Hi! My Samsung plasma TV has this problem. It reboot it tself after turn on and watch tv for 30-40 munites then suddenly it shutdown. Few seconds later the TV turn on by itself or it I unplug the power cord and plug it back in then there are picture.
I am thinking that this could related to the power board. But, isn't sure.
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Jan 9, 2014 - Uploaded by 8Jallin
Samsung 50 inch plasma wont turn on. 8Jallin ... Up next.samsung plasma tv not working, wouldn't turn on, FIXED, repair, diy - Duration: 14:56.
solder the connections to the lcd screen on the sides.. or replace the board. the resistors are the ones that need new solder. you can also replace the board or send it in to be refurbish at low cost.. fast turn around at www.tvpartsandmanuals.com or you can get the repair manual with parts
It's definitely an overheating problem if your plasma turns off by itself after a while. I would suggest to place a cooling fan near the back of it as a temporary fix.
There could be a power supply issue along with a Ysustainer board but in order to know that for sure, you should use a hair drier and blow hot air to the power supply and see if the TV turns off, if the time that the tv turns off is shorter when blowing hot air to the power supply; then is the power supply issue.
its the lower buffer card.. (y buffer lower board) they cost about $90.. i changed mine myself on my samsung hpr-4262 42 inch plasma.. pretty easy,, took approz 20 minutes.. the card has 3 ribbon cables and 3 other connectors and 1 screw.. removing all the screws out of the back pannel took the most time.. i found the repair manual for my tv on line for $13 (download PDF file) the manual had a trouble shooting section and what board to replace for each problem.. got the manual from here http://store.payloadz.com/ ordered the replacement board from www.partstore.com
I have a Samsung 50" plasma, that has been blacking out over the last 6 months. A 9/2005 set. Now its practically unwatchable as it happens 3 times in an hour. Its not heat related - I have a high volume 9" fan activated on TV power on. Turning the set offf/on usually makes it come back for a now short while. Considering to go put it in the back of my pickup and park it in front of Best Buy and discourage Samsung purchases. This is the 2nd Samsung TV I've purchased (the other a 32" tube) I gave to my folks a couple years ago and its gone bad as well. Samsung product may look good, but their video engineers are not.