Solved

3mm black spot on my plasma screen when certain films play (why)

Posted on 2008-10-09
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Last Modified: 2013-11-06
I have a 42 inch Hitachi plasma screen. I notice that on some movies, i get a black patch, very small but you
can see it with the naked eye.

Think is, put on sky 1 or news or most other things and you don't get it but some films, you get it.

What is the reason for this and what is it. I have a 5 year gte with john lewis, so is it something that i should be worried about and take it back for.
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Question by:nathan1038
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Expert Comment

by:DavidESL
ID: 22677128
It could e a cluster of dead or stuck pixels. but they would be visible all the time not just of certain sources.
If it annoys you I would take advantage of your warranty and have an engineer look at it.
Dead pixels are only covered by warranty if there are more than the manufacturers tollerance policy which varies from one to the next or if they are alot in a given area which sounds like it could be your problem.

give JL a call some places will just accept a return based on dead pixel issues and some will end it to the Manufacturuer for evaluation.

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Author Comment

by:nathan1038
ID: 22697373
I noticed something - It happens when I have FILM 4 on (or a film is playing on film 4. -

ALways in the same place - I don't understand it as, said above - how can it be a dead pixel if it is 'alive'
most of the time.

The way film4 broadcast their film's !! who knows - do u ?
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Accepted Solution

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DavidESL earned 500 total points
ID: 22700710
it's very odd that it is just on one channel and you're right if it was dead pixels then they would stay dead. Are you able to connect a computer to your screen? If you do you can use something like this to make sure there are no pixel issues
http://www.softpedia.com/get/System/Benchmarks/Dead-Pixel-Tester.shtml

but given that it's only on one channel it's highly unlikely.
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