Reply To: v.1.7 not working even after JTAG flashing; how to debug?

NewHome Forums OSSC, OSSC Pro and DExx-vd isl OSSC – DIY & Repair Support v.1.7 not working even after JTAG flashing; how to debug? Reply To: v.1.7 not working even after JTAG flashing; how to debug?

#65782
spacesaver
Participant

    Hmm, on my OSSC 1.7, U5 is this regulator and the 3.3V output pin is the middle of the 3.

    https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5011/AMS1117.pdf

    I don’t know how to tell if I have the reference design or a clone. I bought it in 10/2023 for $184 on eBay, so it seemed reputable.

    Anyways, U5 is OK, as far as I can tell.

    I checked VCC on the W25Q16JV flash chip and it is 3.3V. How can that be if you say U6 powers it?

    Regardless, how about I connect the output of U5 to the output of U6 since you said they’re both 3.3V, and see if that fixes it?

    U5 regulator