LCD monitor problem...I'm puzzled

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I have a HP 1530 15" monitor where the screen is very dull when my desktop pc is switched on. All the colours and icons ect are clearly visible but it's just very very dull to look at and difficult to watch any movies on ect.
It's like that when i boot up and stays that way all the time. It happened a few days ago, i was using it and it was fine and the next day i booted up my pc and there it was.

I'm hoping someone can help advise what's wrong and if i can replace a specific part if need be.
I'll list below what i've tried in order to help you with any suggestions.

Contrast and brighness controls make no improvement.
Auto config function on monitor doesn't help.
Trying it with different refresh rates makes no difference.
I've tried a known good working vga cable with no improvement.
I've check the vga port on the back of the monitor and there are no visible faults.
The dull screen is still dull when connected to another knowing good working pc system.
I've tried a known good working power cable.
I've opened up the monitor and checked all connections inside are secure.

I'm kinda suspecting it's either the invertor or backlight but i don't know how to determine which one could be the culprit if that's the case.

I know monitors are now fairly cheap ut i'm kinda skint just now so if a replacement part is cheaper i'd rather go for that option and fit it myself.

Many thanks in advance for any suggestions or help provided.

 

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Have you tried contacting HP (whether under warranty or not) just to see if it's a known issue ?

 

Sounds like the back light.

 

I agree, the backlight isnt working properly. it could be the light itself or the inverter. most likely, the inverter.

 

Thanks for the feedback guys.

I've had alook around HP with no success.
I'm gonna try find a way to see if i can test the invertor/backlight with a voltmeter.
I don't wanna buy one then find out it's the other lol.

 

be careful when replacing those inverters, they give quite a shock

 

redstar,

Which operating system do you have installed on your "desktop pc?"

 

I had exactly the same problem and the final result was power supply.

In my case it wasn't "firmly" plugged in, had to unplug and re-plug every ends to make sure all firm.

If your screen uses kettle lead (no power supply needed), then still try to un-plug and re-plug....

failing that it'll probably be the inverter.

check warranty.......if out of warranty then will need replacing as HP charges a lot for out of warranty repairs...

 

Prior to and after the monitor developed this fault it's xp pro.
I have tried it on my other system which dual boots vista home basic and xp pro with no difference on either os.

 

redstar,

Have you checked your "Energy saving features of monitor" settings in your operating system?