Samsung PS-50C91H 50'' Plasma tv

[ReeceyBurger123]

Re: Samsung PS-50C91H 50'' Plasma tv

Mares well get the beast up and working. Have you fixed the Ymain ? Also I suggest you resolder a few things on the Psu after the susboard repair.

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

Mares well get the beast up and working. Have you fixed the Ymain ? Also I suggest you resolder a few things on the Psu after the susboard repair.

Not yet as I was thinking on just dumping it.
but those buffers look cheap enough.

[ReeceyBurger123]

Re: Samsung PS-50C91H 50'' Plasma tv

Ahh why after repair add some fans and heatsinks to the Ysus and scan IC's these are rock solid Tv's.

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

Ahh why after repair add some fans and heatsinks to the Ysus and scan IC's these are rock solid Tv's.

"Ahh why" good question mainly because i put it in too hard basket even though it aint that hard.

"after repair add some fans and heatsinks to the Ysus and scan IC's"
i understand scan ic's on the y upper and lower ic's.
but what will i be heatsinking on the y main(Ysus)

I have lost the old mosfets from the lower drive would you be able to tell me what they are please
.

[ReeceyBurger123]

Re: Samsung PS-50C91H 50'' Plasma tv

Will link video after showing what parts they are.

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

Thank you.

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

Q5501 - STB20NK50Z newer replacement STB21NK50Z
Q5500 - k2837
Q5304 - 88n30w
Q5303 - 88n30w
Q5302 - 88n30w
Q5306 - 88n30w

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

i now have two good lower boards and two bad upper boards.
New upper buffer is bad too.

[ReeceyBurger123]

Re: Samsung PS-50C91H 50'' Plasma tv

Are you sure your Ysus isnt killing it ? Did you replace the controller for the 88n30w fets ? I would do so as when they fail sometimes the controller keeps them on at full whack like its running Vset up ramp which kills the buffer. Way to test this is seeing if the buffers are getting very hot and no image if so unplug it straight away if you dont Ydrive kills the buffer. Sometimes it will get image but be stuck on a very washed out white picture with lines in the image appearing.

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

This is straight out of package still waiting for parts to fix ysus.
these boards were pulled from cracked screen

[joshnz]

Re: Samsung PS-50C91H 50'' Plasma tv

just replaced parts on y main can i try it without buffers connected?