Re: Amplifone monitor - still stumped on bright dot in middle.

Nope. I don't own a rejuvinator.  Anyone out there have one for sale that works with amplifone's for a reasonably price?

Any chance this would actually help fix it or at least diagnose the problem?

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Hey John, I am by no means a guru here, but do you have access to a rejuvinator? They can tell you a few things about the condition of the tube. Shorts being one of them.
Jordan B
On Sun, Jul 24, 2011 at 8:38 PM, John Huie <jehuie@sbcglobal.net> wrote:
Thank you John.  I'm focusing on that last part you said now because it makes sense to me.  I'm thinking that you mean if I measure the voltages on either of the 3 color signals from the SW CPU board that will indicated my Z signal, correct?  Which is why I really need a scope.
However, since both my SW boards do the same thing and work fine in my other SW game, they are clearly generating the Z signal.  Which leaves the other two options.
It seems unlikely that all 3 colors would be having problems amplifying by the monitor chassis.  And since the dot in the middle is pure white, I think we can negate that possibility.  I'm not sure this is true but I'm not getting a lot of feedback so that's my best guess.
So that leaves me with a short in the monitor as being my most likely culprit.  I tested for a short at the pins
 and only found a short going from the heater pins to pin 4.  I'm still not sure if that is ok or not though.  And if it's a problem, whether there is a work around or if it means I'm screwed and need a new tube.
Help. Pretty please!
--- On Sat, 7/23/11, John Robertson <pinball@telus.net> wrote:
From: John Robertson <pinball@telus.net>
Subject: Re: VECTOR: Amplifone monitor - still stumped on bright dot in middle.
To: vectorlist@vectorlist.org
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                 www.flippers.com 
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