samsung lE22B450C8W no standby

[Bing]

hi, i have a Samsung 22" lcd tv which has no standby voltage, i done a bit of investigation and found a shorted diode on the standby circuit, my question is should i just replace the faulty diode or is there other components i should also check? with limited knowledge would i be right in saying these diodes would be running at high frequency which could make them very hot as to fail?i think they are rectifying the output from the standby circuit transformer?
Also to source a replacement do i only need the top number printed on it being SB560? i will post some pictures below thanks for reading!

[Bing]

Re: samsung lE22B450C8W no standby

Here are pictures of power supply board.

[Bing]

Re: samsung lE22B450C8W no standby

Please note D105 and D106 I have removed to check D105 being diode which is showing short.

[budm]

Re: samsung lE22B450C8W no standby

This is an always on power supply, there is no standby, the power supply is always running at soon as the AC is applied to the board.
It has 5V and 14V outputs.
D105/106 didoes are connected in parallel to produce the 5V supply, the other 3 diodes are connected in parallel to produce the 14V supply.
SB560 is the number: https://cdn.badcaps-static.com/pdfs/...3cbdc28824.pdf

[Bing]

Re: samsung lE22B450C8W no standby

Thanks for the info, just out of curiosity and if replacing the diodes does not fully resolve issue, if the transformer t101 is powering the 5 volt supply, what is powering the 14 volts supply? please excuse my lack of knowledge as only a novice! Thanks for reading

[budm]

Re: samsung lE22B450C8W no standby

Same power transformer is used for producing the 5V and the 14V, It has two secondary windings to make those two Voltages.
You can run the power supply board by itself without any other boards connected.