Repairing Samsung LA40R81BD 40in LCD TV Power Supply (clicking Relay Symptom)
Samsung Power Supply (clicking Relay Symptom)
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Inspect all electrolytic capacitors on the power supply board and replace any that are bulging or leaking.
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On my board there were 2ea 2200uf capacitors that were bulging.
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Remove the old capacitors ensuring you don't overheat or damage the copper pads/tracks on the circuit board
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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.
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You may want to check and replace any adjacent capacitors that are rated 10V as these seem to be the ones likely to fail.
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In my case I also replaced the 1000uF capacitor
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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.
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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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