samsung pn42c450b1d

[tocold4u2]

i put some salvaged parts on my y main and my x main.
i now have a screen that is a light grey but i cant get into service menue .
also i have no sound when i hook up a dvd player.
any ideal where/what board to look at ??

[tom66]

Re: samsung pn42c450b1d

Tried control board test patterns?

[tocold4u2]

Re: samsung pn42c450b1d

i tried to bring that up by pressing. info menue and mute.
and it wouldnt come up .the screen just. goes from a light shade of grey to a darler shade of grey.

[tocold4u2]

Re: samsung pn42c450b1d

still have no sound if i hook a dvd player up. thinking it is
its the y main issue yet. stii have just a grey screen cant get service menue to come up

[tom66]

Re: samsung pn42c450b1d

Test patterns can be done without the main board involved at all. See here:

https://www.badcaps.net/forum/showpo...61&postcount=2

[tocold4u2]

Re: samsung pn42c450b1d

still cant bring up test pattern

[tocold4u2]

Re: samsung pn42c450b1d

well this one is gona go off to the side....i think im gona
just get a new x and y main !!

[tom66]

Re: samsung pn42c450b1d

Have you checked -Vsc and Ve voltages yet?

[tocold4u2]

Re: samsung pn42c450b1d

yea it was right on with the dmm....i put another x main in and ended up blowing
the y ....im sure its a mosfet or 2. all my voltages were right on the money....

[tocold4u2]

Re: samsung pn42c450b1d

all voltages were right on the money

[tom66]

Re: samsung pn42c450b1d

You always swap BOTH X and Y-main at the same time... never separately.

[tocold4u2]

Re: samsung pn42c450b1d

yea im going to order a new x and y main....

[greddy97]

Re: samsung pn42c450b1d

Hey guys, I'm experiencing the same issue! Any update to what happened? I ordered a used X-main and Y-main off ebay, but that didnt solve the issue. When I power up the TV, I hear the Samsung tone, but no image, no menus, no nothing... I tried the test patterns last night and still nothing. Please help. I'd love to get this set working!

[greddy97]

Re: samsung pn42c450b1d

BTW it said both were in working condition on eBay before they were removed. Should I return these and order from shopjimmy?

Thanks again!

[tom66]

Re: samsung pn42c450b1d

Does your plasma panel have a subtle glow or is it completely dark?

[greddy97]

Re: samsung pn42c450b1d

Completely dark.

[greddy97]

Re: samsung pn42c450b1d

I got in touch with tech support at shopjimmy. they had me order a new y-buffer and y-sustain. I hope this solves the issues.