dead Samsung 40 inch led tv repairing model no UA40B600VV

STEP BY STEP PROCEDURE

  1. SAMSUNG 40 inch led tv have no power indicator glow first i have check power supply
  2. Remove motherboard connection from power supply
  3. See back light is glow or not .if back light is glow means power supply and back light drive circuit is ok .if back light is not glow means fault in power supply then work on power supply
  4. In my case power supply is ok and fault in motherboard
  5. First check 5v stb and then aftar 3.3v
  6. In my 5v stb is ok but 3.3v is not comming then i use module that input is 5v and output is 3.3v
  7. After given 3.3v my tv is work fine

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