There was a power cut due to a tree falling on the wires, now my PC monitor doesnt work. Its got a green light on but no picture.
What is likely to have broken, and can it be fixed?
[george]There was a power cut due to a tree falling on the wires, now my PC monitor doesnt work. Its got a green light on but no picture.
What is likely to have broken, and can it be fixed?
[george]On Saturday 28 December 2013 11:58 george - dicegeorge wrote in uk.d-i-y:
Likely something in the power supply - I assume this is an LCD panel?
Have you got another monitor or TV with VGA to test the PC is actually producing a video signal?
How are you going to see any replies :-)
yes i've swapped monitors. Could the green light be on in the monitor if the power supply is broken? [g]
I don't have my divining rod to hand and the Crystal ball is at the polishers. What sort of monitor is it?
Brian
How many conductors in the psu cable? IE is it seperate or internal. If only two and its seperate, you might be able to get a replacement, but really, you need another monitor to test which bit is bust, monitor or psu.
Brian
Its probably the back light, he is probably shining a torch in the back. grin. Brian
On Saturday 28 December 2013 12:54 george - dicegeorge wrote in uk.d-i-y:
There are usually several power rails at different voltages - one may be knackered whilst another may be OK.
Could be the backlight or backlight supply?
memorise the key presses required to print them ?
G.Harman
Quite. The OP should shine a light at the screen and examine it carefully for a faint picture. Sometimes dead monitors are not as dead as they seem.
Always worth checking is that.
The most common failing is the backlight inverter on LCD screens. Sometimes if you play a bright light on the screen and look closely, you will see there is still a picture there, just not backlit.
Some backlight PSU problems are easy to fix. Often just borked capacitors, sometimes the inverter output transformer (£10 / ebay normally)
So no basis for the powersurge claim. Power cut, sure.
Most common fault failed psu caps.
NT
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