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Old 11-03-2015, 05:55 AM   #30
Poor Flick
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Default Re: How a plasma display panel (PDP) works

Originally Posted by tom66 View Post
A similar mechanism called ion implantation can happen.

The PDP experiences very high energy discharges within the cell, which causes damage to the MgO structure of the cell. This damage must be compensated by adjusting the drive waveform as the panel ages, generally requiring a higher priming energy.

Manufacturers sometimes get this wrong, a good example being the LG PC1D series where the priming algorithm appears to overcompensate leading to sparkling pixels across the panel.

Pioneer's KURO 9G also has a minor issue with degradation, but it can be compensated for by adjusting the voltages for older panels. Mine has 15,000 hours, and the only issue is a small amount of red mist at the bottom of the panel on pitch black scenes. I could probably get rid of that but it's not visible on anything but pitch black images so it doesn't really bother me.

I just happened to notice this thread. Interesting subject as when I tried for my first time to repair my LG 60PA6500, and just about had it fixed until I had a rookie blunder and ran it to check for power going to the lower address buffers without the metal cover, (I thought), cooked the ICs. Obviously it was a heat sink! I regret being a dumb ass often!
My question is, would running a PDP on lower power settings in the picture quality menu help a PDP live longer? I usually run it on a medium setting and the panel is barely warm. On a high quality setting it gets toasty.
BTW Tom, many thanks again on your advice last year!
No user serviceable parts inside......really?......we'll see!
Ticking away the moments that make up a dull day......
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