Element tv model ELEFW605 dead set. voltages all ok except led voltages to panel are 0 volts. power on voltage is constant 4.5 volts no change when power button is pushed.

Chances are you received a defective replacement board, to determine what board is bad test the power on pin on the power supply to main connector it should be marked PS_ON, when you push the power button it should go from 0 volts to about 3.3volts, if you see this replace the power board , if you don't see voltage there replace the main, a tcon will not cause a set to be dead like yours is

Check the various voltages coming from the power supply board and see if they are all ok, there is a legend on the power supply board to show what voltages are at what pins on the connectors,the 5 volt standby we know is good as long as the set has sound, but check the others

To find out what is going on your going to need to measure the power supply voltages and PSON voltage, start with the 5 volt supply if that is normal then test the PSON voltage it should either be 3 to 5 volt and go to about 1 volt or be close to 1 volt and go to 3 to 5 when you push the power button, if you see that change then test the other voltages. if they are all ok the power board is working ok, Be very careful around the power supply, if your not familiar with testing high DC voltage then take it in and have it repaired as the hot side voltage gets close to 400 volts on some sets.

Most likely it's the LED driver. It could be on the main board or the power supply board. These people can get you the correct parts: TV Parts Universal TV Stands DLP Chips ShopJimmy

Its likely the panel itself or the digitizer is going out if voltage is flowing properly. If voltages are off then as I'm sure you know its the motherboard. Good Luck Friend!

If you hold a flashlight up to the screen do you see any image or video

yes the led backlight for whatever reason is not functioning and that is the root cause of your problem. Unfortunately to find a replacement led backlight is tough as the backlight is normally fixed with the lcd panel and has to match the voltage and all that stuff with motherboard. and if that doesn't match you might short the tv itself. this case is as good as getting a replacement lcd panel.

Fault with its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

this is not a capacitor problem. set is only 18 months old - has something to do with x y sustain boards not allowing smps to power on the high voltages.

Thanks for the quick answer. I purchased the set in 2005 and it lives outside under an overhang on my patio in humid South Florida. Unfortunately, I couldnt count the red flashes before it went completely dead. Think it was 4or 5. This would correspond with a possible fuse failure on the Power supply. I bought the online service manual, I just wish I knew what to do with it!! The fuses both seem to check out ok on a continuity check. any ideas? Thanks, Charlie