unstable Monitor Display

[rangarajan]

O/S Windows 8.1

Lenovo LCD square Monitor.

Though CPU starts normally on switching on, sometime display is Not seen, Sometime display is seen but unstable & disappears, very few times display is seen & stable.

By switching on & off repeatedly the monitor only, the display comes & becomes stable.

Thankful for a soln.

[fink]

Have you tried a different video cable to the monitor? Or just unplugging and re-plugging the existing one a few times? The contacts on the connectors can become dirty/corroded and cause problems like that.

[jdc2000]

If the cable is not the issue (check that first), it could be either a power supply for the monitor going bad - try another one if it is an external brick - or it could be a backlight going bad.

[rangarajan]

Video cable at the monitor end is fixed & could not be detached.
Hence could not try with an alternate one
On the cpu side, i had detached, cleaned & refixed many a times already.

Power supply thro an external stepdown transformer & will try with an alternate one if available.

What is ' backlight going bad '/

Could it be an issue with my ram, Fan, Battery or motherboard?

Thanks fink & jdc2000 for your time

[jdc2000]

Possibly useful link:

http://www.tomsguide.com/forum/60750...light-inverter

[rangarajan]

T/U. Useful link.
Now i have to suspect Inverter as well.