¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: TDS460A Will not turn on?


 

Chuck,

Sorry, I was not at all clear, I should not have used the term "continuity" as I am using the Diode Test function on my DMM.

To be precise:

IC7 is open (infinity) in one direction (Red on Pin 2 and Black on Pin 1) and the meter reads 1.305 (volts) in the other direction (leads reversed from previous).

IC2 reads .512 (volts) in BOTH directions.

One thing that I have learned is that when two supposedly identical devices test so differently, using the same test instruments, there is a good chance that one of the two is defective.

I have also seen two posts on different web pages that have pointed to optocoupler failures on this particular power supply.

Does this alter your assessment of the situation?

I am always suspect of my knowledge and abilities, NOT questioning anything that you are trying to convey to me.

I appreciate your response and your patience.

Sincerely

--
Michael Lynch
Dardanelle, AR

Join [email protected] to automatically receive all group messages.