Osborne Vixen - Zenith 7" display t-shooting issues

[Chuck Guzis]

On 11/06/2014 11:42 AM, tony duell wrote:

>
> This sounds thermal to me. Somethng is failing when hot. Maybe the HOT. Maybe
> a diode or capacitor in the horizontal output stage.

Probably not a power supply issue, per se.  Usually, when power supply 
voltage drops, the image shrinks on the screen.

I do wonder if it might also be an intermittent (thermal) short in the 
deflection yoke.

--Chuck