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Old 07-04-2020, 03:40 AM   #1
RooTV
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Default Sony KD-X497000D showing purple spots?

Hi Guys

Just wondering what might be wrong with this tv. I only have a pic so cant get too in-depth withe the testing.

Just after rough ideas.

The Tv is a Sony KD-X497000D

The info I have is that it is showing "purples spots" on the tv that are particularly visible on white screen.

I think it may be burned out LED's but not sure. I have had a few tv's before that have had LED issues, but it was always - 2 blown led's, dark screen - so I dont know if a tv will even light up like this if it was a few blown led's?

Ideas?
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Last edited by RooTV; 07-04-2020 at 03:53 AM..
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Old 07-04-2020, 04:01 AM   #2
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Default Re: Sony KD-X497000D showing purple spots?

Purple or blue LEDs on a TV occur when the phosphor coating has been burnt oway due to being over driven.
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Old 07-04-2020, 04:16 AM   #3
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Default Re: Sony KD-X497000D showing purple spots?

Quote:
Originally Posted by diif View Post
Purple or blue LEDs on a TV occur when the phosphor coating has been burnt oway due to being over driven.
So the led's have been set too bright and its a damaged screen and not fixable?

Last edited by RooTV; 07-04-2020 at 04:18 AM..
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Old 07-04-2020, 04:48 AM   #4
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Default Re: Sony KD-X497000D showing purple spots?

One problem is that the light emitted from the led turns blue when they have been overdriven.
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Old 07-04-2020, 04:54 AM   #5
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Default Re: Sony KD-X497000D showing purple spots?

The fix is backlight replacement if the leds have turned blue/purple, a current mod would be advisable too or at least set the backlight to as low as tolerable.

Last edited by nomoresonys; 07-04-2020 at 04:57 AM..
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Old 07-04-2020, 05:12 AM   #6
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Default Re: Sony KD-X497000D showing purple spots?

so its not a panel issue and is fixable with led replacement?
hmmm
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Old 07-04-2020, 05:18 AM   #7
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Default Re: Sony KD-X497000D showing purple spots?

Do a forum search using "purple led" as the search term and you should find plenty of info on this.
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Old 07-04-2020, 05:56 AM   #8
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Default Re: Sony KD-X497000D showing purple spots?

No not panel fault, just overdriven leds.
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Old 07-04-2020, 06:22 AM   #9
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Default Re: Sony KD-X497000D showing purple spots?

They want $150 for this tv and a glass unit it is sitting on (that MUST be taken with the TV lol) so maybe it is worth it?

49" 4K smart tv for $150 + new led's

Last edited by RooTV; 07-04-2020 at 06:30 AM..
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Old 07-04-2020, 07:22 AM   #10
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Default Re: Sony KD-X497000D showing purple spots?

Have you priced out the cost of replacement led strips?

Last edited by dick_barton; 07-04-2020 at 08:07 AM..
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Old 07-04-2020, 08:05 AM   #11
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Default Re: Sony KD-X497000D showing purple spots?

Tell m you will give them a c note and get that junk out of their way, that's ONLY if the stand is REAL nice. Because after all we have a global recession that goes with this fugging pandemic, so money is in short supply.

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Old 07-04-2020, 08:12 AM   #12
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Default Re: Sony KD-X497000D showing purple spots?

They might be a rarer commodity down under, around here they give away that type every day.
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Old 07-04-2020, 08:21 AM   #13
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Default Re: Sony KD-X497000D showing purple spots?

https://www.badcaps.net/forum/showthread.php?t=80139
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Old 07-04-2020, 02:58 PM   #14
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Default Re: Sony KD-X497000D showing purple spots?

Quote:
Originally Posted by nomoresonys View Post
They might be a rarer commodity down under,
They actually are.

Around my neck of the woods a 4 - 6yr old 50" led (non smart) would go for around $150 to $200 and thats a working one!
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Old 07-04-2020, 03:03 PM   #15
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Default Re: Sony KD-X497000D showing purple spots?

Quote:
Originally Posted by dick_barton View Post
Have you priced out the cost of replacement led strips?
Havent been able to find the right part number for this one yet.
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Old 07-04-2020, 03:48 PM   #16
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Default Re: Sony KD-X497000D showing purple spots?

That's a good question, I'm not seeing any backlight strips that match this model.
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Old 07-04-2020, 04:04 PM   #17
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Default Re: Sony KD-X497000D showing purple spots?

.

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Old 07-04-2020, 04:38 PM   #18
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Default Re: Sony KD-X497000D showing purple spots?

Might be a match there somewhere? : https://www.aliexpress.com/wholesale...strips+49+inch

Last edited by nomoresonys; 07-04-2020 at 04:46 PM..
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Old 07-04-2020, 09:54 PM   #19
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Default Re: Sony KD-X497000D showing purple spots?

But where?
Im gunna get annoyed if I have to pull it all apart to get a part number.

Just 2 chances for me to break another bloody screen
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Old 07-04-2020, 10:05 PM   #20
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Default Re: Sony KD-X497000D showing purple spots?

Like I said before, get the model number of the LCD panel.
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Basic LCD TV and Monitor troubleshooting guides.
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