TVs & Home Theaters forum

Question

why be plasma-phobic?

by jcosler / April 28, 2013 2:45 PM PDT
burn in -- I figure I can handle that! won't be an issue.

cracked screens -- how big a concern is this?

what other issues r there with plasmas?

Somebody told me today that one has to replace the screen in 5(?) years. Is that true? and what does it mean?
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All Answers

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Answer
Cracked.
by R. Proffitt Forum moderator / April 29, 2013 12:07 AM PDT
In reply to: why be plasma-phobic?

It's unclear what is going on with the cracked screens. You can read what folk post in many forums but I will not enter into a discussion with folk about this because they have an issue and I can't help them. We see the posts but it's unclear what the cause is. If you say it's impact they will tell you they didn't, if it's a side effect of mass manufacturing then the makers are silent.

For now here's what I know. If it's a star shape, it's impact. If its some long single crack, the maker might replace it as a defect.

As you can find out how plasma and LCD screens differ, I won't detail that here. But imaging those that stretch their budget with a many thousand buck set and then this happens and there is no warranty. They will explode and lash out at anyone that discusses the subject.

I can understand that.
Bob

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Answer
burn in isn't totally eliminated, but...
by Pepe7 / April 29, 2013 12:37 AM PDT
In reply to: why be plasma-phobic?

...as you have pointed out, there's no reason why an adult cannot take care of a product and do things to avoid it.

Cracked screens are mostly coming from transport/handling related issues, and not as often from manufacturing defects. It's no more of an issue w/ plasma in this regard than it is w/ LCD/LED.

No, do not listen to kids on the interwebs, or hourly employees at Best Buy or Wally World. The screen does not need to be replaced.

Other issues w/ plasma include heat sometimes, if you do not place your device where it may be properly dissipated.

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Answer
Fragile Handle with care
by mjd420nova / April 30, 2013 12:13 PM PDT
In reply to: why be plasma-phobic?

Ever wrestled with a 36 inch CRT TV? Takes at least two gorillas. Now, the first sets were the plasma type and growing pains abounded. LCD sets quickly followed and LED soon thereafter. Each in succession lighter for their size and more fragile. Plasma sets have heat as a by product of the 60 volt power supply for the "glow" potential and that heat is also present on the tube(s) themselves. Burn in can be achieved by those intent on doing so, otherwise not a factor for present sets. LCD sets are not subject to burn in, more likely to get a stuck pixel. Plasma units will exhibit unique failures that have started with a single pixel, not noticable at first, but it multiplies and grows into bigger and bigger blocks. Some early units that had inadequate ventilation and were getting hot enough to melt the flexible trace ribbon cables. Not acceeptable, who ever heard of a fan on TV, of any kind. Maybe a projector needs it, loads of heat there. Environments and ON times(duty cycle) play the biggest part, regardless of the mfgr or type in determining the "LIFE" of a TV.

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