Re: LG 50PA4500 Won't Respond
But it held up for 20 minutes. Is the no input detection a possibility of a bad main board as well? If not is the input only processed on the input board....
bodine1187
B87
Last Activity: 10-24-2016, 02:39 PM
Joined: 12-04-2014
Location: Grovetown, GA
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Re: LG 50PA4500 Won't Respond
Bump, still no solution...Leave a comment:
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Re: LG 50PA4500 Won't Respond
Thanks, I haven't retested this. I plan on it, but I'm 99% sure it will result in bad main again. What I'm asking is why it went bad again within 20 minutes of connecting it up and why did I get no input signal?...Leave a comment:
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Re: LG 50PA4500 Won't Respond
Bump, I really need some help here!!Leave a comment:
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LG 50PA4500 Won't Respond
So I have an LG 50PA4500 that won't respond to anything. Has a continuous backlight when plugged in. No sound, no picture, no response, nothing. A year or two back we had a bad storm that blew out the input board due to improper grounding on my Satellite dish. I changed the board, and it worked great since then. About 2 months ago we had another bad storm, while I was out of town, that turned the TV like it is now. No sound, no picture, no response, and continuous backlight when plugged in. I did the logic board test sequence and it tested good. So I replaced the logic board. For the first 20...Last edited by bodine1187; 10-07-2016, 11:29 AM. -
Re: Help Samsung PN43D490A1D
Not home today and TV has been sitting for a while. Last status update was X -Main replaced. Software updated. Now TV will randomly shut off and give me red blinking LEDs for a while. Powers up an hour or two later. On a road trip today and tomorrow. I will pull Y-Main when I get home. How do I test heat sink components? Testing for shorts or continuity between components?
Thanks everyone for the help!...Leave a comment:
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Re: Help Samsung PN43D490A1D
Got my X Main in today. Connected it up and clicking has stopped. Now the red led just blinks. No power, no sounds, nothing. Red Led blinks double blinking 5 times and then solid. Repeats this indefinitely.Leave a comment:
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Re: Help Samsung PN43D490A1D
Ok so did a continuity test I found on Just Answer and here it is...X Main connected to Y main. Test continuity from Vs to GND on Connecter from Y main to X Main at X Main. Showed a short. Remove Connector going to X main. Test Again...OK. Went to X Main. Removed board from TV. Test from VS pin to GND pin on incoming connector with everything removed. Short. My guess is bad X Main.. What's everyone's thoughts? Seems logical to me but just want to be sure...Any other tests I can perform to check if another component is frying the X Main? Any way to repair...Leave a comment:
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Re: Help Samsung PN43D490A1D
I have disconnected both X and Y from the board to isolate them and the unit stops the clicking. However, according to Tom66 reference troubleshooting fast track guide this is normal because the SMPS actually will not even allow power through without the X and Y connected on the 2010 and 2011 models. Also unfortunately this unit doesn't have a startup chime to be able to tell if audio is on or not.Leave a comment:
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Re: Help Samsung PN43D490A1D
Activating Power and Logic Board Test Patterns with Jumper resulted in faster double clicking 3 times. Click Click, pause, Click Click, pause, Click Click, nothing...Still nothing on screen.Leave a comment:
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Re: Help Samsung PN43D490A1D
Thanks jhd2112! I have downloaded the fast track manual and followed. I am getting .020 volts on my STBY Pin at startup...as the TV clicks it jumps a bit but never the same amount...I'm afraid it may not be enough time between the power cycling to get a voltage.Leave a comment:
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Help Samsung PN43D490A1D
Hi all, I have a Samsung PN43D490A1D Plasma. Shut off randomly one day. Does the standard clicking but of course no bad caps. My first thought is X Main but want to ensure I'm not just taking $90 stabs at this thing. I have soldering tools, multimeter, and most common tools at my disposal but don't know a ton about circuitry. Pictures are below. Please help me take a smart organized approach to this troubleshooting.... -
Re: New Members - please post your introductions here
Hi all! My name is Andrew. Born and raised in Smyrna, Delaware but now live just outside of Augusta, GA in a little town named Grovetown. I've always been one to tinker with electronics. I love forums like this because there is no better way to learn than from your own or someone else's experience. I came across this page looking for a solution to a Plasma TV problem but plan on sticking around for a while. Looks like there is lots to learn on here and a good group of active members. I am by trade a network engineer but enjoy...Leave a comment:
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