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Samsung plasma pn50B550t2f wont turn on    
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rickmav



Joined: 08 Jul 2014
Posts: 6
Location: Canada,Quebec

PostPosted: Tue Jul 08, 2014 8:16 am    Post subject: Samsung plasma pn50B550t2f wont turn on Reply with quote

Mine just wont turn on,I got no blinking light,sound...just dead, and after watching video on U-tube;it seem that most the time it's a capacitor that blew up or some real cheap part.

so any one here can guide me on what to check or test first?

so far I check the power cord all the way to the power board by doing
a continuity test.
then see pic below;




#1 seem to be the one that break but if I compare it to a new one;
on the 2uf scale the new one read .063 and the one on the board read .069,should I still change it?

#2 is those 3 cap I decide to test,those 3 cap are 450V and 150uf and on the 200uf scale they all read 1 (this was done with cap still on the board),they should read 150uf +- 10% no????

#3 well I was just wondering about this one

or should I check other stuff?

thanks for any help.
Google

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JTS1957



Joined: 21 Jan 2009
Posts: 2323
Location: Far, Far Away

PostPosted: Tue Jul 08, 2014 1:29 pm    Post subject: Reply with quote

Oh, WOW!
IMAX

U-tube has too many videos for me to watch to find the ONE u mean...

I see two fuses. I see pin identifications alongside each connector, yet no mention of measuring ANY of these.
rickmav



Joined: 08 Jul 2014
Posts: 6
Location: Canada,Quebec

PostPosted: Sun Jul 13, 2014 5:49 am    Post subject: Samsung plasma pn50B550t2f wont turn on Reply with quote

yeah sorry for the Imax pic

I check all fuses and the power cord all the way to the power board,it's all good.
JTS1957



Joined: 21 Jan 2009
Posts: 2323
Location: Far, Far Away

PostPosted: Sun Jul 13, 2014 7:40 am    Post subject: Reply with quote

JTS1957 wrote:
I see pin identifications alongside each connector, yet no mention of measuring ANY of these.


I count five connectors (with approximately 30 pins in TOTAL) to that board and you've reported twice about two pins on only one connector. Is there some mental deficiency I should be aware of?

SMPS part number also wouldn't hurt.
rickmav



Joined: 08 Jul 2014
Posts: 6
Location: Canada,Quebec

PostPosted: Mon Jul 14, 2014 9:34 am    Post subject: Reply with quote

I count five connectors (with approximately 30 pins in TOTAL) to that board and you've reported twice about two pins on only one connector. Is there some mental deficiency I should be aware of?

well,I'm a truck driver who can barely walk due to an accident,so yes I got a mental deficiency;I'm mad.

as for TV repair;all I know is I can test thing and try to find out where is the problem so you must speak to me in idiot proof mode.

sorry I should have said this before about myself,

,but no way a 2,500$ TV break after only 4 years when I know it's a part that cost at most 5 to 30$,once I fix this TV;I'll give it away and fix another one.

this world is getting stupid and have;like you say;mental deficiency;
they fill garbage dump with ton's of TV/computer/cell phone for no good reason and just buy new one and this must be stop at all cost.
Google

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JTS1957



Joined: 21 Jan 2009
Posts: 2323
Location: Far, Far Away

PostPosted: Mon Jul 14, 2014 4:00 pm    Post subject: Reply with quote

rickmav wrote:
all I know is I can test thing and try to find out where is the problem


So test for the things (that you can) that are asked for. How about pictures of the connectors/labels & part info (?BN44-00274A?) areas/sticker such that the alpha-numeric information can be read?
rickmav



Joined: 08 Jul 2014
Posts: 6
Location: Canada,Quebec

PostPosted: Thu Jul 17, 2014 5:55 am    Post subject: Reply with quote

50" :BN44-00274A
(LJ 44-00172A)

the other set of # is for the 42" model

and yes all:alpha-numeric information can be read on any board.
JTS1957



Joined: 21 Jan 2009
Posts: 2323
Location: Far, Far Away

PostPosted: Thu Jul 17, 2014 7:51 am    Post subject: Reply with quote

DVM - Set to read DC volts.

Red lead to CN801 pin #3
Black lead to CN801 pin #4
rickmav



Joined: 08 Jul 2014
Posts: 6
Location: Canada,Quebec

PostPosted: Thu Jul 17, 2014 10:16 am    Post subject: Reply with quote

JTS1957 wrote:
DVM - Set to read DC volts.

Red lead to CN801 pin #3
Black lead to CN801 pin #4



I read zero,did this with CN801 unplug but all other plugin and I tried also with all unplug except the 120 ac V plugin.
rickmav



Joined: 08 Jul 2014
Posts: 6
Location: Canada,Quebec

PostPosted: Thu Jul 17, 2014 10:21 am    Post subject: Reply with quote

another clue maybe;

if all is plug and I touch the power button on touch pad of TV,I can ear
a faint "tick" coming from the board at the end of CN801 (where all the outside connection can be plug)
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