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Author Topic: Capacitors - wrong orientation? (Read 435 times)

Offline Allf

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Re: Capacitors - wrong orientation?
« Reply #15 on: 2020.September.18. 19:44:28 »

I would suggest looking at the waveform on an oscilloscope by inserting bipolar capacitance. Maybe it would be closer to the answer.

Offline elmer

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Re: Capacitors - wrong orientation?
« Reply #16 on: 2020.September.19. 22:49:58 »
On a working EP, with the ground clip of an oscilloscope probe connected to the right side of C2 (0V) and the tip connected to the left side of C2, there is approx -1v across the capacitor ie. the right side is more positive than the left side. Except for a few ms at powerup :oops: which might explain why C2 is a common failure.

Thank you for running this test ... and I assume that you really mean C9 and not C2! :)

Offline BruceTanner

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Re: Capacitors - wrong orientation?
« Reply #17 on: 2020.September.19. 22:58:38 »
... and I assume that you really mean C9 and not C2! :)
:lol: yes indeed! :oops:  I had TR2 in my brain... C9 & TR2 - must be the most common EP failure! :roll: