Question about LG Televison & Video
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Posted on Apr 19, 2017
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Posted on Jan 02, 2017
SOURCE: black screen
This denotes a power supply issue. I would venture to say that it is the part of the supply that controls the plasma ignitor if this is a plasma TV or if this is an LCD screen it is called the back-light and inverter circuit. The power supply board would be the chief culprit in this case.
I hope this helps,
Posted on Aug 21, 2008
After reading other postings, we figured out that it was the caption box, went to menu and turned it off.
Thanks for the great site, we wouldn't have figured it out without it !
Posted on Nov 16, 2008
SOURCE: i have a 42
The fuse you have replaced would have been on the sustain board, now that it clicks indicates a problem either with the control board or the sustain board. You would need to disconnect the connector from the power board to the Y-sustain board (left of power board) to check if the Vs & Va voltages are present, if so then the power supply will be working ok & the problem will be with the previously mention boards. There is the possibility that the plasma display screen could also be faulty.
Posted on Nov 06, 2009
Sounds more like blown/exploding capacitors on the PSB-Power Supply board. No OSD-on screen display a blinking led or chatter/relay clikcing at startup is the tv going into fault protection and bypassing the startup pins. The YSUS-Main controls the pic which is attached to 2 buffer boards the YBU-upper YBL-Lower. They control the upper and lower portion of the OSD and the YSUS controls both of them. Since you're getting No OSD you need to check for blown caps on the PSB first. Unplugging the set resets the error again. So you start all over again.
Best Rgards and Semper Fi
Posted on Aug 03, 2010
Thanks for your initial troubleshooting, you've mentioned that the LED light on the right didn't lighted up, that is the SS board(AKA X-sustain board) which is already faulty that's why you've encountered that kind of symptoms. You have to replace this board to resolve the issue. Click it HERE for the replacement. Double check the part/board no of your board before ordering online.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.
Posted on Sep 23, 2011
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