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Old 09-19-2021, 10:56 AM   #1
ikmpch
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Default Samsung Power Supply Board BN44-00150A

Hi,
There is a diode (DS 805) on the secondary side. Can anyone tell me what are the specs for this diode? It is a shotkey diode as the name tells it. Where to purchase it?
Thanks.
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Old 09-19-2021, 11:30 AM   #2
petehall347
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Default Re: Samsung Power Supply Board BN44-00150A

what is written on the diode ?
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Old 09-19-2021, 06:46 PM   #3
R_J
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Default Re: Samsung Power Supply Board BN44-00150A

DS805 is likely ok, it is across the relay coil. This is likely not the problem with the power supply. Post the problem you are having with the power supply.
Post pictures of the board, it is likely bad capacitors in the secondary

Last edited by R_J; 09-19-2021 at 06:55 PM..
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Old 09-19-2021, 06:56 PM   #4
ikmpch
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Default Re: Samsung Power Supply Board BN44-00150A

The diode seemed shorted so I tested the diode out of circuit and it was fine. Later I misplaced the little diode and can't find it so I have to get it's replacement. I guess it's a fast switching diode and operating voltage of 200 should be fine. Any comments?
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Old 09-19-2021, 07:12 PM   #5
petehall347
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Default Re: Samsung Power Supply Board BN44-00150A

1n4148 or similar for the snubber diode .
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Old 09-19-2021, 07:57 PM   #6
R_J
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Default Re: Samsung Power Supply Board BN44-00150A

I suspect the original was a UF4007 based on a similar schematic
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Old 09-20-2021, 06:15 AM   #7
ikmpch
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Default Re: Samsung Power Supply Board BN44-00150A

Thanks Petehall347 and R_J for your help.
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