SOURCE: My TV won't turn on
Unplug it plug it back make sure it does't have a main switch on it at the bottom. If your a novice call a lg service center.
SOURCE: Won't turn on
There is a problem with main supply board .The electronic part called capacitor 2200uf 10v .There are 4 of them on that board when they all get defective thats where the problem is.Want to know more can email me.
SOURCE: won't turn on at all i
Check to see if there is a fuse holder right where the power cord enters the back of the tv. If there is one there it should only have 1 screw at most holding the cover on. Obviously unplug power cord before checking.
SOURCE: I have a 26" flat
Hello,
yes, it could be a power surge,
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.
Regards.
993 views
Usually answered in minutes!
×