Re: TECH: Battlezone G05-805 monitor - still having problems

There might be harmonics on the regulated HV line. Did you replace any of
the very small value caps? There should be some 0.01ufd/400V or some such
cap to kill off any HF feedback issues...(no schematic here, just general
principles)

John :-#)#

At 02:59 PM 06/10/2002 -0500, Commander Dave wrote:

>Hello all,
>
>Yes, these are the postings that never end. I am getting so disgusted with
>this G05-805. I was able to get a working HV diode and the problem of
>shaking and blooming still shows up. When powered up totally cold, the HV
>is fine, maybe even a little over. The image on the monitor,however, has a
>very small case of the shakes and as it warms up the HV (about 5 minutes
>or less), the image starts to expand and the HV starts to drop. It was
>down to 10.8 KV when I got disgusted, cut the power and left.
>
>I have:
>
>Tried different game and aux board sets (same problem)
>cleaned and resoldered connectors on the monitor
>cleaned and resoldered the flyback
>Replaced the HV diode (twice to be sure) and tightened connections
>Installed a cap kit with transistors (from Bob Roberts)]
>Freeze sprayed many components in the HV cage with no results
>
>Obviously, I have missed something somewhere and I am almost sure it is
>the obvious. I am about to start at square one and start measuring,
>rechecking and reverifing things I am taking for granted is working. I am
>so tired of working on this problem and it's starting to get in the way of
>other projects.
>
>I'll do my homework again and try to make a logical plan of attack, but
>can anyone let me know what would be good list of thingsto start checking
>first? The high voltages I have done, but what other voltages do I need to
>check? I'm starting over so what other "DUH" type things do I need to
>check again? Oh, and I am afraid that I don't have an O-scope, so I tests
>will have to be adjusted accordingly.
>
>Thanks guys, I'm sure I'll get this thing fixed one of these days if I
>don't hit it with a 2x4 first! ;-)
>
>-Commander Dave

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Received on Sun Oct 6 14:53:37 2002