Author Topic: Bn44-00516a samusung power board  (Read 680 times)

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Offline ant17Topic starter

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Bn44-00516a samusung power board
« on: June 03, 2020, 11:54:23 pm »
hi i have ps64e8000gm plasma television.my brother tells me that when  they were watching it just went black. So i said would have a look at it for him. when i opened it up i thought the first thing to look at was the power supply which was bn44-00516a switchmode power supply. i tested it and when i first tried to power it up it blew the 20 amp breaker. which i thought must of been a major short circuit somewhere in the power supply. my first thought was to get out multimeter and check all the main transistors for dead shorts. i found 3 completely shorted transistors and a defective ice3br2565jf offline switch mode ic.  so i replaced them and short was gone but the high voltage side seem to be present. when i checked the low voltage side after the 2 main power / isolation transformers there was no stand by voltage and none of the other low voltages were present on that side. it was completley dead on the low voltage side so again i checked the voltages on the main switchmode ic found that between ground pin and vs pin of the ic should be 25volts but only voltage present was on the drain pin 360vdc and some of the pins seem to have 30ohm short to ground but with out the schematic i am really having trouble visualizing the circuit can any tell me where i might get a schematic for the bn44-00516a even if i have to pay for it if somone could help i would be greatful
 


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