My uh6150 doesn't power on at all

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LG Television

Repair guides and support for your LG TV.

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Vincent Magallon @vincentmagallon

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投稿日: 2023年10月8日

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My uh6150 doesn't power on at all

Hello. my uh6150 doesn't power on at all, i've replaced both the main and power bards, still doesn't turn on at all, even replaced the power cable. Should i swap out the T-con board as well?

Contemplating replacing the power supply board on mine, as it will not turn on at all anymore after i removed the power cable at one point to turn it off.

Here are the pics, sorry. Just getting back to this now. Both boards are the new replacements installed and of my multimeter

I do now get a blinking red LED at the bottom of the TV, after it's been plugged in. But still doesn't power on, and i've also tried other outlets

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@vincentmagallon what are the first 2 numbers for your TV model. LEt's see if we can figure this out. A bad T-con board would not prevent your TV from coming on.

oldturkey03 さんによる2023年10月8日

Hello. Thank you for responding, it is 55UH6150

Vincent Magallon さんによる2023年10月8日

@vincentmagallon Do you have a multimeter so we can check some voltages?

Andrew S さんによる2023年10月10日

Yes i do, but i don't know really how to use it, nor where to use it on these boards.

Vincent Magallon さんによる2023年10月10日

Here are the pics, sorry. Just getting back to this now. Both boards are the new replacements installed and if my multimeter

Vincent Magallon さんによる2023年12月30日

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@vincentmagallon what are the first 2 numbers for your TV model. LEt's see if we can figure this out. A bad T-con board would not prevent your TV from coming on. — oldturkey03
@vincentmagallon Do you have a multimeter so we can check some voltages? — Andrew S
Yes i do, but i don't know really how to use it, nor where to use it on these boards. — Vincent Magallon
Here are the pics, sorry. Just getting back to this now. Both boards are the new replacements installed and if my multimeter — Vincent Magallon

oldturkey03 @oldturkey03 評価: 784.7千 1.1千 894 2.3千 · Answer 1 · 2023-10-10T18:04:58-07:00

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oldturkey03 @oldturkey03

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投稿日: 2023年10月10日

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@vincentmagallon here is what the SM LG 55uh6150 Ux 55uh615a 55uh6030says to check.

We do realize that you already changed the main and the power board, but by doing this, we will all be on the same page in the same book :-)

Check your AC cord and measure the voltage on the AC connector on the board. Careful with that, this is your household current and it may zap you pretty good, if you are not cautious. Set your meter to something like 300VAC and measure both contacts. If you have power to the board, you would next measure the fuse to make sure it goes into the board. This should not be an issue with a new power board or a main board, but we need to figure out if anything is shortening it out.

For that proceed to checking the voltages as shown in the last image. Those are DC voltages. If you should have any concerns etc about doing this. Post some good pictures of your boards with your question. MAke sure they are focused and large enough so we can zoom in. We can then show you points where to place your meter probes. Also, let us know what multimeter you have or post a picture of the front of that, with your question. We can then tell you how to set it up.

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Will do so by this weekend, and update you. I truly appreciate the assistance on this.

Vincent Magallon さんによる2023年10月11日

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LG Television

My uh6150 doesn't power on at all

Update (12/30/23)

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