My VP504fhdtv10a vizio plasma TV when connect power cord the Vizio in front light up yellow/amber but will not turn on. I have replace Logic Control D Board still have same problem. I do research online and think it may be problem with Main Power Supply board. Does anyone have replacement Main Power Supply board or know Repair Service for the board? Thank You

is there any sound? Did you order the exact main board part # as your original board?

The set is going to have to be taken apart and looked at: a guess would be to start with the main power/power supply board.

This is a classic switchmode power supply, has sensed a severe potential problem, and is shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have parts on hand, also sometimes, there has been a service bulletin in issued and the repair may be subsided or even free. There are many, many, many reasons that display this symptom, one must work through the troubleshooting steps to isolate and identify, the Cause and repair that and any damage done

This could be the psu...but first thing is first.

Please ake sure you do not have a tripped a breaker. Also, make sure there are no other devices connected to the tv to ensure its not preventing any power to your tv.

Check ur power source with other devices?Yes.Than,the power supply board it dead.That the board,where the power a/c cord plug into it.Try website like Ebay.com to buy a refurbish power supply board for the replacement.

I just solved this kind of problem with my VIZIO VP504FHDTV10A. It was main power supply that went bad. You need to open back panel cover and right in the middle you will see two powersupply boards(subpower board(smaller) and big main powersupply board). Just get board part/model # and search it on eBay(what I did). It was approx. $100. Good luck.

Worst case will be the main logic board, but first thing to check will be the power supply module.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Tries unplug,replug about an hour,see if it reset itself.Not than must replaced the signal tuner board.Plasma have this problems alot.

replace the sustainer boards should correct this problem. New sustainer boards may cause red and green pixilation. If this happen, replace control board and TV is as good as new.

For the 46" TV, it sounds like the main board is bad.

For the 50" Vizio: is the LED light on?