RE: 6101 Def Board Prob

OK, I give up.

I guess I've worked on too many Cine monitors that would blow the output
stages if no output transistors, and assumed that the WG and G08 would be
the same. Never took the theory of these monitors so that could be my
problem...Learn something every day around here!

John :-#)#

At 01:34 PM 9/19/00, jeff hendrix wrote:

>I've fixed probably over 100 deflection boards and I test them with the
>output transistors unplugged (so I don't risk overloading an output
>transistor if there's still a problem). I've yet to have blown any other
>parts as a result running without the output transistors.
>
>-jeff
>
>-----Original Message-----
>From: John Robertson [<mailto:jrr@flippers.com>mailto:jrr@flippers.com]
>Sent: Tuesday, September 19, 2000 12:40 PM
>To: vectorlist@synthcom.com
>Subject: RE: VECTOR: 6101 Def Board Prob
>
>If you run an XY monitor in the cabinet with the output transistors
>unplugged you will destroy the driver transistors and probably some
>resistors and other bits will blow up as well. BUT you can run an XY
>monitor with the inputs shorted to ground and the YOKE ONLY unplugged with
>no risk to the electronics, or far less risk as there is no load for them
>to try and sink vast amounts of current (whatever the power supply can
>deliver without blowing up itself), which is also the reason to install the
>LV2000 kit!
>
>John :-#)#
>
>At 08:53 AM 9/19/00, Jenison Mark-QA3578 wrote:
> >John,
> >
> > > NEVER NEVER NEVER run an XY monitor with the deflection
> > > transistors out of
> > > circuit unless you really like letting the smoke out of numerous
> > > components.
> >
> >I guess you need to clarify this statement for me a bit more; I'm not sure
> >what you mean by this.
> >
> >It is safe to disconnect everything from the deflection board and run it by
> >itself (as shown in the installation instructions for the LV2000
> ><http://www.diac.com/~jeffh/lv2000/>http://www.diac.com/~jeffh/lv2000/).
> I don't know how much help it is for
> >debugging it this way, but it might be helpful, and sure is a lot easier to
> >work on this way.
> >
> >--
> >Mark Jenison
> >---------------------------------------------------------------------------
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>
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> <http://www.flippers.com>http://www.flippers.com
> "Old pinballers never die, they just flip out."
>
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  John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
  http://www.flippers.com
         "Old pinballers never die, they just flip out."

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Received on Tue Sep 19 19:47:55 2000