eax61319402 50PJ350 YSUS

[zwarder]

Hi
Had shorted YSUS

Q24 RPJ63F3
C726 cap
Q11 K3667
R528 & R529 2.2 ohm

replaced all of these but still trips psu VS & VA are a bit low when ysus disconnected. IC301 does look a bit burnt however

ZSUS is also good as far as I can tell

Anyone could help me out on this one

[zwarder]

Re: eax61319402 50PJ350 YSUS

Well now EY727 & EY700 short they are 30F124

[nomoresonys]

Re: eax61319402 50PJ350 YSUS

Good practice is to have the y-buffer boards unhooked, til y-sus is in order, because a faulty y-sus will take out a good y-buffer and vice versa, also take y-buffers out and check for shorts, lots of how to videos on youtube if needed.

[nomoresonys]

Re: eax61319402 50PJ350 YSUS

Also want to make sure not to get counterfeit parts.

[zwarder]

Re: eax61319402 50PJ350 YSUS

Good practice is to have the y-buffer boards unhooked, til y-sus is in order, because a faulty y-sus will take out a good y-buffer and vice versa, also take y-buffers out and check for shorts, lots of how to videos on youtube if needed.

I fixed a few recently but this ones a real headache

[nomoresonys]

Re: eax61319402 50PJ350 YSUS

I hear you, it makes it so damn much harder, when it's hard find the components anymore and there's so many lowlifes selling counterfeit parts that don't work at all.

[zwarder]

Re: eax61319402 50PJ350 YSUS

The 6x 30F124 I got show as a capacitor in my TC1 tester!
I also got some 30J127 which show as an IGBT fine.
Only 2 of 6 RPJ63F3 tested good & did show a 700v insulation test.

Really some suppliers do not care

[Biruslapio]

Re: eax61319402 50PJ350 YSUS

For the 30F series, buy used z-sus boards for samsung/lg plasmas, for me it is actually cheaper than buying individual units that may or may not be fake, they are also a reliable supply of 30F131, FGD4536 and SF10A400HD(depending on the model of course), I spent around 80 USD to get 30+ original IGBTs.

The faker ones are very easily spotted when the labels and marks on the casing just don't match.

[zwarder]

Re: eax61319402 50PJ350 YSUS

Giving up on this one
Q502 & Q503 also dead
Keeps blowing Q22 & Q11
Buffer & ZSUS are good

We had lightning recently & the customer has lied
I do not have much experience in plasmas but have successfully repaired others