I have a HP PL4260N that works fine except for a whiteish hazy patch that will show up on the screen in various spots at times. Also when I have a picture up that is mostly white, like this web page, I can hear a buzzing sound from the TV. I was told that it is possible the power converter. Any input you can give will be greatly appreciated.

SOURCE: hp 42 plasma tv cptoh 0602 I get sound but no picture

I had the same problem today, Hp wanted $629+tax to fix. With a little mechanical ablity anyone can fix this.
1. remove back covers
2. left-hand side is the video board
3. two white fuses
4. replace

this fixed mine and they only cost $1.50 each

SOURCE: Black screen on HP PL4260N 42? Plasma HDTV

The problem is the "Y-SUS" board. It is inside the set on the left side with several aluminum heat sinks, under the left side brace bar. You can order this board from Union Electronics at www.ued.com .Search for part number: TNPA3243AB-PA

It lists for about 115$

SOURCE: HP PL4260N Black Screen

To bad it is off warrenty

SOURCE: Hp 42 plasma tv cptoh 0602 specs all the time and wavy sd video

Mine has done this from day one, appears to be a resolution problem. All I do is go to a HD channel let it tune in and then go back the the SD channel and don't have to worry about it until next time the power has cycled.

SOURCE: Some troubleshooting help please.

The part that caused the fuse to blow is the hybrid that is mounted underneath the heatsink on the YSUS and ZSUS boards. The part used on these boards might be YPPD-J017C or YPPD-J018C, in about 90% of the time, replacing these hybrids fixes the plasmas with no video but good audio. Since VS and GND is shorted, that means that the hybrid has shorted internally. Most service techs would rather replace the entire YSUS or ZSUS boards since the hybrids are very difficult to remove.
Let me know if you require further assistance.

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