el cheapo
Friend of Leo's
To replace a two pronged power cord with a a three pronged cord? My SS Peavey Audition 110 came with a two pronged cord and it hums too much.
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Thanks!
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Thanks!
How big a deal is it...
- Thread starter el cheapo
- Start date
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jh45gun
Banned
You sure some one did not break the ground off? That is too new of an amp not to have a three prong plug. I would suspect either the ground lug got taken off or some one put a two prong plug on a three wire cord. I have never seen a PV with a two prong plug. If I am correct than it would be simple to wire a new plug on the cord.
el cheapo
Friend of Leo's
Yeah.... I don't know about that. Here's the cord with the plug.
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The amp came with an old repair ticket from Sam Ash Music...
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Something about a 10' patch cable there.
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The amp came with an old repair ticket from Sam Ash Music...
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Something about a 10' patch cable there.
Stubee
Doctor of Teleocity
It is not a big deal & having owned a Bandit & other PV amps back in the '80s think some guy replaced the plug. Put a grounded plug on it.
jh45gun
Banned
Yep as I thought looks like some one replaced the plug if you look there is that tab on the top of that plug pry that up and that locks the plug on the wires. I bet some one cut the green ground wire flush with the insulation and put on that two prong plug. Easy fix just get a three prong plug and replace that two prong one. Cut the wires off that are exposed and re cut the insulation exposing all three wires and rewire the plug.
el cheapo
Friend of Leo's
You mean this might be an easy fix? Perish the thought!
jefrs
Doctor of Teleocity
I feel I need to point out this is safety advice, not legal advice.
Our UK regulations are driven by various international standards (ISO & IEC), which are in effect throughout the world, especially in Europe and North America. You will have similar/reciprocal standards and regulations.
In the UK, there are several regulations (laws), standards and approved codes of practice (ACoP) relating to this -
http://www.pat-testing.info/legal.htm
- pretty much all of the health and safety regulations relate to the work environment, which might for instance include an amplifier used professionally. However the electrical standards are also applicable where supplied for use in the home
http://www.hse.gov.uk/electricity/standards.htm
Now there is a distinction made between Class 1 and Class 2 equipment -
http://www.pat-testing.info/frequency.htm
- and this relates to whether the equipment should have an earth connection.
Basically this says Class 1 needs an earth and Class 2 does not.
The way this is interpreted is, that if an appliance has any part of its metal chassis exposed to the user, then it must be earthed, and is Class 1. Class 2 would be where would be impossible for the user to touch any part of the chassis at any time, which includes "double insulated".
The jack sleeve of a guitar cord is directly connected to an amplifier chassis, and to the exposed metal hardware of the guitar, which the user holds. Therefore it is Class 1 and must be earthed.
Now you are unlikely to receive a powerful shock from solid state electronics, there is probably only 70VDC across it. However there is a mains transformer clamped to the chassis, therefore the appliance should be earthed, because you are effectively holding the chassis with an electric guitar, and because a fault on that transformer might place mains on the chassis.
With solid state amplifiers, it is probably worthwhile checking inside the amp that the mains electrical connections do actually include an earth bond post to the chassis. Some amps such as the Roland Cube are labelled as "double insulated" (which they are emphatically not) are supplied with earthed mains cord and 3-pin plug, but lack any earth connection inside the amp, despite having their transformer electrically connected to the "exposed" chassis thereby forming a ground connection (in the UK we make a distinction between the local "ground", the bit you are holding, and the "earth", the bit the mains is connected to).
Summary - all guitar amps should be properly earthed.
Our UK regulations are driven by various international standards (ISO & IEC), which are in effect throughout the world, especially in Europe and North America. You will have similar/reciprocal standards and regulations.
In the UK, there are several regulations (laws), standards and approved codes of practice (ACoP) relating to this -
http://www.pat-testing.info/legal.htm
- pretty much all of the health and safety regulations relate to the work environment, which might for instance include an amplifier used professionally. However the electrical standards are also applicable where supplied for use in the home
http://www.hse.gov.uk/electricity/standards.htm
Now there is a distinction made between Class 1 and Class 2 equipment -
http://www.pat-testing.info/frequency.htm
- and this relates to whether the equipment should have an earth connection.
Basically this says Class 1 needs an earth and Class 2 does not.
The way this is interpreted is, that if an appliance has any part of its metal chassis exposed to the user, then it must be earthed, and is Class 1. Class 2 would be where would be impossible for the user to touch any part of the chassis at any time, which includes "double insulated".
The jack sleeve of a guitar cord is directly connected to an amplifier chassis, and to the exposed metal hardware of the guitar, which the user holds. Therefore it is Class 1 and must be earthed.
Now you are unlikely to receive a powerful shock from solid state electronics, there is probably only 70VDC across it. However there is a mains transformer clamped to the chassis, therefore the appliance should be earthed, because you are effectively holding the chassis with an electric guitar, and because a fault on that transformer might place mains on the chassis.
With solid state amplifiers, it is probably worthwhile checking inside the amp that the mains electrical connections do actually include an earth bond post to the chassis. Some amps such as the Roland Cube are labelled as "double insulated" (which they are emphatically not) are supplied with earthed mains cord and 3-pin plug, but lack any earth connection inside the amp, despite having their transformer electrically connected to the "exposed" chassis thereby forming a ground connection (in the UK we make a distinction between the local "ground", the bit you are holding, and the "earth", the bit the mains is connected to).
Summary - all guitar amps should be properly earthed.
el cheapo
Friend of Leo's
A friend from Boy Scouts will help me with the plug/cord, if I can bring some deer bologna to our winter camp out! He knows how to wire all kinds of stuff, and has all the tools and materials we will need. Plus he'll let me watch!
He knows how to wire all kinds of stuff, and has all the tools and materials we will need. Plus he'll let me watch!jh45gun
Banned
Should be very easy fix just take off the old two prong plug and I am positive the cord is a three wire cord so get a grounded plug and wire it accordingly.
el cheapo
Friend of Leo's
Good Call!
This amp had a two pronged plug and a two wired cord! The fellow I bought it from mentioned it had been worked on. I don't know why anyone would have put an ungrounded cord on an amp, but that's what happened.
After installing a proper grounded cord with a three pronged plug the amp is much quieter. Problem solved, and thanks guys!
jh45gun
Banned
Unreal that some one would do that in this day and age.
SamClemons
Poster Extraordinaire
It would be a good place to start, but that will probably not fix you hum issues.
el cheapo
Friend of Leo's
Scotty 2
Tele-Holic
That wide blade serves as ground also,,should work ok??? I would think??
el cheapo
Friend of Leo's
I tested it out today...
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Ran it through my Mesa 1x12 cab and it sounds really good! I had the house to myself and used my SXquire. Turned it up good and loud, played it with all my pedals, etc. MUCH quieter than it was before, and no funky popping/clicking noises when I touch the strings. This baby is ready to go!
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Ran it through my Mesa 1x12 cab and it sounds really good! I had the house to myself and used my SXquire. Turned it up good and loud, played it with all my pedals, etc. MUCH quieter than it was before, and no funky popping/clicking noises when I touch the strings. This baby is ready to go!
SamClemons
Poster Extraordinaire
Great.
