Power board and back lights led tv
Tv screen went black but has voice and not even menus. Has 2 led strips and I introduced my own voltage and one strip lights up. The other strip seems to have 3 dead because when I turn tv on while disassembled I see both strips light for a second, twice, and on one strip 3 don't light, the last and the first 2. I checked the voltage coming from the power supply to the led strips. two of the wires are 127v and 2 wires 0.When I unplug the wires from the power board I get the same reading. Should I be getting voltage from each set of pos and neg wires going to the 2 strips? Trying to find out if the power supply board is good?
Televison & Video - Samsung - LE - UN32EH5300FXZA 32 in. HDTV
Answers & Comments
BL Inverter board fault. It's not working [oscillating]. 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.