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I have a Vizio e500i-b1 with power problems. I was going to replace the power supply board part# adtvd3613xa6. Can I replace it with part# adtvd3613xa5 instead??
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This model had issues with cold solder connections going from the power to LED driver board, I think you will see the issues once you remove the power supply, the 2 boards plug directly into each other, its the power supply plug that gives issues
You can change boards in your TV all day and it's most likely no going to fix this set. Have you ever had a set of miniature Christmas lights that seemed to work great then all a sudden none would light, either because a bulb burned out or fell out? There are 2 types of electrical circuit wirings, one is series the other parallel. In series like your LED backlights are wired in your TV there are about 8 button lamps per circuit that have a 24 volt DC supply serving each set as this TV has what's called local dimming, one of the lamps has opened up making that set not light up, the power supply has over voltage and over current protection for each supply if one lamp opens up they all go out and this is exactly what's happened in your TV, the power supply safety circuit is non discretional, if it detects an error it shuts down the entire backlight circuit giving you no backlights. As far as a break down on what fails 5% of the times it's the main board 5% its the power board and the other 90% of no backlight failures on this model TV comes from the backlights being bad. You can change just the one bad strip if you wish but it's advised to change them all. Good luck!
You might want to check the VIZIO website for help. Given how cheap even 4K UHD TV's are today, probably not worth fixing again. Unless under warranty, of course.
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Disconnect all the circuit boards from the power supply board and test the voltages again. If the voltages are correct, connect the other boards one at a time to see if one is dropping the voltage on the power supply. If you find one that lowers the power supply voltages to what you read before, that may be the problem board.
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