Hi all. I have searched the forums and found similar posts, I have specific troubleshooting I have done thats why I posted a new thread. I have a 50" LG plasma I bought in 2009. Just popped and no picture. I try to turn it on again and tries to come on, makes a buzz noise by the z sus board, then quickly shuts off. If I unplug the z board from the power board (larger wires) and control board (smaller wires) the tv works but is dim and eventually turns mostly red color. If I connect the z sus to the power board, same thing. But if I connect it back to the control board it has the problem where it will buzz and turn off. No visual damage to any components that I can see. So I figure its either the z board or control board. I just ordered the z sus since that's what makes the buzz noise. The tv is a 50PS something. Any thoughts? I can post pictures and get the full model number if someone is listening. Thank you! Stupid tv!
-
-
Re: LG pop of death - troubleshooting
I would agree with your conclusion. It's pretty typical to see a dim picture without a functioning Z-board. Replacing that should be all that's necessary.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: LG pop of death - troubleshooting
Thanks for the response. I just hope that when I change out the z sus that the control board has something messed up and causes that one to go too. Wouldn't figure that that particular connection would cause an issue...Comment
-
Re: LG pop of death - troubleshooting
I have never seen a bad control board kill a sustain. It could happen, but it would most likely be due to bad software on the control board, not a physical fault.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.Comment
-
Re: LG pop of death - troubleshooting
Ok great, thank you. Amazing how many people have had problems. Although 1080p is awesome, they don't make tvs like they used to.Comment
-
Re: LG pop of death - troubleshooting
When the Z-sus goes bad you get underdiffusion. This usually manifests itself as red or blue pixels misfiring, depending on the panel technology. Never seen it with green, but wouldn't rule it out.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.Comment
-
Hi all, I just want to share the repair of my 60PK550-UA TV set.
The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.
But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.
All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
C57: 3.30V
C61:...07-20-2023, 12:38 AM -
I have a Whirlpool Side-by-side refrigerator that is only a few years old and I am now experience a problem where the cooling coil valve that enters the refrigerator side is not opening consistently. (the freezer is perfect ice cold). I have found out the problem can be overcome by simply pulling the power for a few minutes. Upon restart it works for some period then randomly stops. In speaking with a tech they claim this issue is likely due to an issue on the main control board. So I decided to pull it and I thought one cap looked bad so I replaced all 4... I thought I had solved it but ~24 hours... -
I have been having issues with this garage door opener for a while first the range of the remote was a lot less and sometimes it would start to go down and stop for no reason that I could find and would every once in awhile to start with then it started going more frequently until last Saturday when I opened the garage door it refused to close so I cranked up force all the way maximum limit this did not work also the sensor on one side that has a green and red lights that are supposed to be on when the door is open and there are no obstacles in the way on the original board the only light that...
-
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... -
I am looking at the option of replacing my control/driver board to one with HDMI and/or Display port input on a 2K LED (I think IPS) screen.
The display is Samsung LTM270DL07.
I have tried using the model number to search for a compatible control/driver board but so far my efforts have been futile.
I am looking for inputs on what board could potentially be used for my display.
Attached are pictures of the display label information and connectors (CON30 CON40 only) and pictures of the current control board.
Also attached is a technical...03-14-2023, 08:52 PM
Comment