Samsung pn59d530a3f no picture after power supply replacement

[Goldenmonkey]

My samsung plasma pn59d530a3f recently had a loud pop and stopped working. after opening it up, I found a blown resistor and capacitor on the power supply board. The circuit board was damaged where the resistor connects so I opted to buy a replacement board.

after installing the replacement power supply, the tv powers up but has no picture. The electronics store I bought the power supply from said the next likely culprit could be the Y Main board.

Is there a way to test the Y Main board before just buying a replacement? Or if there are other areas I should check?

any help would be appreciated.

[nomoresonys]

Re: Samsung pn59d530a3f no picture after power supply replacement

Go ahead and test the components on that y sus, the transistors on the heatsinks short out quite a bit, you can test them in circuit, best to check all the components that you can, youtube is your friend for how to videos, one of many many there: https://www.youtube.com/watch?v=p8Jf79Qv4PM

[nomoresonys]

Re: Samsung pn59d530a3f no picture after power supply replacement

Can you post a good picture of the area of the original powerboard with the damage.

[nomoresonys]

Re: Samsung pn59d530a3f no picture after power supply replacement

You will need to test the buffer boards and the other sus board too, to be thorough, again youtube for tutes.

[Goldenmonkey]

Re: Samsung pn59d530a3f no picture after power supply replacement





The original power supply with damage to resistor and capacitor

[Goldenmonkey]

Re: Samsung pn59d530a3f no picture after power supply replacement

That youtube link, and several of his other videos were very helpful in learning how to diagnose these parts, thank you.

I am currently trying to remove the y main board. It feels like it is glued to the back of the TV. I didnt want to just pry it off in fear of breaking it. Is this normal? Should I just use some force to pry it off?

[Biruslapio]

Re: Samsung pn59d530a3f no picture after power supply replacement

not glue, thermal pads, very thick and wide ones, so remove all connections before you pry it off or it may rip some cable.
just be patient, you will hear the peeling off as you pull on it, and it should come without flying off the tv.

[Goldenmonkey]

Re: Samsung pn59d530a3f no picture after power supply replacement

I was able to get it off. Several adhesive strips below it.