Digitek Monitor (screen size keeps changing)
 

Hi!

I have a Digitek monitor which the screen size keeps changing.
The brightness cannot be adjusted much. (i've checked the VR of the knob no
problem)

I tried turning the "screen" on the FBT and and the rate of the size
changing speed increases with the brightness
until it shut down for a while and returns.
Th screen will show a very bright background and if "screen" is slightly
reduced, the size changing symptoms seems to
disappear.

However if the monitor is switched off and on (within 3 secs) again the size
changing problem comes back again.


Does anyone know what is the likely problem?

Thank you
Richard