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Posted: Tue Apr 21, 2009 5:23 pm
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Twelvebar wrote:
Ignore everyone who suggests it might not be a big deal. take both amp and guitar to be checked out by a qualified technician. People have died from electrical shock from guitars. Even if it turns out to be nothing serious, it is worth it to know for sure that it is safe.


+1 8)

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Posted: Tue Apr 21, 2009 7:46 pm
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I would love to hear someone tell me how a person can get electricuted with there guitar through a modern amp. I know how it can happen with amps from the 50's and early 60's thru a guitar and even what causes it.
Now small shocks and such do to guiatr ground problems and even static as Chet has talk about in the past but electricuted. Well if put your hand in the amp and have not discharged the caps :shock: that will get ya if you touch the wrong thing. You will think you been sucking on a roll of nickles even when you recover. Ouch!!!!

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Posted: Tue Apr 21, 2009 9:38 pm
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Even on modern amps with polarized power cords you are still using high voltage current and no matter how slim the odds you're always better safe than sorry. Get you equipment checked. It's not worth a serious injury or death not to.


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Posted: Tue Apr 21, 2009 10:06 pm
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Get the amp checked, not the guitar.

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Posted: Tue Apr 21, 2009 10:13 pm
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Read this:

http://www.guitarnuts.com/technical/ele ... /index.php

get your gear checked out, err on the side of caution.

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Posted: Wed Apr 22, 2009 7:46 am
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Twelvebar wrote:
Read this:

http://www.guitarnuts.com/technical/ele ... /index.php

get your gear checked out, err on the side of caution.

Yes but when plugiing in a three prong cord if wired proper in can't happen its when old amps had no ground and two prong cords the had the same progs on both sides. That caused you to be able to plug a guitar amp in with the cord either way, in doing so what you have as the low side or neutral could in effect be hot. They got around this by using a resistor cap combination which caused enoungh resistence to block the power going to the guitar and when the old wax caps went up look out :shock:

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Last edited by cvilleira on Wed Apr 22, 2009 8:18 am, edited 1 time in total.

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Posted: Wed Apr 22, 2009 7:54 am
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cvilleira wrote:
Twelvebar wrote:
Read this:

http://www.guitarnuts.com/technical/ele ... /index.php

get your gear checked out, err on the side of caution.

Yes but when plugiing in a three prong cord if wired proper in can't happen its when old amps had no ground and two prong cords the had the same progs on both sides. That caused you to be able to plug a guitar in with the cord either way, in doing so what you have as the low side or neutral could in effect be hot. They got around this by using a resistor cap combination which caused enoungh resistence to block the power going to the guitar and when the old wax caps went up look out :shock:


Not impossible if the house wiring is bad.

And don't think it can't be. I've done electrical work in every house i've lived in, and you wouldn't believe the crap I've seen left behind, either by unlicensed electricians or homeowners who maybe shoulda read a book or something.

Also, it could just be a static charge. But I wouldn't want my epitaph to read, "But it didn't seem all that serious..."


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Posted: Wed Apr 22, 2009 8:09 am
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SlapChop wrote:
cvilleira wrote:
Twelvebar wrote:
Read this:

http://www.guitarnuts.com/technical/ele ... /index.php

get your gear checked out, err on the side of caution.

Yes but when plugiing in a three prong cord if wired proper in can't happen its when old amps had no ground and two prong cords the had the same progs on both sides. That caused you to be able to plug a guitar in with the cord either way, in doing so what you have as the low side or neutral could in effect be hot. They got around this by using a resistor cap combination which caused enoungh resistence to block the power going to the guitar and when the old wax caps went up look out :shock:


Not impossible if the house wiring is bad.

And don't think it can't be. I've done electrical work in every house i've lived in, and you wouldn't believe the crap I've seen left behind, either by unlicensed electricians or homeowners who maybe shoulda read a book or something.

Also, it could just be a static charge. But I wouldn't want my epitaph to read, "But it didn't seem all that serious..."

That can contribute to it as well on old amps but with modern amps and the use of the power transformers wiring eliminates that factor. And even when using a rectifier tube if the resistor at the imput is ok you would be fine.

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Posted: Wed Apr 22, 2009 8:47 am
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Were you playin barefoot on a carpet floor, as I used to get those static shocks sometimes playing on it.But if you got juiced or even if you didnt have it looked at as it is going to always be on your mind and thats no way to have to play.


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Posted: Wed Apr 22, 2009 12:46 pm
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I ,as someone that has been severly burned by faulty "modern electronic" equipment, implore you once again to get your gear checked. It is not impossible to get shocked by newer gear just less likely due to polarized cords and other changes over the years. Trust me, it hurts like hell and if it doesn't kill you there will be scars and other effects that stick with you for a long time.


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Posted: Wed Apr 22, 2009 1:17 pm
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cvilleira wrote:
SlapChop wrote:
cvilleira wrote:
Twelvebar wrote:
Read this:

http://www.guitarnuts.com/technical/ele ... /index.php

get your gear checked out, err on the side of caution.

Yes but when plugiing in a three prong cord if wired proper in can't happen its when old amps had no ground and two prong cords the had the same progs on both sides. That caused you to be able to plug a guitar in with the cord either way, in doing so what you have as the low side or neutral could in effect be hot. They got around this by using a resistor cap combination which caused enough resistence to block the power going to the guitar and when the old wax caps went up look out :shock:


Not impossible if the house wiring is bad.

And don't think it can't be. I've done electrical work in every house i've lived in, and you wouldn't believe the crap I've seen left behind, either by unlicensed electricians or homeowners who maybe shoulda read a book or something.

Also, it could just be a static charge. But I wouldn't want my epitaph to read, "But it didn't seem all that serious..."

That can contribute to it as well on old amps but with modern amps and the use of the power transformers wiring eliminates that factor. And even when using a rectifier tube if the resistor at the imput is ok you would be fine.
Cvill assuming there are no serious issues with the wiring in his equipment you are right.

But I have seen some seriously dangerously miswired crap through the years. Although you are most likely right that there is no danger, i think it would be prudent to get stuff checked out. the third prong becomes a decoration if there is a break in the circuit path. Whether it's a broken wire, a bad solder connection etc. Really cockeyed wiring can turn the ground into part of the live circuit. If I ever got a shock from my gear, i would have my multi-meter out in a heartbeat. But if someone doesn't know how to diagnose problems with their circuitry, I would rather they get it checked out, than ignore it.

A friend's hyper expensive home theater unit started on fire a couple weeks ago, because of some bad electronics. It is just lucky he was home watching a movie, because that system was primarily used by his kids for watching movies, and playing games, on the weekends he has them.

I just like to be super careful, when there is potential for serious harm, no matter how remote we think it is.

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Post subject:
Posted: Wed Apr 22, 2009 1:46 pm
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Twelvebar wrote:
cvilleira wrote:
SlapChop wrote:
cvilleira wrote:
Twelvebar wrote:
Read this:

http://www.guitarnuts.com/technical/ele ... /index.php

get your gear checked out, err on the side of caution.

Yes but when plugiing in a three prong cord if wired proper in can't happen its when old amps had no ground and two prong cords the had the same progs on both sides. That caused you to be able to plug a guitar in with the cord either way, in doing so what you have as the low side or neutral could in effect be hot. They got around this by using a resistor cap combination which caused enough resistence to block the power going to the guitar and when the old wax caps went up look out :shock:


Not impossible if the house wiring is bad.

And don't think it can't be. I've done electrical work in every house i've lived in, and you wouldn't believe the crap I've seen left behind, either by unlicensed electricians or homeowners who maybe shoulda read a book or something.

Also, it could just be a static charge. But I wouldn't want my epitaph to read, "But it didn't seem all that serious..."

That can contribute to it as well on old amps but with modern amps and the use of the power transformers wiring eliminates that factor. And even when using a rectifier tube if the resistor at the imput is ok you would be fine.
Cvill assuming there are no serious issues with the wiring in his equipment you are right.

But I have seen some seriously dangerously miswired crap through the years. Although you are most likely right that there is no danger, i think it would be prudent to get stuff checked out. the third prong becomes a decoration if there is a break in the circuit path. Whether it's a broken wire, a bad solder connection etc. Really cockeyed wiring can turn the ground into part of the live circuit. If I ever got a shock from my gear, i would have my multi-meter out in a heartbeat. But if someone doesn't know how to diagnose problems with their circuitry, I would rather they get it checked out, than ignore it.

A friend's hyper expensive home theater unit started on fire a couple weeks ago, because of some bad electronics. It is just lucky he was home watching a movie, because that system was primarily used by his kids for watching movies, and playing games, on the weekends he has them.

I just like to be super careful, when there is potential for serious harm, no matter how remote we think it is.

I agree with you if you don't no what you are doing get it checked out by someone who does. I have utmost respect of electricity I spent many years in my rigging job working on towers doing eletrical work 1982 I finished My apprenticeship and have kept My licence current for the University to do the tower work. I have see the worst that can happen from it as well so I no what you mean. I have been bit before the worst was by a 480volt 3phase duct heater and it through me back an down a ten foot drop turn my hand black and blue and burned me and I tasted it for a day.
I don't mean to come off as like no biggy it just the nature as to what I am used to. People used to tell me I was crazy climbing and doing tower work but hay just another job. The only ones I did not like were some of the overseas job because of thing out of our control.

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Thomas Jefferson


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