asteroids monitor woes :-( [was bz woes]

whilst theres vector chat... slim chance that someone may have a clue here

electrohome g05-802, (in an asteroids delux), picture drifts about 1 inch
off top of screen, then after about 6-8 minutes starts to buzz (from hv) and
the picture just becomes ghostly blurry glow... (then i switch off)..

replacing caps in the hv fixes prob, then again repeats after those 6-8
minutes (prior to this light hissing from hv)...

anyone any ideas?

thx
tom

on 4/10/01 2:03 pm, Mark Jenison at jenison@enteract.com wrote:

> On Wed, 3 Oct 2001, Anthony Ramos wrote:
>
>> Last night I fired up my BZ cabaret to burn-in a repaired boardset. An hour
>> or two later, there was no picture.
>>
>> Thinking the board failed, I put my working set back in; still no picture.
>> Then I noticed that, although the monitor still had yoke chatter and neck
>> glow, the high-pitched whistling/hissing sound I usually hear was gone.
>>
>> Does this mean my HV unit is dead? If so, how do I fix it? I've never had to
>> troubleshoot a B&W HV cage before. :-(
>
> If you have neck glow, chances are you HV transformer is ok at
> least. Most likely if its a problem with the HV unit, it turns out to be
> the HV diode. You could verify the HV with a HV probe, but most people
> don't have these (except us serious vector monitor repair nuts ;-))
>
> Oh, and cracked header pins on the deflection board's 10 pin connector can
> also produce this exact same scenario. Sometimes I forget to mention
> these common fixes because whenever I have a vector monitor in my
> posession, resoldering the pins, recapping the monitor, etc are standard
> operating procedures.

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Received on Thu Oct 4 07:59:36 2001