My suggestion would be to go the section marked TV repair, not vacuum repairs.
SOURCE: TV won't turn on.
The problem is the digital main board if you can get ashop to order it for you its easy to replace yourself four screws and three or four plug in connectors.
SOURCE: tv comes on, green light flashes several times,
common problem with that model is the backlight inverter, 1 or more of the six transformers may be bad.also check for bad capacitors.the tedious way to check is unplug each and plug in each one at a time but unplug the power from the tv each time you check one or you will get a nice jolt. the one that doesnt light the lamp is bad.or take each transformer off and check the primary and secondary coils if you find one open coil. the transformers cost between $8 and $20 each.it has a substitute part.
SOURCE: Red stand by light flashs. TV will not turn on.
It is in safety shutdown which can be due to bad power supply (bad caps, blown components), or it is detecting shorted circuits so it goes into shutdown mode. It will require in-depth troubleshooting.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: http://interliquidparts.com/
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
SOURCE: Tv was working fine,no problems! Then went to
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.
First, remove the power cord from the wall, wait for about 5mins, then plug it back into the back and turn the TV on. If it still doesn't turn on, press the ch+ or Ch- button on the TV. If this still doesn't help, then it confirms that the TV has developed a power problem.
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.
Regards.
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