Tried by checking any dead short between Y buffer board input socket & the output socket of the Y buffer board as instructed in the youtube link using a DMM. Couldn't find any dead short.
a) Any idea of checking the supply voltages on the Y buffer board ?? their values & pinouts on Y buffer board?? So that it can be checked in the present fault condition so as to confirm that there is atleast no power supply short on Y buffer board???
b) As already mentioned, the Vs & Va voltages are momentarily generated to correct values at power ON to TV ( without switching ON the...

Thanks for your kind feedback. I will definitely study it.

Hello Everyone

Hello,
I am having Samsung PS51E550 Plasma TV. While the TV was working, a crackling sound heard & video went off with audio still ON. After switching it off & ON, the red LED on TV blinks six times & then off.
Opened TV cover & observed foll
a) Green LED on the small PCB blinks at @5-6sec ON & off for 3-4 secs. Red LED on logic board ON
b)Vs & Va on power supply board raises momentarily to 209v & 58v resp & then drops.
c) Cold test on Y-main board shows all 3 pins of FGPF4536 IGBT short to Grnd.
How to confirm Y -Buffer board...