Hi guys Im working on a Samsung plasma PN58B540 and I already replace the power supply two times and still don't have Vs or Va,the second one turn the tv on but no picture,the original power supply and the first one I replaced don't turned the tv on also I notice that the green light on the video board flash on the turn on process and go out very fast and the main board never show the infrared signal for the digital sound some one have any idea,i thinking on replace the main board too,dont know if because is broken them no vs or va,thanks.
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