Re: Amplifone jitters

Another point is that you can run the monitor with the yoke disconnected
so there is a very little risk of destroying the ouptput transistors...

John :-#)#

ps, we shall be carrying a flyback testor kit (to go along with the
capacitor testor kit) in the very near future, keep an eye on our web
page for updates...

Scott Swazey wrote:
>
> Mitchell,
>
> Actually I just use a dual (+15V , -15V), current limited (1.5A) power
> supply and a couple of 1k resistors. Most of the "spot kill on" problems
> in the XY boards are transisor related. Using the 1K resistors, I
> "bias-up" the XY board at 15V. Now I can verify that the bias/output stage
> circuits work correctly. Once they are working, you can remove the 1K
> resistors and put the board back in the game to debug the rest of the XY
> problems.
>
> I've got some notes that I'll post to the vector list...
>
> -Scott
>
> PS As to special tools: 1. A homemade a cable that connects the dual power
> to the monitor. 2. Two 1K resistors with clip leads on the ends. -S
>
> At 03:37 PM 6/25/98 -0400, Mitchell Rohde wrote:
> >
> > Scott-
> >
> > When you fix these XY deflection boards, what do you use as a test
> > signal? Something from a game? A signal gen with a capacitor?
> >
> > Mitch
> >
>
> --
> Scott Swazey QUALCOMM Incorporated Work: (619) 657-2419
> mailto:sswazey@qualcomm.com V-209H Pager:(619) 683-5210

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