curt1988
Rookie Solder Flinger
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Post by curt1988 on Feb 22, 2007 8:03:09 GMT -5
:'(I've an Ibanex rx series strat, its been working fine since i bought it but today its just started acting very wierd. im not atall good with wiring or anything like that as i've never had problems with my guitars before. baisicly, i plug in and turn the amp on and then all i get is alot of feedback and when i touch anything metal on the guitar it gets worse, its not sumthing i can ignor and just play anyway, i opend it up just to feed my curiosity but there dosent seem to be any lose wires anywere thatneed soldering back on. if u could please help me out it would mean alot to me as its one of my fav guitars. please reply to my email if posible - grim_halloween@hotmail.co.uk
thanks alot. Curt.
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Post by dd842 on Feb 22, 2007 9:57:28 GMT -5
its been working fine since i bought it ..... alot of feedback and when i touch anything metal on the guitar it gets worse ..... there dosent seem to be any lose wires anywere ..... Hi Curt, and Welcome to GN2! When did you buy the guitar? i.e. has it been working fine for years ... or days? All of the noise almost sounds like the wires to the output jack may be reversed - but that does not explain why it would suddenly have become noisy ... do you have a younger sibling that happens to be good at electronics and likes to play tricks on you? Hang tight, Curt, someone will come up with something more useful than I am able to ... But I have to say, the reason I am responding to your question is that your question is the same one that led me to this forum in the first place. I had exactly the same symptoms as you describe (albeit self-induced ... I messed up my own wiring). And I have exactly the amount of electronics talent that you describe. In the end, I took the plunge and shielded and re-wired my guitar. It was challenging, but rewarding. So, there is at least one way to cure all that ails you and I know that you will get lots of support from a lot of great minds here. Dan P.S. That is just my two cents worth, and if you haven't already gathered this, it may not even be worth two cents, and I am not one of the great minds you should rely on when it comes to electronics.
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Post by UnklMickey on Feb 22, 2007 11:48:04 GMT -5
...and I am not one of the great minds you should rely on when it comes to electronics. well, not yet. but, that can change in time.
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curt1988
Rookie Solder Flinger
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Post by curt1988 on Feb 22, 2007 13:22:48 GMT -5
The guitar has been working fine for about 18 months now, was playing 1 night no problems picked her up the next day and as soon as i plugged it into the Marshall amp it had this problem as soon as you touch any metal part on the guitar it makes an awefull feedback noise. I know it's not the amp as my other guitars work fine on it and the same problem occurs on another amp I own. This could be something simple but I don't know? ??
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Post by dd842 on Feb 22, 2007 16:30:07 GMT -5
The guitar has been working fine for about 18 months now ..... as soon as you touch any metal part on the guitar it makes an awefull feedback noise. This could be something simple but I don't know? ?? Hi Curt, Well, it is a bit strange for that to happen after all this time. So I don't know either, but ... You are still getting sound out of the amp - albeit with unwanted noise - so, if everything else is working as usual (i.e. tone and volume pots), then unless someone else has a better guess, I would still be inclined to think that the one component that is suspect is the output jack. I say that because of the symptoms, and also because you use it each time you plug in the guitar. Could be that something has come loose - even if you don't see it - or it is just beginning to fail. If it were me, I would fiddle with that for a bit - basically make a note of where the wires are, unsolder them and start playing around: attach them as they were before (maybe something was just loose or misplaced) ; switch the wires to see if that makes the hum go away ; replace the output jack if necessary. In other words, start with the obvious (and hopefully least expensive) suspect and tinker a little bit. If that does not work, let the forum know and, based on your report of what did or didn't happen, I am sure you can receive more guidance on what to try or test next. I hope that helps. Dan
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Post by sumgai on Feb 23, 2007 0:55:02 GMT -5
...and I am not one of the great minds you should rely on when it comes to electronics. well, not yet. but, that can change in time.Yes, I too have noticed that I must clench my hand ever more quickly, as the Grasshopper reaches for the pebble! ;D sumgai
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Post by guitardoode on Feb 23, 2007 9:10:33 GMT -5
errm? Im afraid im completely lost... but what about potting the pickups? Arnt they supposed to wail about with annoying feedback when you put your hands over them when youve got a powerful distortion on your amp? Thats what happens to my unpotted ones.... =-S! Wish i could be a lotta better help -Guitar Doode
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Post by dd842 on Feb 23, 2007 10:00:27 GMT -5
well, not yet. but, that can change in time.Yes, I too have noticed that I must clench my hand ever more quickly, as the Grasshopper reaches for the pebble! ;D sumgai God bless you both Dan
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Post by dd842 on Feb 23, 2007 10:14:15 GMT -5
Wish i could be a lotta better help -Guitar Doode You and me both, Guitar Doode (*meaning I wish I also could be a lotta better help *) Interesting point on the potting. I have no personal experience with the phenomenon you describe. Do you happen to know if that is the kind of thing that could happen out of the blue (after a year and a half of trouble free wailing) or is it omnipresent until potted? Curt has admitted to being of limited skill when it comes to electronics, so if it's the latter, then I still think I personally would start with what would likely cause a sudden change in behavior. I figure that if it didn't happen before, and Curt isn't doing anything materially different than what he had been, he should start with (hopefully) simple stuff, see what happens, and go from there (e.g. look at potting). Now it's not just Curt that's learning. I'm learning too. Thanks for the input, Guitar Doode. Dan
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Post by JohnH on Feb 23, 2007 15:43:32 GMT -5
I think that dd is on the right lines, suspecting the output jack. Or even the guitar cord - test that first. with a broken wire, you can still get some sound, but all grounding goes to pot and nasty noises result.
The most valuable tool is a (cheap) digital multimeter, to check the continuity of your cords, and the resistance measured across the guitar output, using a good cord.
On a strat for example, you would find the resistance of the guitar at full volume is about 5-7k (for one coil selected), rising to about 120-130k as volume is reduced, then falling to zero at minimum volume. Thats a simple test that might reveal something.
John
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Post by dd842 on Feb 23, 2007 16:05:53 GMT -5
I think that dd is on the right lines, suspecting the output jack. Or even the guitar cord - test that first. with a broken wire, you can still get some sound, but all grounding goes to pot and nasty noises result. The most valuable tool is a (cheap) digital multimeter, to check the continuity of your cords, and the resistance measured across the guitar output, using a good cord. On a strat for example, you would find the resistance of the guitar at full volume is about 5-7k (for one coil selected), rising to about 120-130k as volume is reduced, then falling to zero at minimum volume. Thats a simple test that might reveal something. John Thanks, John I hadn't thought of the cord. Curt had already said he knows it's not the amp, as his other guitars work fine on it and the same problem occurs on another amp he owns. I only assumed that Curt uses the same cord with all of his guitars - I did not ask. You may have hit the nail on the head. Great idea with the multimeter. I remember that when Unk was helping me out last summer he was able to diagnose the problem (in my case, no output) based on a number of readings. Curt - if you buy a multimeter, please take the following advice from someone far more knowledgeable than I am (which could be just about anybody here! ): Dan first one "don't" about that meter. don't ever measure current, until you REALLY understand that meter. measuring current across a voltage source, even a flashlight battery will pop the fuse inside the meter. (your guitar won't pop the fuse, but it can't produce enough current to measure anyway) you probably have more than 2 places to connect the probes on the meter. one of them will likely be marked: COM or common. another will be marked Volt/Ohms or Volt/Ohms/mA. those are the 2 you will need to measure resistance.(the kind and knowledgable gentleman was none other than Unk)
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Post by UnklMickey on Feb 23, 2007 17:39:21 GMT -5
errm? Im afraid im completely lost... but what about potting the pickups? Arnt they supposed to wail about with annoying feedback when you put your hands over them when youve got a powerful distortion on your amp? Thats what happens to my unpotted ones.... =-S! Wish i could be a lotta better help -Guitar Doode hi Guitar Doode, i think what confused you here, was the term " feedback". if that was the problem, your diagnosis would be right on the mark. but, Curt incorrectly used feedback, to mean hum and noise. at least that's what we are all assuming he meant. the fact that it got worse, when metal was touched, was the clue. we're used to seeing that sort of thing here. i think it would have been less confusing for the discussion, if that assumption was mentioned. don't let this sort of thing stop you from entering into a discussion in the future. even on this one, you might actually have it right. we'll know more when we hear back from Curt.
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