Set informaiton: Model: UN32EH4003FXZA Ver TD05 SN 25QQ3CNDB819932L Power Supply # CN07BN4400664ADC07DADF306 Panel # CY-DF320AGLVIH Printed on the board is a pin out configuration for the LED cable, also reference voltage should be 65V In testing the LED power connection I have the following: With the LED cable connected and measuring pin to pin, I have One set (A) of contacts with 169 volts and the other set (B) with -0- volts. Then with the LED cable disconnected and my meter grounded to the case, the positive for contact set A has 169 volts and the contact of set B has zero volts. Thought - if considering the test for A or B separately then the test with set A indicates LED problems, but the test for set B indicates power supply problems How can I further test the LEDs to see if they are bad or do I just replace the power supply and hope for the best...or junk the tv as it appears the LED strips are in short supply (which also tends to indicate a problem part - IMOP). I welcome your thoughts.
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.
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