Sporadic crackling coming from my guitar combo, help!

Duncorama · #1 09-23-2010, 11:38 AM

hello! i use 3 amps, 2 bass and one guitar amp. The guitar amp is a marshall 2x12 combo, i only put treble through it so i get the high end i need and have had no problems...until last night. Whilst i was playing i started hearing this really harsh loud crackling, what could that be? I wasn't constant but you could really notice it when it happened, really hrash sounding.
Also, when i tap the top of the combo it happens then topo which suggests to me that it's not a blown speaker.
Anyone any ideas?
ta!

BassmanPaul · #2 09-23-2010, 12:01 PM

Quote:

Originally Posted by Duncorama

Also, when i tap the top of the combo it happens then topo

If tapping on the cabinet causes your problem to occur, you have a bad connection inside the amplifier. I suggest taking the amp to a tech.

What you are trying to say with the rest of the sentence I have no idea.

Paul

Duncorama · #3 09-23-2010, 12:14 PM

hahahahah, ok that makes sense and has calmed me down a bit (i'm skint and the thought of having to buy a new amp scares me...muchly).
Would a loose connection be obvious to spot if i had a look inside?
What i was trying to say is that i thought i may have blown a speaker becasue i have no idea what that would sound like.
cheers for the info!

jelwood · #4 09-23-2010, 07:04 PM

I am having a similar problem to yours except that I tend to get no sound at all or a very low volume sound with crackling. Tapping the chassis seems to make it either go away or come back, depending upon wether it was there to begin with or not. I doubt you could just see a bad connection in your amp. You'd have to use a multi meter to find the bad spot, but that is tech work.

BassmanPaul · #5 09-24-2010, 10:42 AM

Quote:

Originally Posted by Duncorama

hahahahah, ok that makes sense and has calmed me down a bit (i'm skint and the thought of having to buy a new amp scares me...muchly).
Would a loose connection be obvious to spot if i had a look inside?

Most likely not. If you have electronics experience you'll have to track the problem down. If not it's tech time and poking around inside could lead to a more expensive repair bill.

Paul

Duncorama · #6 09-24-2010, 10:58 AM

thanks for the suggestions guys! a friend of mine had a listen last night, he reckons it's either a loose connection or even a piece of solder that has come loose and is bouncing around inside. tech next week!