Samsung PS50Q96HDX Horizontal Lines

[pic_whiz]

Hi All,

I'm hoping for a little assistance with the above plasma.

The set arrived with a glowing Buffer IC on top board (2nd from top), so proceeded to replace and also rebuild the YSUS board with new FET's etc. Set now runs OK, but has two horizontal lines across the top part of the screen at approx 1cm apart. The lines are not black but almost appear to be inverted. (see attached Pics)

Any ideas?

Cheers,

Matt

[tom66]

Re: Samsung PS50Q96HDX Horizontal Lines

Check soldering for that buffer IC - joined pins and pins not connected.

[pic_whiz]

Re: Samsung PS50Q96HDX Horizontal Lines

Thanks Tom,

I couldn't see any shorts, but some of the pins looked a bit light on the solder side. Re-soldered all the pins again and it now works a treat!

Thanks once again,

Matt

[tom66]

Re: Samsung PS50Q96HDX Horizontal Lines

Great to hear. Did you put the insulating gunk on the pins after soldering too? That is important, otherwise humid air might lead to blown buffer IC.

[pic_whiz]

Re: Samsung PS50Q96HDX Horizontal Lines

Yes Tom, all gummed up again now.

It took longer to remove the silicone than to re-solder the IC again..a true PITA.

Cheers,

Matt