HV diode sizzling...

Jeff F

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Donor 12 years: 2011-2022
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Replaced the HV diode in one of our monitors yesterday and I can't get the damn thing to stop "sizzling". I cleaned the connectors real good and put a dab of dielectric grease in them but for some reason the grease will sizzle. I figured it was a bad connection so I cleaned it again and made sure everything was just about perfect but after a minute or two... sizzle, sizzle, sizzle.

I'm thinking the boot on that side of the diode may be bad(maybe the spring inside the boot is not connected well to the wire?)... anybody ever cook grease before?

I'm trying to come up with options to replace the boot without having to scavenge parts from a spare monitor but I'm coming up blank here... any ideas?

TIA, :beerchug:
Jeff
 
Does anyone hard wire these? I have a b&w vector monitor, where the HV diode looks nasty and the point of contact spring thing looks like it wouldn't make a decent connection now. Should I solder it?
 
Be sure the body of the diode is clean and doesn't have any greasy goo on it - it could be arcing across the diode.

Turn out all the lights and see if you can see where it's arcing.

-Ian
 
At this point you probably have plenty of dielectric grease in both boots just clean the diode real well, including both tips, put it back together without adding anymore grease. I would not solder it.
 
I looked for arcs last night but couldn't see any. I'm going to try to clean the diode off real well and then see what I get.

Thanks for the ideas. :beerchug:
 
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