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Baard · May 29th, 2003, 04:01 PM

On my SR yesterday the sound became weaker and thinner, so I wiggled the guitar cable a bit and touched it up at the amp, and got some loud crackle/pops. (More pop than crackle) Then i pulled tha jack out and put it back in and the problem was gone, i could not provoke it by touching the jack up at the amp again. Any Ideas what it could have been ?

Baard

eryque · May 29th, 2003, 04:11 PM

I've seen this sort of problem with all sorts of electronics that use plugs and jacks like this, sometimes it's just a dirty spot on the plug that hits a dirty spot on the jack at the point of contact. the surface where they touch is very small, so it ain't hard to cause some interference.

Wally · May 29th, 2003, 04:16 PM

Baard, you could have aproblem with either the cable or the jack....more likely it is the jack. You may have a grounding problem with the jack's contact to the chassis or a piece of dirt may have gotten in the way of making good contact between the plug and the jack.

MJ Harnish · May 29th, 2003, 04:24 PM

Check the cable first since it's the most likely place a failure could occur. I would also clean the jacks since they probably could use it: Just squire a little contact cleaner (Caig De-Oxit is probably the best choice) into each jack and push a plug in & out a few times.

If you're feeling ambitious, the best way to clean them is to pull the chassis and use a wire brush attachment on a dremel tool running at low speed; they'll look brand new after that. 8) However, be careful since you don't need to get shocked in the process.

Baard · May 30th, 2003, 01:13 PM

Well I was thinking along those lines......My cable is 3 years+ old....lots of dirt, and the input jack is probably 27 yrs old. I´ll Let the tech look at it the next time I have it in for service. (Will be pretty soon, as we have some week and a half in beg. of july without gigs)

Baard

MJ Harnish · May 30th, 2003, 01:17 PM

If the amp hasn't had a cap job (I'll bet it has), it's due. You ought to have the tube sockets and all the jacks cleaned, and have the pots lubricated/cleaned as well. :)

May 29th, 2003, 04:01 PM	#1 (permalink)
Baard Tele-Holic Join Date: Mar 2003 Location: Denmark Posts: 668	Input jack problem ? On my SR yesterday the sound became weaker and thinner, so I wiggled the guitar cable a bit and touched it up at the amp, and got some loud crackle/pops. (More pop than crackle) Then i pulled tha jack out and put it back in and the problem was gone, i could not provoke it by touching the jack up at the amp again. Any Ideas what it could have been ? Baard

May 29th, 2003, 04:16 PM	#3 (permalink)
Wally Poster Extraordinaire Join Date: Mar 2003 Location: Lubbock, TX Posts: 6,010	Cable or jack? Baard, you could have aproblem with either the cable or the jack....more likely it is the jack. You may have a grounding problem with the jack's contact to the chassis or a piece of dirt may have gotten in the way of making good contact between the plug and the jack.

May 29th, 2003, 04:24 PM	#4 (permalink)
MJ Harnish Tele-Meister Join Date: Mar 2003 Location: Hattingen, Germany Posts: 457	Check the cable first since it's the most likely place a failure could occur. I would also clean the jacks since they probably could use it: Just squire a little contact cleaner (Caig De-Oxit is probably the best choice) into each jack and push a plug in & out a few times. If you're feeling ambitious, the best way to clean them is to pull the chassis and use a wire brush attachment on a dremel tool running at low speed; they'll look brand new after that. 8) However, be careful since you don't need to get shocked in the process. __________________ MJ Harnish Suburbs: Where they cut down all the trees and then name the streets after them.

May 30th, 2003, 01:13 PM	#5 (permalink)
Baard Tele-Holic Join Date: Mar 2003 Location: Denmark Posts: 668	ThaNKS ! Well I was thinking along those lines......My cable is 3 years+ old....lots of dirt, and the input jack is probably 27 yrs old. I´ll Let the tech look at it the next time I have it in for service. (Will be pretty soon, as we have some week and a half in beg. of july without gigs) Baard

May 30th, 2003, 01:17 PM	#6 (permalink)
MJ Harnish Tele-Meister Join Date: Mar 2003 Location: Hattingen, Germany Posts: 457	If the amp hasn't had a cap job (I'll bet it has), it's due. You ought to have the tube sockets and all the jacks cleaned, and have the pots lubricated/cleaned as well. :) __________________ MJ Harnish Suburbs: Where they cut down all the trees and then name the streets after them.

May 29th, 2003, 04:11 PM	#2 (permalink)
eryque Poster Extraordinaire Join Date: Mar 2003 Location: albany, ny [not chicago] Posts: 7,406 44 Photos	I've seen this sort of problem with all sorts of electronics that use plugs and jacks like this, sometimes it's just a dirty spot on the plug that hits a dirty spot on the jack at the point of contact. the surface where they touch is very small, so it ain't hard to cause some interference.

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