RE: Follow up: WG6100 picture fluctuation

Mark;

I thought I'd offer my limited expertise in this problem.
I had a deflection board with the same problem with the ceramic resistor.
Turns out the wire from the resistor that runs through the hollow tube was
broken. Resoldering the joint didn't help. It was broken near the top of the
tube. Since I could't find any of the resistors, I removed the broken wire,
ran a new longer wire to the resistor & soldered the 2 wires together.
I am sure this is not the "proper" way to fix the problem, but it worked for
me.
It got one of my Star Wars up & running. Been running fine for the past 3
months. I am going to take the monitor back out & fix it correctly as I have
now gotten a HV for the original Amplifone monitor. Once it is fixed
correctly it will be going into a Tempest cab hopefully to be a Major Havoc
soon.
If you ever find out what is causing the snapping in the HV, please let us
know. I have a HV unit doing the same thing. I was told that the Focus or
brightness pot may be corroded & causing a short.

Hope this helps
Randy

-----Original Message-----
From: owner-vectorlist@synthcom.com
[mailto:owner-vectorlist@synthcom.com]On Behalf Of Mark A. Jenison
Sent: Wednesday, February 02, 2000 10:23 AM
To: vectorlist@synthcom.com
Subject: Re: VECTOR: Follow up: WG6100 picture fluctuation

Well, I tested the deflection board again last night after first
resoldering the header pins AGAIN, and resoldering about 50% of the solder
joints on the board, hoping to get lucky and catch the culprit.

The HV snapping appears not to be related to any specific deflection
board. It appears that the HV transformer HAS been replaced at one time
(also, there is a HUGH hole right through the middle of the HV PCB, but
the problem there appears to have been fixed correctly).

Anyway, I fire it up, and the problem is STILL THERE!

So I go into Magic Fingers(tm) mode, and start tapping on, wiggling, and
touching the parts on the board while the game is fired up to see what
happens. Tapping the deflection board has a direct effect on the screen.
So I start wiggling the transistor heat sinks, connectors, etc, trying to
figure out which part I touch effects the screen the most.

Eventually I get down to the large ceramic resistors going across the
board. I grab one and wiggle it, and it appears to fix the screen.
However, I specifically resoldered the joints on these resistors, so it
must be a problem with the actual resistor itself. I push the resistor
down such that the wire leads make more contact with those "hollow pin
things" that the leads are inserted into, and let go, and the picture
stays good.

I figure the resistor needs replaced (as I see the other resistor WAS
replaced at one time, but not this one), but I don't have any spares nor
time to mess with it any longer, so I call it a day.

--
Mark Jenison
Magic Fingers(tm) is a trademark of Mark Jenison, and should not be tried
at home.
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