Hisense 42in plasma flashing blue/green pixels after 30 mins
Hi I hope you can help, we have just bought a hisense plasma second hand and are having trouble with the picture. We have wall mounted it and the picture seems fine for the first 30 mins of viewing, after this time the scrren starts to get green flashing pixels in the centre top about 6 inches patch. Then the screen will take on a blue tone after another few minutes. We are new to plasma and havent a clue what is wrong. Could it be a signal fault, we are currently viewing through a sky box, or is it because we are viewing on a standard ariel. We have tried through dvd player and the same is happening. Also when we go onto the menu we cannot access the Hue feature so cannot adjust this. Any suggestions would be gratefully received thanks
Do a master reset
1. unplug the TV from the wall
2. remove the batteries from the remote
3. wait 24 hrs
4. plug TV into the wall socket
5. install batteries in remote
6. hold power on button for minimum 10 seconds
This was given to me by the Hisense service line and worked for my TV.
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generally when you get a constant green light all is ok. these different lights indicate different problems within the tv. so the pattern of lights you mention suggests there is a fault of some kind (is there a troubleshooting section in your manual)? either way it needs to be looked at.
I had a similar problem with my LG plasma. I used the Image Sticking Minimization (Pixel Orbitor, White Wash, and Inversion) feature which is designed to prevent image burn in and ghosting. This ISM feature may be available on the Samsung or any other brand under a different name. I activated the "white wash" option for about 30 mins, the screen turns white and somehow the pixels get reset. The green noise disappeared after that. I hope this helps.Phezbuster
You most likely have image burn in on the display if it is not in a straight line. If it is in a straight line than it can be dead pixels. It is most likely the first issue I saw this same issue at work with an HP plasma TV.
The diffusion is slightly out of adjusment. This timing adjustment is difficult and on a single scan LG plasma the proper operation requires voltage settings first, then a scope to finalize the adjustment. I have good luck with this alignment by eye but have had alot of practice. This will require taking the back off and a person with the technical background to set this alignment properly. Sorry no easy fix.