Lg 42lg30 ua
If I leave this TV off by unplugging it for 24 hrs when I plug it in it won't on unless I turn it on with the remote or the button on the set and it comes on normally and will stay on. If I turn it off with the remote or the button on the set it will automatically cycle back on. Most of the time it will stay on but sometimes it will only stay on for a few seconds and start the cycle again. I have replaced all of the capacitors on the power board and replaced the main board with a new one and still have the same result. It still cycles on if I disconnect the board that has the IR and ON/OFF button on the front. All of the voltages referenced on the boards are very close (+_ .05 V)when the TV is operating normally. I have scoured the internet looking for a manual with a schematic and all I can find are block diagrams which are of no help. Can someone point me in the right direction to resolve this?
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Re: Lg 42lg30 ua
Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem -
Re: Lg 42lg30 ua
I will get them together and upload them. Here they are Power board Main Board and full view.Attached FilesLast edited by nlkirchn; 11-05-2015, 04:56 PM.Comment
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Re: Lg 42lg30 ua
What is the chassis number?
FYI, here is the service manual (with circuit diagrams) for an LG 26LG30-UD, chassis LA85D:
32LG30-UA, chassis LA85A:
Last edited by fzabkar; 11-05-2015, 07:16 PM.Comment
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Re: Lg 42lg30 ua
Thanks for the link to the schematic it should lead me to a solution.Comment
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Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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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... -
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... -
Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
Pin 03 "BL_ON": 0V
Pin 04 "N/C"
Pin 05 "STBY 3.3V": 3.5V
Pin 06 "GND": N/C
Pin 07 "AC_OFF"...
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