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Jim Wilkins[_2_] Jim Wilkins[_2_] is offline
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Default Power feed problem

"Snag" wrote in message ...

On 7/13/2020 5:25 PM, Michael Terrell wrote:
That sounds like a bad SCR.


OK , I don't know a lot about SCR's , but I have some experience with
electronics . How do I test it ? I was planning on starting by checking
the resistance of both sides of the control pot ... but I have no idea
how to test an SCR .
--
Snag
Illegitimi non
carborundum

===========================

A thorough test requires lab equipment to measure Off-state leakage current
at full working voltage and the minimum gate triggering current, but a
functional check is simple:
https://www.circuitstoday.com/how-to-test-an-scr

I'd suspect an intermittent pot wiper contact.