When you plug in the tv you hear a click and the power light just flashes. Will not power on. Think I tracked it down to the power supply board. Test point that says 24v is reading 9v. If you hit the "reset" button on the control panel a relay clicks. Are there common failures on this board to check? Would rather repair than just replace this board. The PB output connector is not reading any voltage. The PA does read voltage for the backlight control. Backlight outputs are reading no voltage. Thinking it may be on the live ac side of board?
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Re: Mitsubishi LT-46149 No Power
Pictures of the board would help.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Mitsubishi LT-46149 No Power
Attached FilesComment
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Re: Mitsubishi LT-46149 No Power
Posted pics of the board. Any help would be appreciated.Comment
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Re: Mitsubishi LT-46149 No Power
Update. Got the service manual. Did a reset. Found out TV takes up to 60 secs to boot up before you can turn it on. Still no idea why I wasn't getting any voltage readings. Reconnected all items to the board maybe that did it. Now that it turns on I have multiple black lines, and it you press on the frame on the top middle picture goes fuzzy and dims, Bad panel?Comment
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Re: Mitsubishi LT-46149 No Power
yeah probably a tab bond issue. a pic of the screen fault?Comment
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Re: Mitsubishi LT-46149 No Power
Will put pics up later. If its a tab bond is there a way to fix? I've seen people using double sided tape and rubber tubing. Would like a better solution.Comment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
[HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:- Motherboard: LA-J871P Rev: 1B
- Model: Acer AN515-55-59MT
- S/N: NHQ7JAL00403906A973400
- SNID: 03902728734
Initial Issue
The laptop initially presented graphic issues and driver failure (Code 43) for the GPU.
After preventive maintenance (cleaning, thermal paste, etc.), it powered on normally. We disassembled it again to inspect the GPU, reassembled... -
Hi and thanks in advance for any input you might provide!
I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO
Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this... -
I was working on this CNC machine today found no keyboard functioning no control relay powering on
The screen powered on and was giving an operation error but the manual was not very clear about what the error exactly was but with a little bit of troubleshooting and finding out that the control relays not powering on and no keyboard functions we narrowed down to this one switching power supply which of course does not have any indicator LED light they are on the keyboard interface/relay controller board
Found shorted diodes on main controller relays there are 3 of them that... -
Hi everyone,
I am trying to fix a samsung washinmachine power supply main board.
I already replaced it with another one to fix the machine but i want to try understand the issue with the old board.
Therefore i hope to be able to get some help to explain what to check in order to troubleshoot.
The power supply board reference is the following: DC41-00189a
I have followed one thread (https://www.badcaps.net/forum/troubl...ingmachine-rel...
Comment