Re: (Hopefully) simple Battle Zone problem

Sounds to me like the classic "Blooming" problem with the BW X/Y's. The
diode on the wire going to the tube is failing resulting in the HV being
wrong.

Replace that diode and you should be set. Try the freeze spray on it to
find out.

David
-----Original Message-----
From: Christopher X. Candreva <chris@westnet.com>
To: vectorlist@mcfeeley.cc.utexas.edu <vectorlist@mcfeeley.cc.utexas.edu>
Date: Tuesday, October 13, 1998 9:41 PM
Subject: Re: (Hopefully) simple Battle Zone problem

>On Wed, 14 Oct 1998, Mitchell Rohde wrote:
>
>> Hmmm... not to contradict a master, but does that make sense?
>> Wouldn't "heat up" problems tend to indicate something in a
>> component with a higher probability than a cold joint?
>
>Didn't want to say it . . . :-)
>
>I tried Al's suggestion first: Tried cold-spray on the deflection trans,
and
>the 2 on the HV cage. No effect.
>
>I do suspect more the HV though than deflection. By powering on cold to a
>test pattern, it's obivous that is grows in all directions fairly evenly.
>Both directions COULD fail the same way I guess, but I doubt it.
>
>Zanen kit is about $5. I'm tempted to just order the thing tomorrow, to
have
>some parts, and have it on it's way while I tighten all the solder joints,
>probably tomorrow night.
>
>
>I find it ironic that Tempest/Star Wars has FAQ's out the wazoo, but not
>much really for the WG in Battle Zone. Is it that much more reliable ?
>
>-Chris
>
>==========================================================
>Chris Candreva -- chris@westnet.com -- (914) 967-7816
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Received on Wed Oct 14 02:58:51 1998