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pot meters [message #29281] Thu, 27 June 2024 17:03 Go to next message
Benno is currently offline  Benno
Messages: 3
Registered: June 2024
Junior Member
Hello all,
I need to replace the 15 kOhm volume pot on a KUSTOM 100-2, but it is very difficult to find. Most of all because of the 5/8"threaded bushing.
Any suggestions?
Thanks,
Ben

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Re: pot meters [message #29282 is a reply to message #29281] Thu, 27 June 2024 18:07 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4773
Registered: June 2004
Location: NY
Senior Member
Is the pot physically ok, just very scratchy and intermittent even after flushing it out well with cleaner?
Do you have the pot removed from the board?

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Re: pot meters [message #29283 is a reply to message #29281] Sun, 30 June 2024 08:35 Go to previous messageGo to next message
Benno is currently offline  Benno
Messages: 3
Registered: June 2024
Junior Member
I removed the potmeter and opened it. One slider runs fine between o and 15k. The other slider sticks to 15 k till half way. The  carbon track is damaged.
Again, where to find a 15k potmeter with a long bushing?

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Re: pot meters [message #29284 is a reply to message #29281] Sun, 30 June 2024 10:26 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4773
Registered: June 2004
Location: NY
Senior Member
They are near impossible to find these days.

Sometimes if you’re very careful you can bend the wiper over just enough to ride on untouched resistance trace.

I have a 10K out of a K300 pA I can send you?

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Re: pot meters [message #29285 is a reply to message #29284] Sun, 07 July 2024 16:31 Go to previous messageGo to next message
Benno is currently offline  Benno
Messages: 3
Registered: June 2024
Junior Member
Thank you.
I found a new 3/4" bushing 25kOhm potmeter.
Simulating with TINA, we saw that R102 had to go from 10 kOhm to 15 kOhm to keep the feedback.
Result is just perfect.

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Re: pot meters [message #29286 is a reply to message #29281] Mon, 08 July 2024 06:03 Go to previous message
stevem is currently offline  stevem
Messages: 4773
Registered: June 2004
Location: NY
Senior Member
Good and nice ofyou to pass along this info!👍

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