FLATRON L1717S - lines accross screen whe...

From cold- the screen has horizontal lines across the screen that make using it impossible. One the unit has been on for 10-15 minutes the lines slowly start to disappear and I just get the occasional line flashing randomly. If unit is left on and it enters power saving mode, upon awakening it the lines will start again -but usually quickly clear. The same it true if I toggle the power switch or remove and replace the the VGA cable from the unit.

Below I have attached an image. Also a link to a bigger picture but I'm not sure if it will work as this the first time I've tried to link to an externally hosted file!



I've opened and inspected the units power supply, but all the components seem fine. I've test the capacitors and resistors. The capacitors charge as expected and the resistors are not open circuit. No visible bulging or leaks from the caps. All the step-up transformers look fine. All the diodes tested okay too.

Frankly I'm running out of ideas, the only things I can think of are,

1 - faulty connector
2 - a fault on the controller board
3 - a thermal problem with one of the components, tolerance related.

IF required I have several photographs of the Internals -if that's of any help. Although please excuses the quality, I'm not a great photographer :)

Any help would be much appreciated.