequently at louder volumes, I've checked to make sure it's not the speaker, and I'm pretty positive it isn't.

So I opened it up earlier, and I honestly have no idea what I'm looking at, the only thing that seems a little suspicious is what looks like melted glue or rubber around a few cylindrical nodes covering a little of the surrounding area. .


Any trouble shooting help, or repair advice any one can offer?

 

[B-string]

Is there an "effects loop" on the combo? The stuff around the round things is normal, it is a glue to stabilize those capacitors so the weight won't flex the leads and cause the solder joints to fail.

 

[nashvillebill]

Does this amp have an effects loop, or "preamp out/poweramp in" jacks? Often these switching jacks get corroded. The simple test is to run a cable from "efx send" to "efx return" ( or "preamp out" to "poweramp" in) and see if your problem goes away.

Deoxit can be used to clean these corroded jacks if the cable test indicates that where your problem is.

 

[arthur759]

Nope no effects loop, just an active in, passive in, and direct out. It also seems like the passive doesn't have as big as a problem, but it's still there.

 

[jeffmaxwell]

What model or name is on that amp?

 

[arthur759]

Is there an "effects loop" on the combo? The stuff around the round things is normal, it is a glue to stabilize those capacitors so the weight won't flex the leads and cause the solder joints to fail.

That's what I figured, but it seems that it's burnt compared to the rest of them, and more spread out as well.

 

[BassmanPaul]

Does the amp produce static on it's own with nothing plugged in, or only with something plugged in??

 

[BassmanPaul]

That's what I figured, but it seems that it's burnt compared to the rest of them, and more spread out as well.

A picture is worth a thousand words y'know!

 

[arthur759]

Does the amp produce static on it's own with nothing plugged in, or only with something plugged in??

Only when something is plugged in, and only when it is making noise.

 

[elgecko]

You've eliminated a faulty bass/battery/cable, right?

 

[BioWeapon]

You've eliminated a faulty bass/battery/cable, right?

This.

My bass makes a static-like sound when I push the cable that's plugged into it sideways. Just a bit of pressure, sometime it even disconnects. Check everything before doing something to the amp!

Also, as mentionned, pictures help.

 

[arthur759]

This.

My bass makes a static-like sound when I push the cable that's plugged into it sideways. Just a bit of pressure, sometime it even disconnects. Check everything before doing something to the amp!

Also, as mentionned, pictures help.

This MIGHT be the problem, as it does seem to happen when I shift the cable, however, I thought that couldn't be it as I had just taken the cable out of the package, it is only a cheap 10 inch cord however.

I will try to get pictures up in a few, having issues at the moment.

 

[elgecko]

Then it sounds like the jack on your bass.

 

[arthur759]

Then it sounds like the jack on your bass.

But it only happens on this one amp, every other amp that I've played on, about 3 since this started, Ive not had the issue.

 

[elgecko]

Jack on the amp?

 

[B-string]

The jack on the amp could be corroded from non-use. If you are trying to post pics you may need to sign up with a free graphics host like www.photobucket.com. Upload there and copy the "IMG" code they provide, paste that code to your posts here and they will display without having to resize.

 

[arthur759]

Jack on the amp?

That's possible, but if it is then both the passive and the active jacks are jacked up, so how would I go about checking or fixing that problem?

 

[BbbyBld]

Does it look like Invalid Link Removed

 

[arthur759]

Does it look like Invalid Link Removed

It is indeed that amp.

 

[alaskaleftybass]

Does sound like the amplifier input. And cutting out at higher volumes, maybe from the vibrations cause the short.