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| Burnt Fingers DIY Effects Building or modding your own Effects and Stompboxes? Then use this forum to discuss the process and show your pride and joy. |
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#1 (permalink) |
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Tele-Meister
Join Date: Mar 2011
Location: Lethbridge, Alberta, Canada
Posts: 417
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how do i properly test a 3pdt switch?
Hi everyone, i used the search to look for an answer but didn't find anything, so hopefully i'm not asking this question for the millionth time.
i'm very new to electronics/pedal mods. I'm attempting the true bypass mod on my gcb-95. the 3pdt swtich came in the mail today. I got out the continuity tester, and it tells me lugs 1 and 4 are connected, 2 and 5, and 3 and 6. when i hit the switch, absolutely nothing changes. those same lugs remain connected. and no matter what position the switch is in, lugs 7, 8, and 9 are at no time making any connections with any of the other lugs. Anyone have any advice? am i doing this completely wrong? i hope i'm not coming off as idiotic. i feel dumb asking, but how else am i gonna learn? any replies are appreciated. thanks, friends! p.s. just for the sake of clarity, i am looking the switch so that the lugs are horizontal, and i'm considering the top row, left to right, as 1,2,3 etc... |
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#2 (permalink) |
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Friend of Leo's
Join Date: Jan 2011
Location: Between Fullerton and Bakersfield
Posts: 3,263
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Sounds like you're doing it right -- you should get continuity on 1-4 2-5 3-6 or 4-7 5-8 6-9. Sounds like a bad switch.
Gotta ask the obvious question: Are you getting a big definite click when your press the switch?
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Mostly Harmless |
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#3 (permalink) |
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Tele-Afflicted
Join Date: Sep 2009
Location: Stockholm,Sweden
Age: 61
Posts: 1,246
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I suspect the switch too.Have you double checked the solder joints to the switch?
Here is a good page that shows the lugs numbering and which ones that will be connected in on and off position.(You will have to scroll down a bit).I think you have got them right but it doesnīt hurt to check before you write off the switch as baaad! Good luck! http://www.freestompboxes.org/viewto...p?f=48&t=14671 P.S. If I have understood you,the problem is that you canīt get any continuity between 4 and 7, 5 and 8, 6 and 9? Last edited by limbe; April 25th, 2012 at 08:32 AM. |
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#4 (permalink) |
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Tele-Holic
Join Date: Feb 2008
Location: Tustin, CA
Age: 39
Posts: 528
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Did you already do some soldering or attempt to do soldering on this switch?
As was mentioned, you should hear a click. Inside, there is a little see-saw piece of metal that flips back and forth as you depress the switch. No click means the see-saw is not changing the position. I recently had to fix a pedal for a friend who tried to fix an issue. He over-heated the switch and the metal contacts moved. The result was the little see-saw inside was stuck in one position. I was able to undo the damage. But, don't overdo it when soldering. |
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#5 (permalink) | |
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Tele-Meister
Join Date: Mar 2011
Location: Lethbridge, Alberta, Canada
Posts: 417
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Thanks for the replies!
there wasn't any big definite click when i pressed the switch down. i was thinking maybe it was just the smoothest switch i've ever encountered, but that seems to be the culprit. I have not done any soldering at all yet to the switch. i figured since i got it off ebay i should first check if there are any problems before getting to work. Quote:
i guess i'll contact the ebay seller and see if we can't resolve this issue. Thanks for you input everyone! |
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#6 (permalink) |
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Tele-Afflicted
Join Date: Sep 2009
Location: Stockholm,Sweden
Age: 61
Posts: 1,246
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Thanks for making me laugh by being polite and calling me sir! I know Iīm sixty but it is the same guy in Levis and a T-shirt who likes good Telecasters and nice girls in my own age group who is sitting here.In thirty years you will know! Thanks again!
P.S. Despite your claim to being a newcomer,you did everything right,including checking the switch before you did any soldering. |
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#7 (permalink) | |
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Tele-Meister
Join Date: Mar 2011
Location: Lethbridge, Alberta, Canada
Posts: 417
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Quote:
just as an update, i talked to the ebay seller, and he's sending a replacement switch. so hopefully in a couple weeks i'll have a true bypass wah pedal. Thanks for the input, everyone! |
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