It turns off after it's been on for a while. Sometimes I can still here the TV program. I turn it on, it styas for a few seconds and then off. Green light still shows. If I leave it for a half an hour, and turn it back on, it stays on for 1/2 hours and goes off again.
This is an issue with IC 803 on the Z board. This is a 3.3 V regulator that supplies this voltage to the slot card cage. Most input boards use this voltage EXCEPT the component board which is why it keeps playing along whike the DVI, HDMI, or composite signals will cut out after warm-up.
This is a surface mount multi-pin IC and is a bit tricky to replace. The entire board is PN# TNPA3198xx with suffix determined by what model 7 series plasma you have.
This was a problem from around Nov. 2004 to Mar. 2005
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Feb 25, 2015 - Uploaded by Awesome Things
JVC LT-46AM73 LCD TV won't turn on after power outage. ...LCD & LED TV Repair - No Image & Blank Black ScreenFlashlight Test - How to ...
This idea may be worth a try. Look at the buttons on your remote. If you see a button that is marked "TV" give that button a push and then give the "Power" button a push. Wait for a while! sometimes this takes a while to turn the TV on or off. You may have to do this a couple of times depending if the power was off or on when you started doing this. If you started with the set off, sometimes it takes a while for the set to turn on.
It sounds to be a panel fault. Contact any service technician, and make it sure. If you wish to get some screen-shots about faulty displays http://electronicshelponline.blogspot.com/ check this link. Pull up previous posts there, either by its left side bar,
or view it in Timslide option.
Take off the speaker grill and the particle board just behind it. You'll find a block with six knobs. The 3 bottom knobs can be adjusted ever so slightly to fix your problem. Do it very slowly. You wan to adjust the center knob for green. Turn it until the lines go away. But again, do it very slowly. You're adjusting the voltage to the green tube. Do it too fast and you can damage it.