Question about Vizio M550SV 55 in. HDTV
Vizio M550SV Problems: 1. No imaging (picture) 2. Has sound 3. You can see backlite is working when you turn tv on or change input selection. Vizio Emblem lights up as well.. Tried so far: 1. Replaced Main board 2. Replaced Power Board At this point Im not sure where to turn. Could I have gotten a bad main board? Could it be the actual screen itself and not the boards? Thanks in advance for any help. Thanks Greg Baldwin
It may be an input cable problem. Check hdmi and or coax cables to make sure they are not damaged . If you have another tv hook cables up to it to make sure they are working. Hope this helps.
Posted on Dec 31, 2013
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Posted on Jan 02, 2017
SOURCE: Orange light is all I get.
99 percent its the mainboard not the powerboard, especially if you have amber led. The mainboard swap is pretty simple if you can get the parts.
Posted on Jul 19, 2009
you need to check first the power supply board whether the output supply 12-24vdc for the inverter board is stable and not flactuating..you can measure the output voltage with a multitester..you get a voltage output of 12-24 with the inverter board is connected or loaded to the system.be carefull of the high voltage at the inverter board..once the output is stable replace the inverter board or you can measure the output of the inverter be very carefull..the output range upto 500vac.be carefull..if the high voltage is stable replace the lamps...tnx and good luck..
Posted on Jun 03, 2010
Testimonial: "Thanks again. :)"
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