Vectorlist Archives: RE: Putting an unknow condition boards in a

From: Robert Gonyer <rgonyer_at_mchsi.com>
Date: Wed Mar 10 2004 - 00:21:02 EST

My bad. 4 and 5 is the voltage coming back from the power transistors...

-----Original Message-----
From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Tony Jones
Sent: Tuesday, March 09, 2004 11:08 PM
To: vectorlist@vectorlist.org
Subject: Re: VECTOR: Putting an unknow condition boards in a working WG6100?

I thought it was pins 3/6 vs gnd test point.

No idea where 4 and 5 came from.

Check the schematics.

Tony

> I hooked up the board and took the measurements. I measured the following:
>
> Pin 1 32.8
> Pin 3 28.8
> Pin 4 1.1
> Pin 5 .1
> Pin 6 -27.3
> Pin 7 -32.8
>
> It look like it's time to use the LV2000 which has been in my parts
> cabinet since 1998.
>
>
> Scott
>
> rgonyer@mchsi.com wrote:
>
> > You can hook the deflection board up to the cabinet, make sure it's
laying
> on
> > something non-conductive. Check for the proper voltages on pins 4 and 5
of
>
> > P100 to check the low voltage output. Should be around 27 or 28 VDC.
> >
> >>You can test the low voltage section of a WG deflection board without
> >>connecting it to any other components. I'd recommend doing this first
> >>(not least because low voltage failures are very common) before fully
> >>connecting it. Avoid blowing power transistors and the like.
> >>
> >>I don't have the schematics handy, but there is a JPEG on the LV2000
site
> >>which you can generalise back to the standard design.
> >>
> >>Tony
> >>
> >>
> >>>I have a non working WG6100 and a working WG6100. What are the risks in

> >>>swapping the boards into the working monitor as a trouble shooting aid?

> >>>For instance, If I swap in the deflection board from the non working
> >>>monitor do I risk damaging the working monitor. What about the high
> >>>voltage assembly etc.?
> >>>
> >>>Thanks,
> >>>
> >>>Scott

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RE: Putting an unknow condition boards in a working WG6100?