LCD keeps blacking out?

GLO · 19-March-07, 04:31 PM

My friends LCD monitor randomly blacks out for no known reason. when the screen returns its appears fine till it repeats.

Usually, a soft reset of the PC will rectify the monitor for a while. there is no apparent rhyme or reason for the monitor black outs.

I suspect that its either a faulty onboard video. But its an AMD with only 256Mb of ram (probably shared with the video)

Do you think simply adding a 1gb of Ram will resolve this issue?

Thanks

joecoin · 19-March-07, 08:10 PM

No .

GLO · 19-March-07, 08:39 PM

Quote:

Originally Posted by joecoin


	No .

Ok, so then it has to be either the inbuilt VGA or the VGA cable right?

Anything else it could be?

joecoin · 19-March-07, 08:47 PM

Smells like the inverter or the lamps in the monitor. Connect it to another computer and see what happens.

RBIEZE · 20-March-07, 02:01 PM

I had the same problem with an Lcd using the DVI connector on my vid card.

Changed to the Dsub connector and it works fine.

I know it doesnt explain anything, but it was a solution that works.

Rockin'male · 26-March-07, 03:18 PM

I have to agree with joecoin.

No, adding more ram to the unit will not fix the issue. This is an common lcd problem. Either, the backlight is bad or the inverter board that powers the backlight is going bad. As you mentioned earlier a reset will work for the time being but eventually it will get worse and then go blank for good.

Now's the time to look for your receipt and find out if its still under warranty and rma the lcd.

Twizted · 26-March-07, 03:47 PM

not to long ago I had a plethora of CTX 17" LCD's that came from a bank who upgraded..... They all done the same thing... only alot more... to the tune of 3+ times a minute...

Anyway, I took them apart and turned out they all had the same problem.. Bad filter caps on the PSU... Replaced all of those (and some had some other small failing parts) and they all worked perfect.... Fixed somewhere in the line of 20 of them this way successfully

I would say just as Joe said, either the Inverter or Lamps are failing or maybe its the PSU itself that is failing....

19-March-07, 04:31 PM		#1 (permalink)
GLO Apex Tech Fanatic	LCD keeps blacking out? My friends LCD monitor randomly blacks out for no known reason. when the screen returns its appears fine till it repeats. Usually, a soft reset of the PC will rectify the monitor for a while. there is no apparent rhyme or reason for the monitor black outs. I suspect that its either a faulty onboard video. But its an AMD with only 256Mb of ram (probably shared with the video) Do you think simply adding a 1gb of Ram will resolve this issue? Thanks

19-March-07, 08:10 PM		#2 (permalink)
joecoin Apex Tech Fanatic Supreme	Re: LCD keeps blacking out? No .

19-March-07, 08:47 PM		#4 (permalink)
joecoin Apex Tech Fanatic Supreme	Re: LCD keeps blacking out? Smells like the inverter or the lamps in the monitor. Connect it to another computer and see what happens.

20-March-07, 02:01 PM		#5 (permalink)
RBIEZE Apex Tech Demi-God	Re: LCD keeps blacking out? I had the same problem with an Lcd using the DVI connector on my vid card. Changed to the Dsub connector and it works fine. I know it doesnt explain anything, but it was a solution that works.

26-March-07, 03:18 PM		#6 (permalink)
Rockin'male Apex Master Tech	Re: LCD keeps blacking out? I have to agree with joecoin. No, adding more ram to the unit will not fix the issue. This is an common lcd problem. Either, the backlight is bad or the inverter board that powers the backlight is going bad. As you mentioned earlier a reset will work for the time being but eventually it will get worse and then go blank for good. Now's the time to look for your receipt and find out if its still under warranty and rma the lcd.

26-March-07, 03:47 PM		#7 (permalink)
Twizted Editor/Reviewer/LED Guru	Re: LCD keeps blacking out? not to long ago I had a plethora of CTX 17" LCD's that came from a bank who upgraded..... They all done the same thing... only alot more... to the tune of 3+ times a minute... Anyway, I took them apart and turned out they all had the same problem.. Bad filter caps on the PSU... Replaced all of those (and some had some other small failing parts) and they all worked perfect.... Fixed somewhere in the line of 20 of them this way successfully I would say just as Joe said, either the Inverter or Lamps are failing or maybe its the PSU itself that is failing....

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