Mulja tv repair portal

Equipment Repairs => PLASMA TV forum => Topic started by: samisat on October 20, 2013,04:45:02

Title: samsung PS42A457P1D
Post by: samisat on October 20, 2013,04:45:02

Hi all this plasma tv has got sound but no light on screen, screen is black. all out put volts from power supply are okey on y sus and x sus all input volts present.only i noticed y buffer's Ice even ofter 3 hours which tv was on were cold. any idea.....
thanks 

Title: Re: samsung PS42A457P1D
Post by: clark97 on October 20, 2013,11:57:03

Yes the Y-sus is prone to failure on these from memory theres 3 or 4 fets go short and take out a few smd resistors feeding them. You could also check output from T-con with a scope.

Title: Re: samsung PS42A457P1D
Post by: samisat on October 21, 2013,06:24:01

Hi mate thank you I found out a faulty died in Y sus (uf4007), have been changed and now tv work well.
Thanks for your help