I’ve got a LG model: PDP50T5000 that won’t turn on... when you plug it in it clicks on a grey screen then off while flashing red light on the power indicator. On the back the steady Red light and green flashing light continues when I unplug the tv. Does anyone know any troubleshooting steps i can take? I’ve taken the back off there is no noticeable damage or missing pieces.
Is this a good question?
Rep: 781.5k
1.1k
893
2.3k
@blkice here is what LG suggest for the No picture issue:
No picture
1) Check CTRL PCB’s LED (D1~ D4).
2) Check the power or signal cable inputting into CTRL PCB.
3) Check X Board, Y Board and Z Board’s power connector.
4) Check the connector between CTRL PCB, X Board, Y Board, and Z Board respectively.
5) Measure Y Board’s output waveform with over 200MHz oscilloscope and compare it to Fig 17 below.
- Y Board measurement point : ( SUS_UP OUTPUT )
- X Board measurement point : ( SUS_DN OUTPUT )
6) Test data X Board waveform @ COF IC See Fig 34 page 26.
7) No Signal - Replace Controller PCB
Follow this flowchart and see if you can isolate the issue
I am going to make the assumption you do not have an oscilloscope. So those test you would have to skip. You do however want to take plenty of pictures of your boards and how they are interconnected. Post those with your question so that we can see what you see. Use this guide Adding images to an existing question for that. My first inclination is that you may have a bad control board.
Was this answer helpful?
Past 24 Hours: 0
Past 7 Days: 2
Past 30 Days: 3
All Time: 397
@blkice is there any pattern to the right light blinking?
by oldturkey03
Power indicator blinks 3 times and then shuts off... and once I unplug tv from the wall the steady Red light comes on for a while before shutting off...
by alicia durden