yyuan Posted September 7, 2017 Share Posted September 7, 2017 Hi, I am a new user of Nexys 4 board. I think accidentally damaged the protection diode, due to using an incorrect 12V adapter, when using wall supply option. I ohmed the fuse and it is ~0 ohm, so I think the fuse is still functional. Would removing the diode fix the problem? If I would like to repair the damage, where can I get some more information on that? Would Digilent be able to repair the damage, for a reasonable fee? Any information will be greatly appreciated. Link to comment Share on other sites More sharing options...
Bianca Posted September 8, 2017 Share Posted September 8, 2017 Hello @yyuan, Is the diode hot? Take care if you touch it cause if it really is you'll get burned. You can try to remove the diode and see if the board if it powers again. You might have a chance of getting it back. Also, I would recommend not just removing the diode, but replacing it. If the board works without diode, SMBJ5.0A is its part number. Good luck, Bianca Link to comment Share on other sites More sharing options...
yyuan Posted September 9, 2017 Author Share Posted September 9, 2017 Hello, @Bianca I removed the diode as you suggested, and the board is powered back up. You are such a life-saver! Thank you (&hug)! Y.Y. Link to comment Share on other sites More sharing options...
Juan Moon Posted February 3, 2020 Share Posted February 3, 2020 Hello, @Bianca If you don't mind, please let me know the part number of the fuse as well. Because I accidentally damaged not only the diode but also the fuse. Thank you. Juan. Link to comment Share on other sites More sharing options...
Bianca Posted February 3, 2020 Share Posted February 3, 2020 Hi @Juan Moon, The part for the diode is SMBJ5.0A and the part for the fuse is 0603SFV350F/32-2. You can also check the schematic as the parts are listed: https://reference.digilentinc.com/_media/reference/programmable-logic/nexys-4-ddr/nexys_a7_sch-public.pdf Regards, Bianca Link to comment Share on other sites More sharing options...
Juan Moon Posted February 5, 2020 Share Posted February 5, 2020 Hi @Bianca Thank you so much! Juan Link to comment Share on other sites More sharing options...
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