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  #1  
Old 10-28-2016, 03:43 AM
Jon A.'s Avatar
Jon A. Jon A. is offline
Don't mess with Esther.
 
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So I don't need one with a plastic shaft? Also, the "35 meg" indicates 350k ohms, correct? I've been looking for a suitable replacement for many hours and it's been very frustrating.
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Old 10-28-2016, 09:02 AM
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Quote:
Originally Posted by Jon A. View Post
So I don't need one with a plastic shaft? Also, the "35 meg" indicates 350k ohms, correct? I've been looking for a suitable replacement for many hours and it's been very frustrating.
In the case of focus pots the ones that look like normal pots
are almost all plastic cause there is 6KV on them. There are
also newer styles. A pix of it would help.

When you see "meg" add 6 zeros to it so 35 meg is 35,000,000
ohms or 35 million. 350k add 3 zeros so 350,000 ohms.
35 meg sounds high maybe its 3.5 meg ??

73 Zeno
LFOD !
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Old 10-28-2016, 03:33 PM
Jon A.'s Avatar
Jon A. Jon A. is offline
Don't mess with Esther.
 
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Location: Canada
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I may need the schematic. I've been googling like mad trying to figure this out.

Unfortunately I tossed the original control *very* recently. However, I took photos of the nearly identical control in my Electrohome console. The biggest difference in its appearance is how it's adjusted. The Sylvania unit had a short shaft.

No value on the Electrohome's control, but the schematic says 17M5. Not sure what that means either.
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Last edited by Jon A.; 10-28-2016 at 10:17 PM.
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Old 10-28-2016, 03:36 PM
Jon A.'s Avatar
Jon A. Jon A. is offline
Don't mess with Esther.
 
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Found two on eBay that are physically identical to the Sylvania unit.

http://www.ebay.com/itm/221372494259

http://www.ebay.com/itm/391167737957

Last edited by Jon A.; 10-28-2016 at 10:17 PM.
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  #5  
Old 10-29-2016, 12:36 PM
zeno's Avatar
zeno zeno is offline
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meter the old one. if its 5 meg you can measure it.
If 35 meg probably not. The 35 meg would have a printed
resistor on it as part of a divider. Of course thats if its not
wide opened. You can also measure with a HV probe.
One end will have apx 7KV DC center 6KV other end
probably much less than 5KV.

73 Zeno
LFOD
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