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samsung y-sus PS50C96HDX    
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zookeepertoo



Joined: 11 Jun 2011
Posts: 3
Location: uk

PostPosted: Sat Jun 11, 2011 12:06 pm    Post subject: samsung y-sus PS50C96HDX Reply with quote

hi, on my y-sus board 3 of the 4 mosfets (748228) have blown. I have removed all 4 and am now looking for other defective parts on the board. Strangely the area surrounding the mosfets when the board is powered up shows predominantly a - (negative) 192v and in a few places -(negative) 67v. This includes the tops of the capacitors around that area of the board. Has anybody any idea which other components to look at to find the faults now please. many thanks for looking Dave.



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Last edited by zookeepertoo on Sun Jun 12, 2011 8:08 am; edited 1 time in total
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kuhurdler



Joined: 28 Dec 2006
Posts: 2862
Location: Overland Park, KS

PostPosted: Sat Jun 11, 2011 4:13 pm    Post subject: Reply with quote

model number?
zookeepertoo



Joined: 11 Jun 2011
Posts: 3
Location: uk

PostPosted: Sat Jun 11, 2011 4:59 pm    Post subject: Reply with quote

ps50c96hdx

850hw-yb02

lj41-05120a
revision 1.3
kuhurdler



Joined: 28 Dec 2006
Posts: 2862
Location: Overland Park, KS

PostPosted: Sun Jun 12, 2011 11:50 am    Post subject: Reply with quote

What is your reference? or put another way... where are you touching the black leg of your meter?
zookeepertoo



Joined: 11 Jun 2011
Posts: 3
Location: uk

PostPosted: Sun Jun 12, 2011 12:01 pm    Post subject: Reply with quote

hi, to chassis or rear of panel i guess.
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