Re: Samsung PN50C6500 No picture, sound good
Hello all,
I replaced the YSUS and nothing changed. Should I try replacing the XSUS? Thanks
Sorry Tom I didn't see your post and just went on what you said earlier about the YSUS. With both the XSUS and YSUS unplugged the voltages seem to be closer to waht I was expecting. I wrote them down but I can't seem to find them. I will remeasure tomorrow. In the meantime, I did notice a clicking noise that sounds like its coming from the XSUS board (very difficult to tell). Does this signify anything?
dougw03
Member
Last Activity: 10-03-2012, 02:43 PM
Joined: 07-13-2012
Location: rochester ny
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Last edited by dougw03; 10-03-2012, 02:43 PM. -
Re: Samsung PN50C6500 No picture, sound good
Can anyone please offer some advice about which board to switch first? I've been without TV for a long time now. THanks!Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
Va fluctuates between 60 and 66V.Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
Anyone have any ideas?Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
For both the XSUS and YSUS boards...
Vg 20V
Va 60-66V
Vs 216VLeave a comment:
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Re: Samsung PN50C6500 No picture, sound good
Hm, so this sounds like a power supply issue?Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
Hmm I didn't see anything but a couple 100mv of what appeared to be noise on the test points for both the xsus and ysus. The only input that showed anything was the RST which was a square wave. Does this tell you anything?...Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
Ok so I am getting a 10X probe on monday. I've never worked with such high voltages and an oscope, are there safety precautions I need to take before I measure? In the meantime, here are the test points I found
[url]http://www.flickr.com/photos/27836521@N07/7626108936/[/url]
[url]http://www.flickr.com/photos/27836521@N07/7626103082/[/url]
Should I be looking for a particular waveform? ThanksRe: Samsung PN50C6500 No picture, so...e never workedLeave a comment:
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Re: Samsung PN50C6500 No picture, sound good
Ok I'll go for the YSUS. Is there anything I can do with an oscope or DMM that might help me know for sure? Thanks!Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
No I do not.Leave a comment:
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Re: Samsung PN50C6500 No picture, sound good
It is completely dark with no glow. I unplugged both the power and ribbon cables (I couldn't disconnect the buffer without removing the boards) from the XSUS and there was a flash of grey/black when I turned the TV on then the screen went black again. I also could hear the buzzing that I normally hear from the TV. I proceeded to unplug the TV then reattach the XSUS and saw a large spark at the XSUS board power connector. I realize I probably should have waited for the caps to discharge. Is this enough evidence to assume the XSUS is the...Leave a comment:
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Samsung PN50C6500 No picture, sound good
Hello,
I did some research and stumbled upon these forums. I have a Samsung Pn50C6500 and it recently randomly shut off and will turn back on but have no picture. Sound is fine, just no picture. I think it may be the XSUS YSUS or main logic board. As far as inside the panel, all of the caps look okay and the main logic board LED's are still blinking. So how can I determine which board is the problem? I would rather not buy all three boards if possible. I have a multimeter available, but no oscope or any other equipment for diagnostics. Any help would be appreciated. Thanks!
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