Question about Epiphone Limited Edition Wilshire Pro Electric Guitar Ebony

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I thought I had a bad guitar cable. Then, I thought the 1/4' output jack was loose. Now I think the 3 way switch is bad. I have a very scratchy annoying sound that happens in all the 3 way positions. I have split coil pots. Also, the neck pickup can't be heard in the middle position.

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It seems that your 3-way switch is suffering from bad contact. Well, there are three things you can do:

1 - Take the guitar to a service representative and have it repaired,
2 - If you are proficient in the use of a soldering iron, you could desolder it from your guitar and replace it for a brand new one (do not forget to take notes of the cable colors and where they are soldered before removing it), and
3 - Try using a contact cleaner spray to clean its contacts.

The contact cleaner spray is a spray can filled with special formulated chemicals and/or gases that helps cleaning the switch and pot contacts. It generally comes with a thin tube that allows you to insert its tip inside the switches or potentiometers and spray its contents exactly where it is needed. While spraying, move the switch rocker or potentiometer cursor from one side to the other, allowing the fluid to clean the contacts, removing any debris that might be located there and originating the bad contacts that may be causing the scratchy noise you hear..

These contact cleaner sprays can be found in most hardware stores, electronics dealers, and hobby shops or even in the Internet, from different brands (3M, Polywater, MGC chemicals, CRC, etc ).

Hope this may help you put your Epiphone to scream loud and clear again...

Posted on Mar 31, 2011

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I want you to do a test: With a set of headphones plug them into the preamp output and then play your guitar... don't expect much loudness, it may be very faint and will ONLY be in one of the sides of the headphones. This tests the preamp section... have the guitar volume wide open.

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There will be a number on the side of the pot that will have the resistance and taper... It is likely an "A" taper which is an audio log taper.

Replacing this involves removing about the right 1/3 of knobs, screws, and jack mounting nuts and washers to remover the circuit board the pot is mounted on.

There are connecting cables to be removed.

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BEFORE any of this is done, you should investigate to make sure it is the fader. If the left channel is intermitent scratchy then the fader is likely bad, These will get scratchy before they fail... If that is not the scenario, then there probably is something else bad.

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