Samsung PS51e450 strange picture problem

[ellah]

Hi Guys,

I got a problem with weird picture, tv just out of warranty. It looks like fuzzy snow and you can see previous static images from lets say tv menu when looking at whites area, it looks like it is keep holding in the background, but the main issue is that there are dots everywhere and image is distorted.

Now, I checked VS and VA on power supply and they are perfect 201 and 58, VScan on Y board is also perfect stable 180.
Any ideas what could be? Shall I replace y and x board now both ?

[tom66]

Re: Samsung PS51e450 strange picture problem

Is Ve OK? Can be problem with X- or Y-main initialisation ramps, have you got a scope?

[ellah]

Re: Samsung PS51e450 strange picture problem

Nope I don't. Do not know actually what value VE should be, where can I find this, no info on sticker...

Sorry I am a beginner in fixing plasma's, so thanks for your patience This VE is on YSUS board right?

[tom66]

Re: Samsung PS51e450 strange picture problem

Ve is used by X-main but may be generated by either board.
Approx range 80-120V.

[ellah]

Re: Samsung PS51e450 strange picture problem

If not in range shall I just replace both boards? Would it be easiest way?

[tom66]

Re: Samsung PS51e450 strange picture problem

Do you have an oscope to check?

[ellah]

Re: Samsung PS51e450 strange picture problem

sorry, no.

[tom66]

Re: Samsung PS51e450 strange picture problem

Then I guess you will have to try both boards.

[ellah]

Re: Samsung PS51e450 strange picture problem

thanks then, I will try and let know