Members hare.29 Posted July 2, 2005 Members Share Posted July 2, 2005 Ok, so I have a Ibanez GRX20L with 2 humbuckers, tone, vol, and a 3-way. With the 3-way in the neck position, the guitar is dead. With the switch in the middle, however, both the bridge and neck pickups work (and with the switch in bridge, the bridge pickup works). None of the wiring is loose, but I can't see into the switch to see if it's not making contact. Should I just replace the switch? Thanks. Link to comment Share on other sites More sharing options...
Members Pepi Posted July 2, 2005 Members Share Posted July 2, 2005 You need a VOM to check the pup switch. I think you probably have already hit the nail on the head through Switches don't cost much either. Link to comment Share on other sites More sharing options...
Members nevermind Posted July 2, 2005 Members Share Posted July 2, 2005 You might give it a shot of contact cleaner and see if that doesn't solve the problem. Link to comment Share on other sites More sharing options...
Members jrfan Posted July 2, 2005 Members Share Posted July 2, 2005 Since your neck pickup works with the switch in the middle position its probably the switch. The only real way to check your switch is with a multimeter that will read in ohms to check for continuity across the switch in diffferent positions. First thing to try is spray contact cleaner in the switch. If that doesn't fix it, replace the switch. Link to comment Share on other sites More sharing options...
Members hare.29 Posted July 2, 2005 Author Members Share Posted July 2, 2005 Thanks for the prompt responses. I pulled out the multimeter and measured the resistance across the switch. With the switch in the center, I get 4.75 kOhms at all three connections (neck pup, vol pot, bridge pup). At the bridge position I get 9.4kOhms for the neck wire, and 9.6 at the other two. At the neck position, I get 9.4kOhms for the neck wire, .4MOhms (!) at the vol wire, and 9.8 kOhms at the bridge. I'm assuming that's where my problem lies. I'll try to dig out some contact cleaner and give it a shot. Link to comment Share on other sites More sharing options...
Members jrfan Posted July 2, 2005 Members Share Posted July 2, 2005 This link is for the wiring diagram for your guitar.http://www.ibanez.com/wiring/wire.asp?y=2002&w=GRX20 Check for continuity (the meter should read zero ohms or close to it)between the switch lug going to the volume pot and the lug going to the neck pickup white or positive lug with the switch in the neck position. If the meter doesn't zero the switch is bad. Link to comment Share on other sites More sharing options...
Members hare.29 Posted July 2, 2005 Author Members Share Posted July 2, 2005 The switch doesn't zero there, any cleaning it hasn't helped, so it's off to get a replacement. Whee. Thanks a lot. Link to comment Share on other sites More sharing options...
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