Thanks for the info
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Tecc1229
Member
Last Activity: 12-21-2023, 02:03 PM
Joined: 07-15-2017
Location: Kansas City, MO
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Re: TV LG 55UF6450 -- OSD ok -- AUDIO ok --- BUT NO VIDEO ON ANY INPUT-- ANY IDEAS ?
Thanks for the info...
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Re: TV LG 55UF6450 -- OSD ok -- AUDIO ok --- BUT NO VIDEO ON ANY INPUT-- ANY IDEAS ?
Not to necro an older thread, I have the same issue with little luck finding replacement boards. Looking for the revised version of the "EBT64048902". Anyone have a part# or sku for the newer version?Leave a comment:
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Re: Sharp LC- 58Q620U - Standby Light, No Backlights or Image
I agree. I am going to explore a bit more and see what I can come up with. At this point, why not. Its a learning experience
I am attaching the Data Sheet for the panel itself. In case it becomes useful for someone else....Leave a comment:
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Re: Sharp LC- 58Q620U - Standby Light, No Backlights or Image
UPDATE:
Replaced the T-Con board. Now I have full image and picture. I do have a single red vertical line. I suspect panel board short or damage.
I am going to explore taping off the clock lines to isolate the issue. Anyone happen to have a schematic for either the panel or T-Con board?Leave a comment:
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Re: Sharp LC- 58Q620U - Standby Light, No Backlights or Image
Well, the Single vertical line turned into the TV no longer booting up. Backlights still running.
Turning the TV on, the standby light will flash 20 times and stop.
Unplugged the left LVDS and the TV boots up and displays like normal with right only running. T-con failure or panel failure? Ideas?Leave a comment:
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Re: Sharp LC- 58Q620U - Standby Light, No Backlights or Image
Update: Due to the high amount of reported LED failures on these TV's, I decided to finish tearing it down. The Backlight power line did not show open. Tested each LED and did find a faulty LED.
Replaced the faulty LED and the TV is not operational again. I am going to order a full LED replacement set.
Reassembled and did find a single purple vertical line on the picture. Progress at least.
Before LED replacement, the main board would not boot up and the T-Con was clicking, indicated a power fault...Leave a comment:
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Re: Hisense H50A6250UK
While you were working with your tv before you found the issue, did your optical connection light up red, or was it off as well? I am having a similar issue, but haven't replace the main board yet.Leave a comment:
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Sharp LC- 58Q620U - Standby Light, No Backlights or Image
Hello, I have a Sharp LC- 58Q620U 58" LED 4K TV.
When you initially plug the TV into the 120V outlet, I get the initial standby red LED light. After you press the power button the red LED goes out and no other lights come. There is no backlight flash, nor image on screen. No audio with HDMI source plugged in, nor does my laptop detect another monitor plugged in. T-con board makes a clicking sound with or without LVDS cables hookup or off.
My first thought was that it had a faulty PSU. Reading voltages, I was getting a swinging voltages from the DC output from the...Last edited by Tecc1229; 09-17-2021, 10:57 AM. -
Re: New Members - please post your introductions here
Hello from the midwest! Good to be here.
I own a computer repair company in Kansas city, and always dabbling in different projects and builds. Any computer related questions, just gimme a shout.
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