Re: Samsung PS51D550 51" Plasma - Issue? Any Help?

Gentleman,

After many attempts and allot of research my set is stuck where i was a few months later.

So i really want the set to work again so i took it to the Samsung agent and they confirmed that both X-main and Y-main is faulty. So i paid them for the parts nut now there is no y-main available anymore i can get a x-main but need both.

Has somebody found a remedy for these sets that is only five years old and now they are out of spares already.

Please

Re: Samsung PS51D550 51" Plasma - Issue? Any Help?

Hi Gents I got the transistors and replaced them.So my X-main and y-main is good and checked all transistors,caps and resistors.

I don't have any shorts on the y-main or x-main even tested without the buffer board connected.

BUT:The only way I can get a healthy green LED flash is by removing the Y-main ribbon cable running to the logic board.

Voltages

That I get is perfect VA,VS,Vscan but VE is high should be 80 and i get 105 Vdc.

Im stumped on this...

Re: Samsung PS51D550 no picture!

Hi Gents need your help please i have the same problem when i remove the ribbon cable from logic board VS,VA and Vsc is perfect.I had the x main blow transisitors and changed them.I believe this is due to VE being 150v DC instead of 85v DC. Please correct me if i wrong i measure the VE from the Y main cable running to the x main at the x main connecting point just to check before i damage the x main again. Or does the x main bring the VE down when connected at testing point on that board.

PLease advise

Re: Where to get Samsung parts...none on Ebay, Jimmy, etc..

Hi Nick did that do the trick on the plasma, I have the exact same transistors blown on my unit and still awaiting transistor spares until end of the week.

Thanks appreciate if you can let me know if it worked or if there was something else that made them bang. My dog and son got a big fright when another IGBT blew when pluggen in before repair attempt.

Regards

Re: Samsung PS51D550 51" Plasma - Issue? Any Help?



Hi gentleman I have the exact same problem here in South Africa on the X main board and really appreciate your detailed brake down of this comman problem.

I however cannot find any IRG7IA3 on google or my supplier.

Please help if this is the correct number.

Thank you in advance....