Re: LG 47G2 LCD - has backlight, but no video
Got to agree sound panel failure.
Got to agree sound panel failure.
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Ribbons
What would have been the proper behavior that the panel should have exhibited with each ribbon individually unplugged?Comment
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broken question
Outside of being cracked, what causes the panel to go bad like that?Comment
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Happy ending
At any rate, the happy ending is that I was able to sell this for parts to someone who could use it and earn some money to put toward a different one.Comment
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Hi There,
This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.
After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.
More Details
TV Model - LG OLED77G1PUA
Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt... -
this tv is throwing me for a loop. do samsung tvs no longer have the backlight self test feature built into the power supply?
i tested the backlight with my LED tester and it lights up both strips. one of them reads 100v and the other reads 63.7v.
unplugged mainboard from power supply but left backlight plugged in, and then plugged psu wall power in. expected to see backlights light up but see nothing.
according to how ive diagnosed in the past, this would almost always be a bad power supply. replacement power supply was cheap like 20$ from ebay. but still i get not even... -
Full model of the TV is 65UJ6300-UA.BUSYLOR. TV was given to me by a relative as non-operational so I'm trying to get it working so I have a nice cheap upgrade for my living room. This is my first TV repair so if it sounds a little like I know what I'm talking about, I don't.
TV turns on and has audio, but backlight doesn't turn on. Getting 230v from LED+ to chassis. Also can't see anything with flashlight test. Another forum suggested I replace the LED strips because that's the most common failure on LG TV's and the flashlight test doesn't always show results.
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I have an LG 34UM68 with board EAX66876002 but it has issues with not working correctly.
It powers on, backlight comes on, but there is no OSD shown, and no video shown on the screen.
I checked over the board for any obvious visual damage, and everything looked OK.
I then took a dump of the main SPI Flash chip.
I tried to take a dump from the EEPROM, but it would sometimes read data correctly, and other times would had obvious reading problems.
I managed to get a dump from it which somewhat resembled correct data - part of the... -
hi
i have a samsung lcd tv
it powers on with sound and backlight but no picture
all voltages from PS are good 12v 3.3v and 5v
whats odd is that at the tcon i tested voltage across the fuse on the tcon and i get 0v
i figured main board issue..so i ordered a used main board....when i put replacement main board in i still have same issue
no 12v at the tcon fuse
i disconnect the panel ribbon cables to rule out any panel issues and i still have no 12v at the tcon fuse
the odds of having 2...
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