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john-morris Guest
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Posted: Tue Sep 08, 2009 2:05 pm Post subject: samsung plasma no picture ? |
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just a quick question please.
i have a samsung 50q7hd plasma.
set has no picture panel seems dead?
i have noticed the green led 5800 is lit up on the ysus is that normal ?
anyone help. |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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Posted: Tue Sep 08, 2009 3:10 pm Post subject: |
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You need to start by disconnecting board by board from the power supply to see if you can isolate which board it is. Check your VS and VA voltages with and with out the boards plugged into the power supply. |
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john-morris Guest
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Posted: Tue Sep 08, 2009 3:44 pm Post subject: |
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VS and VA voltages label on panel says va 63 & vs 207
with all boards connected
power supply ysus vs connector measures 207
power supply xsus vs connector measures 207
power supply bottom buffer va connector measures 63
with boards dissconnected
power supply ysus vs connector measures 216
power supply xsus vs connector measures 216
power supply bottom buffer va connector measures 63 |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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Posted: Tue Sep 08, 2009 7:06 pm Post subject: |
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You need to unplug the y sustain and see if the set will turn on, then disconnect the x sustain and try again so on so forth... |
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