Backlight bleed

[thkrmr]

I have three distinct spots where the backlight bleeds onto the screen. Is this normal, does someone else experience this or does my screen have an issue and needs to be replaced? I handled it with proper care and was gentle with it when inserting

[deerwings]

This is normal due to the LCD that is used. There's not much you can do on the screen itself, because of the way it is built, it just happens to be the way the backlighting works on some of these smaller LCD's unfortunately. However, if it gets worse, you might have a defective LCD.

[thkrmr]

It seems though if you apply slight pressure to the protective screen the bleeding changes / disappears. I might have to test taking the screen out altogether and see if the sit is too tight and if there's bleeding if the screens is out. I do hope there will be an aftermarket option / upgrade for an IPS.

[crashoverride]

This occurs when the LCD is not mounted level. This can be due to it not seating correctly (check its in its groove and under all the surrounding clips) or when the motherboard screws are too tight or not torqued in sequence. As noted, any twist in the case will flex the LCD causing light bleed.

[thkrmr]

This occurs when the LCD is not mounted level. This can be due to it not seating correctly (check its in its groove and under all the surrounding clips) or when the motherboard screws are too tight or not torqued in sequence. As noted, any twist in the case will flex the LCD causing light bleed.

The LCD is definitely flush, I had "massaged" the clips before inserting. Also I made sure the screws are not to tight, because initially I torqued them too tight. Was there a particular sequence in the assembly video for the screws? Also the bleed occurs when the device is stationary, not when I flex it, it's the opposite - bleed disappears when a bit of pressure is applied.

[crashoverride]

The 100% sure way to tell if the issue is with the LCD is to remove it from the case and connect it to the mainboard (taking all appropriate precautions). When a LCD module is connected this way, there should be no light bleed at the edges. If there is, the LCD panel is damaged.

[thkrmr]

The 100% sure way to tell if the issue is with the LCD is to remove it from the case and connect it to the mainboard (taking all appropriate precautions). When a LCD module is connected this way, there should be no light bleed at the edges. If there is, the LCD panel is damaged.

That is a good idea, will test.

[deerwings]

The 100% sure way to tell if the issue is with the LCD is to remove it from the case and connect it to the mainboard (taking all appropriate precautions). When a LCD module is connected this way, there should be no light bleed at the edges. If there is, the LCD panel is damaged.

That is a good idea, will test.

I have to remove the LCD from the case to move the internals to a new case after painting it in the future. I'm dreading doing this, but I have a few potential tricks up my sleeve that I hope work.

[andrewe1]

I have 2 units and both look similar to this... It's a bit of a bummer but you don't notice it really when in game. I don't even notice it on dark games.

[thkrmr]

I have 2 units and both look similar to this... It's a bit of a bummer but you don't notice it really when in game. I don't even notice it on dark games.

Whenever the screen changes you notice it, it bums me out a little hit. I do hope there will be a suitable good IPS upgrade in the future.

[Sheae]

I think that amout of light bleed in the OP is pretty much standard on a non-premium display, which this is not. I personally use the device on 25% brightness, which I find to be more than enough, and see no light bleed at all neither during game nor on the Hardkernel boot screen (where the edges are black and would probably be noticable).

If you're fine with lowering brightness, you could try it and see if it helps. Also, it's not like you see a black screen so frequently that it should matter.

[..] there should be no light bleed at the edges. If there is, the LCD panel is damaged.

[...] because initially I torqued them too tight. [...]

Could also be a correlation there. Checking the display outside of the shell should give us more info.

[thkrmr]

Out of the shell
The bleeds are as good as invisible and some don't appear at all.





Comparison, sitting flush in the shell




I'd say the clips in the shell exert too much pressure on the display and it's sitting too flush, which causes the bleeds appear / be more visible, than they actually would be.

[shareef]

Very interesting. I received my replacement screen now, and when I take my oga apart to install the replacement screen I'm going to check if the existing screen with the light bleed looks better once it's removed from the case. Here's what it looks like currently:

[thkrmr]

If I look super closely, same in your photo shareef, bleed is evidently present exactly where the clips are holding down the screen, especially visible on the bottom.

[kpa62]

I've had this too and it is inherent of thin lCD panels. Tablets and laptops suffer from this. A very simple fix, back of on the screws into the main board a half turn each and back of a quarter turn on the screws on the back. the pressure points are typically cause your applying too much pressure or a twist in the screen. from what i've seen. The screws torque the case if not evenly screwed in. if you torque it bad enough you may need to re-seat the screen. Then apply the screws carefully again.

[kpa62]

This occurs when the LCD is not mounted level. This can be due to it not seating correctly (check its in its groove and under all the surrounding clips) or when the motherboard screws are too tight or not torqued in sequence. As noted, any twist in the case will flex the LCD causing light bleed.

The LCD is definitely flush, I had "massaged" the clips before inserting. Also I made sure the screws are not to tight, because initially I torqued them too tight. Was there a particular sequence in the assembly video for the screws? Also the bleed occurs when the device is stationary, not when I flex it, it's the opposite - bleed disappears when a bit of pressure is applied.

i use a x pattern like how you put lug nuts on a car to assemble for even torque btw.

[thkrmr]

I've had this too and it is inherent of thin lCD panels. Tablets and laptops suffer from this. A very simple fix, back of on the screws into the main board a half turn each and back of a quarter turn on the screws on the back. the pressure points are typically cause your applying too much pressure or a twist in the screen. from what i've seen. The screws torque the case if not evenly screwed in. if you torque it bad enough you may need to re-seat the screen. Then apply the screws carefully again.

I don't believe it's the screws anymore, at least to a much lesser extent but rather the clips holding the screen in place. I had loosened the screws as the first measure. Comparing out of the case vs in case and looking closely: bleed appears arout the spots where the screen is being held tight.

[shareef]

I've had this too and it is inherent of thin lCD panels. Tablets and laptops suffer from this. A very simple fix, back of on the screws into the main board a half turn each and back of a quarter turn on the screws on the back. the pressure points are typically cause your applying too much pressure or a twist in the screen. from what i've seen. The screws torque the case if not evenly screwed in. if you torque it bad enough you may need to re-seat the screen. Then apply the screws carefully again.

I don't believe it's the screws anymore, at least to a much lesser extent but rather the clips holding the screen in place. I had loosened the screws as the first measure. Comparing out of the case vs in case and looking closely: bleed appears arout the spots where the screen is being held tight.

@thkrmr I totally agree. I don't believe it's due to any of the screws being screwed on too tight. See my post here viewtopic.php?f=187&t=37850&p=283235#p282631 I had taken my unit apart specifically for that reason, to loosen all the screws with the intent to fix the light bleed.. it didn't fix anything and in fact I ended up breaking the power switch in the process lol

[m8kbv]

I have the same problem, I also think that this is the result of too strong clamps holding the display to the housing, loosening the screws slightly improves the situation.

[m8kbv]

I have the same problem, I also think that this is the result of too strong clamps holding the display to the housing, loosening the screws slightly improves the situation.

I have before and after replacing the screen warranty (without much improvement).

[Sheae]

I have before and after replacing the screen warranty (without much improvement).

To be honest it had more consistent lighting before.

[shareef]

I have the same problem, I also think that this is the result of too strong clamps holding the display to the housing, loosening the screws slightly improves the situation.

I have before and after replacing the screen warranty (without much improvement).

Did you happen to test either screen while not mounted in the case? Would be interesting to see if the issue goes away when the screen is powered on without being mounted. I'll be testing this with my replacement screen, just haven't had a chance to do it yet. I'll be posting results here for sure

[m8kbv]

I'm sure the screen would be almost perfect with no housing. the console went back to the complaint, the service reflected a fingerprint on the screen and scratched the casing for me: /

[mimonzz]

I didn't see anyone saying it before so I will. I have the sam issue and I tested the screen outside the case. It worked perfectly. The hinges holding the screen are too tight. It would be nice to see some idea on how to loosen them. I can take picture of the screen inside and outside if someone wants it.

[shareef]

I can take picture of the screen inside and outside if someone wants it.

Yes please.

[thatvinylgeek]

I didn't see anyone saying it before so I will. I have the sam issue and I tested the screen outside the case. It worked perfectly. The hinges holding the screen are too tight. It would be nice to see some idea on how to loosen them. I can take picture of the screen inside and outside if someone wants it.

I did see someone suggest removing two of the outside clips and just using the remaining 3, should still be plenty to hold the screen in place.

Not sure if anyone has tried this?

[Sheae]

[...] It would be nice to see some idea on how to loosen them. [...]

I bet you could just sand some of the material off. Or use a hobby knife to cut a thin slice of it off.

[thkrmr]

[...] It would be nice to see some idea on how to loosen them. [...]

I bet you could just sand some of the material off. Or use a hobby knife to cut a thin slice of it off.

So, I had an entirely new clear case for the original OGA with the internals and a screen that I took quite a few times apart and I was assembling the OGA 1.1. I took my trusty Dremel to both cases. I sanded off the middle of every nib holding the screen in place. It did not help much, bleed is still there, on both units, exactly where the nibs are. This is a design issue.