Samsung Power Supply Board BN44-00150A

ikmpch · 09-19-2021, 10:56 AM

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.

**petehall347** · 09-19-2021, 11:30 AM

what is written on the diode ?

**R_J** · 09-19-2021, 06:46 PM

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

ikmpch · 09-19-2021, 06:56 PM

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?

**petehall347** · 09-19-2021, 07:12 PM

1n4148 or similar for the snubber diode .

**R_J** · 09-19-2021, 07:57 PM

I suspect the original was a UF4007 based on a similar schematic

ikmpch · 09-20-2021, 06:15 AM

Thanks Petehall347 and R_J for your help.

09-19-2021, 10:56 AM	#1
ikmpch New Member Join Date: Jul 2020 City & State: Ottawa My Country: Canada Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 19	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.

09-19-2021, 11:30 AM	#2
petehall347 Badcaps Veteran Join Date: Jan 2015 City & State: worcester My Country: United Kingdom I'm a: Knowledge Seeker Posts: 2,984	Re: Samsung Power Supply Board BN44-00150A what is written on the diode ?

09-19-2021, 06:46 PM	#3
R_J Badcaps Veteran Join Date: Jun 2012 City & State: ☻ My Country: Canada I'm a: Professional Tech Posts: 7,350	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..

09-19-2021, 06:56 PM	#4
ikmpch New Member Join Date: Jul 2020 City & State: Ottawa My Country: Canada Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 19	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?

09-19-2021, 07:12 PM	#5
petehall347 Badcaps Veteran Join Date: Jan 2015 City & State: worcester My Country: United Kingdom I'm a: Knowledge Seeker Posts: 2,984	Re: Samsung Power Supply Board BN44-00150A 1n4148 or similar for the snubber diode .

09-19-2021, 07:57 PM	#6
R_J Badcaps Veteran Join Date: Jun 2012 City & State: ☻ My Country: Canada I'm a: Professional Tech Posts: 7,350	Re: Samsung Power Supply Board BN44-00150A I suspect the original was a UF4007 based on a similar schematic

09-20-2021, 06:15 AM	#7
ikmpch New Member Join Date: Jul 2020 City & State: Ottawa My Country: Canada Line Voltage: 120VAC 60Hz I'm a: Hobbyist Tech Posts: 19	Re: Samsung Power Supply Board BN44-00150A Thanks Petehall347 and R_J for your help.

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