Re: Vector: Cinematronics monitor - half screen problem

Is it possible that the xistor tests good out of circuit because it's not
under "load"? Could it be breaking down once voltage hits it? Did you
try replacing it even though it tested OK?

Keep us posted.

> Hello all,
>
> I've got a Cinematronics monitor that's driving me nuts (heard that this
> is a common complaint...) Anyway, I just rebuilt two of these monitors,
> one for a friend, one for myself. My friend's monitor now works fine.
> Mine displays the left half of the image. Anything intended for the
> right side is collapsed into a line in the center. With a scope in XY
> mode, I get a good image straight off the X and Y gain pots, so the
> DAC80's and the analog switch are fine. But on the emitter of Q201 I
> get half an image. I know this is wrong because on the good monitor, I
> get a full image on that transistor... but I tested that transistor out
> of circuit and it seemed fine. Also replaced all diodes in the X
> section with new 2004's, and replaced all resistors I halfway suspected.
> Anyone had this problem before? Any ideas?
>
> -Lewis
>
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Received on Mon Nov 20 21:17:27 2006