Hello,
The issue you describe is consistent with a power supply board
issue. This is the board where the AC goes to. This problem may have
occurred as a result of irregular power supply, or excess power supply
or power surge.
The TV is receiving current but cannot circulate or
transfer the current to other necessary part of the TV because of the
defective power supply board. You might be lucky it's just a blow fuse.
Also a defective transformer can cause your TV not to power on.
All these can be checked on the power supply board.
But
more often bad capacitors causes problem on the power supply board. I
do not think the power board needs replacement, rather those defective
capacitors is causing this issue. Open unit up and take a look at the
power supply board.You will probably see one or more electrolytic filter
capacitors that are bulged up in the top-not perfectly flat like the
others.
The value of these capacitors will be different, most likely
they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You
can replace them with same values but I would recommend the voltage
rating to be higher(like 35V for an original 25V) for reliability
purposes.
What happens is,these bulged top capacitors will cause a
low and unfiltered DC voltage=main board will malfunction(the relay will
keep clicking until the caps are holding enough charge to bring the
voltage up over a threshold point).
You can buy these capacitors at
any Fry's or Radioshack store or you can order them online at vendors
like "mcmelectronics.com"(look for electrolytic capacitors). After
replacing these capacitor(capacitors) most likely the normal operation
will be restored. Or you can by a refurbished complete power board to
save you some stress.
Note: There may be also some other causes for
this symptom ,like a defective T con board ,or main board,but the bulged
top capacitors are the most common cause for this issue.
If you
don't know about TV repairers, take the TV to the nearest repairman to
fix the fault for you. Also, note that TV stores a lot of current, so
wait a while before opening the TV back cover.
I hope this helps.
Good luck.
SOURCE: Thin Red Line on LCD TV
I had a similar problem with my LCD screen TV, and to my dismay, my warranty just ran out. A thin red line began to appear on the right side of the screen, and since many online and expert sources pretty much say replace the expensive LCD screen or get a professional to fix it (in which I suspect to be a business plot to get people to go to pricey experts), I decided to look for other possible alternatives.
Here is some tips/solutions I was given (and it worked! at least for me):
1) Turn off the LCD and unplug the power source and let it rest for 5-10 minutes. Turn it back on and see if it disappears or improve. (This is the one I used.)
2) While turned off, try jiggling gently all chords connected to the TV (cables, power chords, etc.); you could even try unplugging and replugging the chords/cables. Turn the TV back on and see if the red line disappeared or improve. (This is the one I heard worked for others.)
If the above doesn't work then I'm afraid you do have a bad panel on your screen and will need to call in the experts or get a new TV. I hope this will help. Best Wishes.
SOURCE: when i turn my tv on the screen flashes digital then turns off
Basically, the TV is trying to power up the screen. If it fail to do so, the TV will automatically turn itself off to protect other part from being damaged inside. The problem is going to be the Backlight Inverter Board. It's the circuit board that supplies power to the screen. You can usually find a replacement board at a good price at Shopjimmy.com
Testimonial: "thanks for the help i was able to compare prices for when i take it to the tv repair guy so he dosnt screw me on the cost of repair!"
SOURCE: Sylvania LC320SS8 32 in. LCD Television Hi my
The light staying on is afterburn or power stored in a capacitor to start up the solenoid.
The protection circuit has been invoked to protect other components from being burned out. This unit needs professional intervention.
Unplugging and leaving for a few hours will not fix it it will merely delay the inevitable.I suggest it is taken for repair ASAP and refrain from trying to run it to prevent major damage or even fire.
Please remember to rate our help++++Thanks for using FIXYA
Testimonial: "thank you for the advise keep up the good work"
SOURCE: 46 inch Sony flat panel lcd has vertical red and
If the screen works for a short while and then completely fails once the TV warms up you have a problem with the main unit video board or the LCD control logic board. Most often if the picture cuts out but audio continues to work the logic board is over heating and should be replaced. However if the picture cuts out and audio shuts off as well then its your video input board.
SOURCE: After punching some of the
you'll need to do a master reset of the device check link -->
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THE RELAY ON THE POWER BOARD SHOULD DROP OUT AFTER POWER UP, STAND-BY MODE, WAITING FOR THE POWER BUTTON (OR REMOTE ON) TO BE ACTIVATED, BUT THE RELAY IS STAYING ACTIVATED.
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