Question about Philips Televison & Video
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Posted on Jan 02, 2017
SOURCE: my panasonic tv got problem
when it is warm, shut off, then after take a rest it will automatic on again, probably you need change the on anf off switch.
How long have you had the TV?
Posted on Jul 10, 2008
SOURCE: Red Blinking Light
These types of problems are allways hard to diagnose.. If you were to power on the set and preform tests, you would think that everything was fine until the moment it shuts off.
Look on the main power board and see if you cant find the thyristor (thermal switch), those are the things that when heated will cause the set to power off for safety reasons.. They are normally placed where ever a large heatsink is. That may give you a location as to the problem and you can put a meter around its 2 pins with the set off and unplugged a couple of min after failure, if its short (0 ohms) thats not the problem, if its open, it triggered the event.
Second, you can run the set for a while and check the voltages and Ve, Va, VCC, Vsetup etc and compair to the markings on the plasma PDP sticker. If you see one is falling down over time (volts will be lost as heat) then you can isolate that portion of the supply.
Third and allways the best way to go about these problems is buy a thermal gun and moniter various spots for heat.
Its just vary hard to say, resistance could be off somewhere, diodes could be overheating as well as fets and caps. Thats why a good thermal gun can point you to exactly where the problem is.
Hope this info helps, but I would suspect the problem is on the main power supply itself and not the y sus and z sus boards side boards.
Posted on Aug 26, 2008
Sounds like you have a bad green picture tube that has failed. To check this out; remove front speaker grill, remove small panel, you will see three CRT's (pictue tubes) sticking down, remove the little board on the middle tube then restore power. If TV stays on more then likely the CRT is bad but not always the driver on board could also be bad, check voltages.
Good Luck, big IRISH.
Posted on Sep 26, 2008
Sound like you have a overheating problem. Your capacitors might have reached their end of life thus making them overheat quickly. Try to check if there is a fan inside your TV. If there is a fan, try to clean it see if that helps.
I hope this helps. Have a nice day.
Posted on Dec 15, 2009
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