V2000 blooming - always the HV diode?

modessitt

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Looking at a V2000 in an Asteroids Deluxe. This monitor was repaired by me about 3 years ago, and came in with a blown 1-amp fuse. I fixed that issue, and pic is up looking nice. We left it on the rest of the day, and later my boss said it was blooming and shut it off before I could see it.

Today, I pulled the monitor, inspected the HV and deflection sections, and have it running on my bench (connected to the cab), but after an hour so far it is not blooming at all.

All of my research into blooming points to the HV diode. It looks okay, and I don't feel like trying to remove the insulation on the ends just so I can test it. But would a bad HV diode work perfectly for hours, then suddenly go haywire? The time it supposedly took to bloom made me think something heat-related.

Of course, this is assuming that the problem was diagnosed properly.

Anybody else ever have a blooming issue that was caused by something other than the HV diode?
 
It was mentioned to me that it could be a bad connection or insultation grease on the diode. Mine doesn't bloom until someone goes to play it, so I'm thinking the vibration causes it.
 
So, it ran fine on my bench for 3 hours. I decided to put it back in the cab and put the back door on, to see if maybe it would heat up more that way. I played about 10 games on it, and it seemed fine. Walked away for 10 minutes, then came back and it's bloomed.

I guess I'll order an HV diode and go from there...
 
I know that the -802 and the v2000 boards are fairy interchangeable, but will an -801 HV cage work with a V2000 deflection board?
 
HV diode

Anybody????

I have had one take 5 hours before it started blooming. It did it 2 days in a row. Replaced the hv iode and it never did it again. All the ones before that with blooming would act up in an hour or less.

I have substituted V2000 HV cages for 802s and vice versa. Due to the extra power stuff on an 801 I never even considered trying one of those.
 
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