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CrossOver 27Q LED/LED-P, 27M LED, & 2720MDP GOLD LED Monitor Club - Page 521

post #5201 of 6483
Quote:
Originally Posted by rho86 View Post

Have you tried another dual link DVI cable, another video output, or another video card altogether?

Yes, I had a spare dual link dvi cable. Tried all the inputs on my gpu except for the second gpu. I also tried it on another system as well. No luck. I hope I don't have to send this thing back.
post #5202 of 6483
Quote:
Originally Posted by tehpsyc View Post

Within an hour of using my new monitor, the screen went black and rendered no display. My computer still thinks its working (the monitor is detected) and the back light is still on (so not the famous back light PCB burnout issue that I had with my first Crossover) but a whole new problem. … I have tried the following options:

3 DVI cables
3 different power supplies (the one it came with, the one my other crossover came with, and one from a Shimian that was exactly the same)
Both DVI ports on my computer (Radeon 7970, one DVI port and one mini-displayport with the expensive adapter)
My roommates computer (GTX 560 Ti)

… I suspect something is wrong with the primary PCB, the one where the connections are made, and will need to be replaced; …

Also, to make the situation more confusing, I randomly tried firing it up again, power cycling it several times rapidly and it actually came on and was working after having been dead for a few hours, not to mention the first dozen or so attempts immediately preceding. So naturally I decided to cycle it one more time (it was living on borrowed time anyway) to see how it would behave, to which it returned to the blank screen with the back light on.

My Crossover 27Q has developed the same blackout problem after two weeks of usage. At my seller's request, I opened it to examine the innards. The LED driver board (small one mounted on the side) and the connector board (square one mounted in the center) both looked okay. I noticed a screw was missing on the lid at the top edge of the monitor. (See red circle on first photo.) I took off that lid. It covers three more boards. Two of them are long and slim. The larger one sitting below them had two splotches of what looked like white molten wax to me, which seems to come from cylindrical parts mounted onto the board. (See second photo.) Are there capacitors filled with such white stuff? Keep in mind that while it doesn't look right to me, I do not know whether this is actually a defect, and whether it is the cause of the blackouts.




Anyone who knows about electronics, your insights concerning the white splotches are welcome.

You can see a (low quality) video of the blackout here:

http://tinypic.com/player.php?v=30a973n&s=6

The characteristic thing is that the blackout onset is not instantaneous. It takes about half a second to a full second for the blackout to engulf the entire screen. It is like power fading from the monitor, like an LED on some stereo equipment that consumes what's left in a capacitor before dieing off, just quicker.

This effect is a bit disconcerting. I've never seen such a blackout on any monitor at all. Neither on television sets. It certainly doesn't rhyme with quality. Might be bad luck, but a missing screw and squashed whatnot on a PCB, hmm …

I trust the cause of the blackout will be found and the fault repaired. I bought from the seller enjoying the best reputation on this forum.

I do not yet regret purchasing the monitor as the image is truly beautiful. Only one dead pixel on the side (hardly noticeable), and a slight yellow tint, none of which bothers me. But occasional blackouts do, as they are foreboding of an eventual final blackout.
post #5203 of 6483
Quote:
Originally Posted by Ueberglock View Post

My Crossover 27Q has developed the same blackout problem after two weeks of usage. At my seller's request, I opened it to examine the innards. The LED driver board (small one mounted on the side) and the connector board (square one mounted in the center) both looked okay. I noticed a screw was missing on the lid at the top edge of the monitor. (See red circle on first photo.) I took off that lid. It covers three more boards. Two of them are long and slim. The larger one sitting below them had two splotches of what looked like white molten wax to me, which seems to come from cylindrical parts mounted onto the board. (See second photo.) Are there capacitors filled with such white stuff? Keep in mind that while it doesn't look right to me, I do not know whether this is actually a defect, and whether it is the cause of the blackouts.




Anyone who knows about electronics, your insights concerning the white splotches are welcome.

You can see a (low quality) video of the blackout here:

http://tinypic.com/player.php?v=30a973n&s=6

The characteristic thing is that the blackout onset is not instantaneous. It takes about half a second to a full second for the blackout to engulf the entire screen. It is like power fading from the monitor, like an LED on some stereo equipment that consumes what's left in a capacitor before dieing off, just quicker.

This effect is a bit disconcerting. I've never seen such a blackout on any monitor at all. Neither on television sets. It certainly doesn't rhyme with quality. Might be bad luck, but a missing screw and squashed whatnot on a PCB, hmm …

I trust the cause of the blackout will be found and the fault repaired. I bought from the seller enjoying the best reputation on this forum.

I do not yet regret purchasing the monitor as the image is truly beautiful. Only one dead pixel on the side (hardly noticeable), and a slight yellow tint, none of which bothers me. But occasional blackouts do, as they are foreboding of an eventual final blackout.

The internals of my monitor appear exactly the same as yours (the white adhesive and the missing screw) but I don't think that is abnormal. My other crossover, which after getting the LED PCB exchanged, has been working fine for about 6 months, and it too is missing that screw. I never lifted up the plate on that one t o check the LG boards however, but I suspect they all have that adhesive that can be a normal finding in electronics.

The symptoms of my screen don't quite sound the same as yours. Mine seems to be an issue with the monitor sending the actual display data to the panel. So far I've been able to get the monitor start in about 1/50 power cycles (3 successful starts so far) and once its started its fine and has no issues. But if let the computer sleep or power cycle the monitor the problem returns. The display is blanked out immediately upon restarting, with no picture ever displaying. The backlight and brightness adjustments work normally.

I inspected all my PCBs and see no evidence of overheating or damage. I'm wondering now if I its the main crossover PCB or some of the LG circuitry tucked under that metal panel.
post #5204 of 6483
Quote:
Originally Posted by philharmonik View Post

Niiiiiiiice!! Are you playing with TressFX enabled or disabled?

disabled. tressfx is a mess and destroys your pc
Quote:
Originally Posted by philharmonik View Post

Sooooo....just unpacked my Crossover and I'm devastated. Has anyone else received their monitor like this? I have already contacted the seller, so I'm waiting on their response, but I figured I would show you guys and see if you had any suggestions.


woah........

aw is probably going to tell you to open the back up and check make sure connections are fully seated first and check for any bad looking spots. or it just got damaged in shipping. your box looked ok though.
Edited by Descadent - 3/7/13 at 7:12pm
post #5205 of 6483
Just finished unpacking my new Crossover 2720MDP. Take look at this - is it OK, that it has so much backlight bleeding?
Also found 1" scratch at the right bottom corner (
Seller - accessorieswhole
Thinking on returning item frown.gif

post #5206 of 6483
is that on a black background or white?

looks terrible hit them up immediately they will take care of you.
post #5207 of 6483
Quote:
Originally Posted by Descadent View Post

is that on a black background or white?
looks terrible hit them up immediately they will take care of you.
It's on a black (( Hope I won't have to pay for returning shipping..
Edited by Hicks81 - 3/7/13 at 8:58pm
post #5208 of 6483
Jesus that could act as a lamp! Definitely return that, what a mess. Was that from accesorieswhole? Maybe I should consider greensum too... thanks for the recommendations on the panel guys. Close to making a purchase I think! thumb.gif
post #5209 of 6483
Aw still best but things happen with international shipping
post #5210 of 6483
Received my 27Q yesterday hooked it up and it was perfect no backlight bleeding/dead pixels however today after playing simcity for a couple hours i alt+tabbed and noticed a red pixel on my bottom left screen, any advice to fix this?
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