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Old 12-17-2017, 10:32 PM   #1
thuss
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Default samsung tv plasma

Hi

I was wondering if someone has come across this problem before- its in regards to a DYP-50W3 psu out of a 50pn5oa450.

The power supply blew the 10amp fuse plus the rectifier - so I just changed those two components and installed the psu.

Then it blew the theristor (Highlighted in red next to the relays) and the bridge rectifier again.

There seems to be a short in the circuit with the mosfets highlighted in yellow(outside legs) on the circuit even once they are removed. (I tried to trace the print and it maybe designed that way)

One of the large filter caps is faulty as well)

Any advice would be appreciated. ( just realised I am in the wrong section)

Thanks in advance
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File Type: jpg bn44-00205a-dyp-50w-3765-p number 2.jpg (176.7 KB, 19 views)

Last edited by thuss; 12-17-2017 at 10:36 PM..
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Old 12-18-2017, 11:10 AM   #2
R_J
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Default Re: samsung tv plasma

The thermistor usually blows open because RL801s is defective. The fets could indeed be bad, here is the schematic
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File Type: pdf samsung_bn44-00205a.pdf (2.03 MB, 18 views)

Last edited by R_J; 12-18-2017 at 11:20 AM..
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Old 10-11-2018, 01:04 PM   #3
thuss
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Default Re: samsung tv plasma

Thanks still couldnt fix it
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