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Post subject: Dual showman reverb 135 Master volume push-pull pot
Posted: Sun Dec 07, 2014 5:45 am
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Hi to everyone. Recently my push-pull pot is not working properly any more and i think is't time to get new one, but i realy don't know where can i buy it or order it online. It is 1M pot and also is a picture of the pot below, i hope someone can help me and give a good answer, tnx in forward for your reply. Greetings from Bosnia


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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Sun Dec 07, 2014 8:29 am
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Rock Star
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Welcome to the forum. Try this place, I have always had very good luck with both below:

http://www.angela.com/

https://www.tubesandmore.com/

:mrgreen:

T2

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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Sun Dec 07, 2014 5:45 pm
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Rock Star
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Welcome! :mrgreen:

Here you go:

https://www.tubesandmore.com/products/R-VC1MA-PP

Hope that AES ships to Bosnia.

:)


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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Mon Dec 08, 2014 7:58 am
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Tnx for your reply. These are very usefull sites, but i didn't find it there what i need, pls more suggestions. :)


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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Mon Dec 08, 2014 3:00 pm
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Rock Star
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This one won't work? According to schematic it is the correct one. Which value do you need?

https://www.tubesandmore.com/products/R-VC1MA-PP


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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Tue Dec 09, 2014 9:40 am
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The value is ok, like mine 1M, but this one has just 3 pins below and 2 pins on the backside, my has 3 pins below, 1 pin one the side ( to make bridge with the capacitor)(see the pic) and 4 pins on the backside ( see the pic)

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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Tue Dec 09, 2014 10:59 am
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Rock Star
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That ceramic disc cap maybe soldered to a grounding point on the pot. Hard to tell.

Could you fashion this type to work?


http://www.ebay.com/itm/Potentiometer-C ... 3f29dd6dfc


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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Tue Dec 09, 2014 6:39 pm
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Aspiring Musician
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I don't think you'll find an exact replacement, unless someone decides to throw one up on e-bay for sale.

Looking at the schematic, it appears that it is a "J" taper 1meg pot with a tap, and a DPST switch. The way the schematic is drawn, the tap is not a center tap, but is something in between.

Is it the master volume control part that is not working or the pull boost part that is not working correctly? If it is the switch that is not working, you might be able to carefully dis-assemble it and retrofit a switch from another pot. Or carefully clean the pot and the switch with some De-oxit, and re-assemble.

Probably not what you wanted to read, but others here may have different ideas or suggestions.

JMHO,
vinyl

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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Tue Dec 09, 2014 7:20 pm
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There was a push-pull 1-meg ohm pot for MV Fender amps on EBay, for something like $75. Ad is gone, now. Crazy price.


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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Mon Dec 15, 2014 2:37 pm
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Tnx for your replies, i wasn't here on the site for few days, because something went wrong with my password after construction on this site, very bad. Here is a littlebit update about my pot. Here is one more pic, u will see the contact on the pot is gone, there are just a littlebit of the contact and this is the issue. I think the push pull part is ok, so acctually i need to change only this part of the pot. The value is ofcourse 1M Ohm. On the pic u can see the pins and forth for the bridge of the capacitor. So tell me now, am i right about this, can i just get this part of pot, or some other normal pot and take this part out and put in my push pull part ? Sorry for my bad english and i hope you understood me, :)

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Post subject: Re: Dual showman reverb 135 Master volume push-pull pot
Posted: Wed Dec 17, 2014 4:28 pm
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Aspiring Musician
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You might try this place in England:

http://www.blore-ed.com/products/index.php?title=Type_AR45

Looks like they can make you one that would come close to the original with tap and switch. Have no idea what it would cost, but since Bosnia is not in the EU, you can at least save that crazy 20% VAT.

vinyl


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