Hello, need some ideas on fixing tv, so got tv with no picture, checked ceramic caps in lcd, found one bad, replaced, got picture back, in some time no picture again, checked all caps, looks good, when I disconnect tcon, turn on tv, and plug in tcon, picture is ok, and running with no issues, trued different tcon, same symptoms. any ideas on that?
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Re: LG smart tv 65UH6030 4k No picture
Did you try a factory reset? if that don't work try a firmware update if you didn't already. -
Re: LG smart tv 65UH6030 4k No picture
Yeah, tried upgrade, tried resetComment
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Re: LG smart tv 65UH6030 4k No picture
Wonder if something got borked up on the mainboard, eeprom/spi/nand?Comment
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Re: LG smart tv 65UH6030 4k No picture
TV fixed, there was one bad mosfet (12V T-Con line) on main board (was giving 7.8V in standby), after replacement TV is back to lifeComment
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Re: LG smart tv 65UH6030 4k No picture
Nice fix, glad to hear it, another save.
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Re: LG smart tv 65UH6030 4k No picture
Not sure why these LCD panel tabs caps keep failing. I found one on mine that's on a 16V rail that fails. All the output voltages on the TCON were 0V, when that 1/4 section of the tabs was connected. Luckily only a handful of caps to try and I got lucky too. TV is up and running.Comment
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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... -
Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side... -
Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.
The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.
Original T-con:
Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.
First replacement T-con:
I thought it might be t-con and ordered new t-con from china(supposedly tested)... -
This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.
Problem
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode... -
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