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Samsung LA40R81BD



Repairing Samsung LA40R81BD 40in LCD TV Power Supply (clicking Relay Symptom)



 



 



Samsung Power Supply (clicking Relay Symptom)





  • Inspect all electrolytic capacitors on the power supply board and replace any that are bulging or leaking.







  • On my board there were 2ea 2200uf capacitors that were bulging.







  • Remove the old capacitors ensuring you don't overheat or damage the copper pads/tracks on the circuit board








  • Take care to ensure you install the new capacitors
    correctly. They are polarity sensitive and the board and capacitors
    will be clearly marked which way they should be inserted.








  • You may want to check and replace any adjacent capacitors that are rated 10V as these seem to be the ones likely to fail.







  • In my case I also replaced the 1000uF capacitor








  • If you have a different model TV the layout of the power
    supply board may be different however the faulty capacitors should be
    easily identifiable.








  • If replacing the capacitors does not resolve your
    symptoms you may need to replace the eprom on the main board as it can
    be corrupted or damaged by the power cycling










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