Hi, I have a 42" LG SD Plasma TV that is 5 years old (model PX423RVC-TA). A week a go the picture went pink / purple even on the OSD on any input, this was intemittanty. Now the their is no picture, but sound! I have read that this could be the YSUS board?? I have checked the boards and there are no buldging caps etc. With the fault originally being pink/purple to good and then no picture, could this be a capacitor problem or would it be the chip? Thanks Paul

Jerry Greenberg

• 1691 Answers
• Posted on May 15, 2008

SOURCE: LG Plasma Problem

This could be the main drive board failed, or the plasma display backplane has a defect. These types of repairs are generaly fairly expensive.

I would be considering to get an estimate just in case it is simple fault. But, if the repair will cost more than a few hundred dollars, I would strongly suggest a new set. Also, servicing an older set is a gamble in case something else will soon fail.


Jerry G.

SOURCE: Philips Plasma 42" - constant purple haze

all philips plasma sets have issues with overheating heatsinks.
any heatsink that burns you upon contact is a recipe for disaster.

using cooling fans on these overheating parts will generally provide
great reliability in the long rung.

SOURCE: ysus board

the mainboard, controls the audio, Tv Tuners, Vga , HDMI, S- Video inputs.

The Y sus or (Y-Mainboard ) Is used to control the Panel (LCD) Video, it has 2 buffers that contol h/v lines in upper & lower regions.

SOURCE: PINK SCREEN ON DAEWOO PLASMA TV

Sounds like your panel might be going out or a faulty video card. This is the first time I have heard of a solid pink screen on a plasma. Usually this happens on LCDs, though they sometimes go white and stay white, which does signal a bad panel. tv needs repair

SOURCE: pink vertical line down my 42 inch digital plasma

I do believe the Panel is bad and needs to be replaced. Check with the manfacture to confirm this.