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leakage current problem because this cause to increase the current, indication of some short capacitor, diode short, etcTest the resistance method by to findo the problem or use the current method to isolate the problem. use the schematic diagramGod bless you
Hello! My name is Ivica,and I am from Croatia.I have same LCD which have problem with motherboard.Try to disconect power supply from inverters and then measure all volt line.Maybe failure is on inverters board!Write me if you solve the problem,and maybe you know where can I find new motherboard for my LCD.Thanks.
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.
I believe that the actual unit may have other problems and that you will need a schematic to aid in your troubleshooting of this issue. Once you have the schematic and a multiment you can check the voltages to see if things ar as they should be and then we can look at what is happening.
schematic & instructions on deck
red (+) - power - 2 amp's power inlet power (+)
black (-) - ground - 2 amp's power inlet ground (-)
deck yellow wire - remote - 2 the remote amp
deck outputs 2 the RCA amp inputs
amp RCA outputs 2 speakers
it is wise that a pro will install the system
it will give u less concerns and u will have warranty on the installation
this will save u the money u will spend for fixing a bad installation