anyone familar with pn50a550s1fxa power supply? i have two bad diodes heatsink mounted.ds824 and ds825. i have no luck with the schematic or service manual. plenty of hits on reviews. long story but previous owner states dog gnawed thru power cord and after replacing cord it was dead.can post pic but there appears to be no physical damage but the diodes are shorted. they have weird numbers and i cant cross them to anything.
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samsung pn50a550s1fxa power supply
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Re: samsung pn50a550s1fxa power supply
Originally posted by awyatt2 View Postsecondary, 3 legs to220 case bolted to heatsink. one appears marked anode to anode other cathode to cathode. i have seen this type before never seen the markings thoughPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: samsung pn50a550s1fxa power supply
Originally posted by awyatt2 View Postno, cant trace voltage back it is dead until i get the two diodes replaced. numbers are fcu10uc30 and fru10uc30.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: samsung pn50a550s1fxa power supply
Originally posted by awyatt2 View Postno they are on the output of an xformer
Replace "XYZ" with appropriate values.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: samsung pn50a550s1fxa power supply
i just got it running, its a temp job to see if anything else was fried. good news is she is 100%.took two 5amp 1000v switching diodes and made one the other came out of an old computer supply. gonna try and order diodes tomorrow morning. thanks, guess i was looking for an easy way out.
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Re: samsung pn50a550s1fxa power supply
Originally posted by awyatt2 View Postthe caps have a rating of 250v one is common anode and one is common cathode. center lec being common, two anode and two cathode.the connector is labeled=vs,vs,nc,rtn,rtn, vg
Try 300V fast recovery 10A like this.
http://search.digikey.com/us/en/prod...WGI-ND/1147822Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: samsung pn50a550s1fxa power supply
time to update this a bit, finally found a pair of diodes that work, they need to be insulated from the heatsink though. they are available at mouser electronics, so far with these no problems.mur1620ctrg is com dual anode andmur1620ctg common dual cathode. these are 16 amp 200v original was 10 at 200v.so far they are doing the job. I used the silicone type pads instead of mica for insulators.
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Re: samsung pn50a550s1fxa power supply
Do you think mur1620ctg will work as the FCU10UC30 replacement if the rectified voltage is 202v?
I'm currently looking at these SDURF2030CT https://www.digikey.com/scripts/DkSe...17855932124438
A bit higher recovery time but overall good matchLast edited by zape; 09-23-2017, 04:49 PM.
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