I have audio and no video. The flashlight test shows I have a picture. The power board does check out ok but I only have 67 volts on the led leads. Is my led board bad or led lights or both?
Televison & Video - Vizio - E-Series E470I-A0 47" LED TV 1920x1080, 120 Hz, HDTV
Answers & Comments
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.