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topcat07

On a grey screen does anyone have a light white patch at the bottom?

18 posts in this topic

It's not faulty, it's where the processor and signal processors are located. As long as it's not too bad I wouldn't worry about it.

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It's not faulty, it's where the processor and signal processors are located. As long as it's not too bad I wouldn't worry about it.
its in the middle of the home button and one with three lines in a rectangle shape. Don't think it was there earlier does yours have it?
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It's gone now must have been due to me using it so much heating up processor. Thanks for the info your very knowledgeable

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Back again the weird thing is it is only visible on grey screen..

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Hi. I took an OSD I picked up just before Christmas back to EE because of the same problem. After showing this "blob" phenomena by playing a game on it for about 5 minutes, it was replaced with a fresh phone. This new one shows the same issue though not as severe.

Once I understood why it was doing this I stopped worrying too much about it - it seems the processor is located where the blob appears and that when the CPU is tasked heavily the heat generated changes the characteristics of the display's liquid crystals. It's a design flaw but not, in my opinion, serious. Yes, it is more noticeable on greyish backgrounds.

Cheers :-)

Edited by alexquant
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Hi. I took an OSD I picked up just before Christmas back to EE because of the same problem. After showing this "blob" phenomena by playing a game on it for about 5 minutes, it was replaced with a fresh phone. This new one shows the same issue though not as severe.

Once I understood why it was doing this I stopped worrying too much about it - it seems the processor is located where the blob appears and that when the CPU is tasked heavily the heat generated changes the characteristics of the display's liquid crystals. It's a design flaw but not, in my opinion, serious. Yes, it is more noticeable on greyish backgrounds.

Cheers :-)

Hi its a bit a annoying but like you say it's with all of them so at least I'm not one. Thanks for all the info

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I had my first one replaced because it really was bad for over heating, the second one is much better. It's not just the processor by the way, all the signal processors are around there, there's a picture somewhere of a breakdown of it(damned if I can find it now). There's a trio of chips that surround the 1cm square patch on the screen. A design flaw really, they should have been spread out more.

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I had my first one replaced because it really was bad for over heating, the second one is much better. It's not just the processor by the way, all the signal processors are around there, there's a picture somewhere of a breakdown of it(damned if I can find it now). There's a trio of chips that surround the 1cm square patch on the screen. A design flaw really, they should have been spread out more.
do you think slowing the processor down in tool box to 1 ghz would help keep it cooler?
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do you think slowing the processor down in tool box to 1 ghz would help keep it cooler?

No, I've tried restricting it to 600MHz and it didn't make any appreciable difference. If you use Better Battery Statistics(or whatever suits you) you'll see that it actually rarely uses 1.6MHz(unless your hammering some fast paced game, not my bag so have no idea about that).

It's just the proximity of all the processors, I find it runs hottest(a relative term, it's not a problem) when I'm browsing the web.

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I had this to to fix it I got a star screw driver and lossend the three screws at the bottom of the phone put back back on job done :)

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I had this to to fix it I got a star screw driver and lossend the three screws at the bottom of the phone put back back on job done :)

Interesting, I must find that breakdown again.
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I had this to to fix it I got a star screw driver and lossend the three screws at the bottom of the phone put back back on job done :)

Great stuff going to have to try this next time I take the back off, thanks for the info. Glad it can be easily fixed :D

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Yeah I've noticed this happening occasionally, if you put the phone on standby/screen off for 5-10 minutes it tends to cool down and disappear.

I had this to to fix it I got a star screw driver and lossend the three screws at the bottom of the phone put back back on job done :)

The three screws along the bottom here (including the one with the void warranty sticker on it)?

Does loosening them just provide a little breathing room for that section of the phone?

Edited by DaveSimonH
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Yeah I've noticed this happening occasionally, if you put the phone on standby/screen off for 5-10 minutes it tends to cool down and disappear.

The three screws along the bottom here (including the one with the void warranty sticker on it)?

Does loosening them just provide a little breathing room for that section of the phone?

are they a flat head screw or do they need a specialist screw driver can not see very clearly
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I believe they are torx screws. Just be very, very careful if you use a precision flathead or philips head screwdriver on them (instead of a torx screwdriver). You could end up stripping the screws.

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are they a flat head screw or do they need a specialist screw driver can not see very clearly

From the picture(I've resisted taking the back off mine yet) they look like pentalobe screws which are what Apple use in their products(including the iPhones) but a star screwdriver should suffice. As already said, be VERY CAREFUL. You should only try a quarter turn at a time as well.
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