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Samsung LED UN50H6350AF - no video   Goto page 1, 2  Next  
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roberted1982



Joined: 13 Dec 2016
Posts: 7

PostPosted: Tue Dec 13, 2016 6:28 pm    Post subject: Samsung LED UN50H6350AF - no video Reply with quote

I have a 50 in LED 1080 p Smart tv. I was watching tv and the picture just went black but the sound stayed.
I read where it was the power board.
Opened the TV up and got the power board out. There was a high temp burned spot so I replaced it.
Same thing.
So then I was told about the T-Con board might be out. So I replaced this board as well with nothing new going on. The back lighting does work. I can hear menu options when I trying to move around with the remote. But I have ZERO picture.
I'm hoping its not the main board after all this.
Any help would be awesome
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JTS1957



Joined: 21 Jan 2009
Posts: 2328
Location: Far, Far Away

PostPosted: Tue Dec 13, 2016 7:16 pm    Post subject: Reply with quote

Do ALL the LEDs light (and stay lit) when plug CNM803 is disconnected?
roberted1982



Joined: 13 Dec 2016
Posts: 7

PostPosted: Tue Dec 13, 2016 7:55 pm    Post subject: Reply with quote

JTS1957 wrote:
Do ALL the LEDs light (and stay lit) when plug CNM803 is disconnected?

Which plug are you referreing to? I'm not 100% sure
JTS1957



Joined: 21 Jan 2009
Posts: 2328
Location: Far, Far Away

PostPosted: Tue Dec 13, 2016 8:50 pm    Post subject: Reply with quote

Lower left
roberted1982



Joined: 13 Dec 2016
Posts: 7

PostPosted: Tue Dec 13, 2016 9:25 pm    Post subject: Reply with quote

JTS1957 wrote:
Lower left


Ok just took the back off plugged in the TV. It's NOT on but plugged in. When I removed the plug you said to remove the back lighting lit up.
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JTS1957



Joined: 21 Jan 2009
Posts: 2328
Location: Far, Far Away

PostPosted: Tue Dec 13, 2016 10:20 pm    Post subject: Reply with quote

roberted1982 wrote:
the picture just went black but the sound stayed.
(backlights are lit during the above)
roberted1982 wrote:
I can hear menu options when I trying to move around with the remote.
(backlights are lit during the above)
roberted1982 wrote:
The back lighting does work.


IF you can't see ANY trace of video (Try using a flashlight angled very close to the screen) and you HAVE audio AND you can't see any trace of menu, since you've already replaced the tcon (this presumes you received a 'good' tcon and that B-Plus IS reaching the tcon board), then this only leaves the Main board and the panel itself.
roberted1982



Joined: 13 Dec 2016
Posts: 7

PostPosted: Tue Dec 13, 2016 10:27 pm    Post subject: Reply with quote

JTS1957 wrote:
roberted1982 wrote:
the picture just went black but the sound stayed.
(backlights are lit during the above)
roberted1982 wrote:
I can hear menu options when I trying to move around with the remote.
(backlights are lit during the above)
roberted1982 wrote:
The back lighting does work.


IF you can't see ANY trace of video (Try using a flashlight angled very close to the screen) and you HAVE audio AND you can't see any trace of menu, since you've already replaced the tcon (this presumes you received a 'good' tcon and that B-Plus IS reaching the tcon board), then this only leaves the Main board and the panel itself.

Ok So if I can see any picture at all with a flash light means my panel is bad?
If I can't see any picture with the flash light means my main board is bad?
JTS1957



Joined: 21 Jan 2009
Posts: 2328
Location: Far, Far Away

PostPosted: Tue Dec 13, 2016 10:40 pm    Post subject: Reply with quote

Which board(s) did you replace? There are more than one (I presumed the ONLY one shown for YOUR power board for example, but tcon & mains have multiple possibilities.)

Power and tcon especially. F200 on tcon should be a good place to measure your B-Plus.

IF you CAN see video with flashlight, especially IF you CAN also see OSD, that would prove the panel and the tcon are GOOD.
roberted1982



Joined: 13 Dec 2016
Posts: 7

PostPosted: Wed Dec 14, 2016 12:19 am    Post subject: Reply with quote

Power and tcon especially. F200 on tcon should be a good place to measure your B-Plus.
Not sure this B-Plus.
IF you CAN see video with flashlight, especially IF you CAN also see OSD, that would prove the panel and the tcon are GOOD.[/quote]
I am using a Streamlite police style light on the tv. I see nothing. But I am also not sure I am on a source that is working on the tv. I have my computer hooked up to it and doing a extend desktop setup now. My desktop is red so you would think I could see it. So as of now I see nothing.
JTS1957



Joined: 21 Jan 2009
Posts: 2328
Location: Far, Far Away

PostPosted: Wed Dec 14, 2016 12:34 am    Post subject: Reply with quote

With a DVM set for DCV, measure for DC Voltage between chassis ground and both sides of F200 OR F200(bottom left).

Last edited by JTS1957 on Wed Dec 14, 2016 12:40 am; edited 1 time in total
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