lg 60 ph670v dead clicking relay

[jimbofz]

what a life
one day a 24inch pana lcd light as a feather then next this monster ,
i have to stand on a stool to see my mirror at the back of my bench .
this lg 60 plasma ,relay continuous clicking,
i soon traced fault to y sus board short cct on the vs .
i removed board to do cold checks ,the 6 mosfets igbt srjp30h 2a were s/c
q402 q412 q565 q403 q564 q569 .
also q505 fet k8a60da .
i soldered the coils that can go dry l441 l442
i checked the blue disc ceramic caps ,as re Alisters post where his blew up
after rebuilding ,tea went one way dog went the other

im worried re the quality of replacements for these rjp30h2a,as ive read on here that some from china will fail ,so i need to ask where to source good replacements ,or equivalents
ive looked for repair kit of parts for this y-sus board ,no luck
and replacement board type ebr75455701 not available
I have tried to avoid plasmas in the past as my back cant take it,
but as this is a favour for local community centre i stepped up and decided to have a go .
Is there anyone out there who has experience with these lg plasmas ,i cant understand why there is such a high component count that has failed
i will post pics pic2 shows one rjp30h 2a removed the others i unsoldered the legs

[tvtimmy]

Re: lg 60 ph670v dead clicking relay

Utsource. They have mostly used parts now. I never got any fakes from them.

[jimbofz]

Re: lg 60 ph670v dead clicking relay

is it normal for such high component count failure on these plasmas ?
ive no experience on these monsters

[tvtimmy]

Re: lg 60 ph670v dead clicking relay

Yes. They use a lot of power. One gets weak and it puts a strain on the rest of them.

[jimbofz]

Re: lg 60 ph670v dead clicking relay

Yes. They use a lot of power. One gets weak and it puts a strain on the rest of them.

thanks,
that makes sense ,
before i order parts im checking the buffer board ic,s
as i believe the top one is common to fail , on these lg models

[jimbofz]

Re: lg 60 ph670v dead clicking relay

buffer boards check ok,no shorts . carefully refitted
also found on y sus board surface mount diode d603 sc its a ES1G ?

[R_J]

Re: lg 60 ph670v dead clicking relay

buffer boards check ok,no shorts . carefully refitted
also found on y sus board surface mount diode d603 sc its a ES1G ?

Were you asking for the ES1G spec? if yes, here it is.

[jimbofz]

Re: lg 60 ph670v dead clicking relay

thanks i have a few scrap plasma y sus boards just wondered if f47f , or 4a75
will do as replacement?

[jimbofz]

Re: lg 60 ph670v dead clicking relay

can anyone who has repaired one of these 60inch plasmas ,y sus boards,
tell me where they bought replacement igbts ?
the only ones i can buy are from china,
and they are known to be counerfeit
i need to get this monster out from under my feet