Vasant Joseph

Hi @JColvin I have sent you the details via direct message to do the RMA process. Could you please check it out?

Arty A7 100 T (xc7a100tcsg324-1) FPGA board was working fine until it suddenly stopped working and stopped being detected by PC. The power and program lights are still blinking but the board is not being detected by Vivado Hardware Manager. Tried changing laptops, micro USB cables, and even tried with Digilent Adept software. Still the issue persists. So now, was trying to look into the voltage parameters of the board- VCCINT, VCCAUX, VCCO etc. Found a schematic for A7 e2 version in which IC1G and IC1H are shown. Link to schematic: https://digilent.com/reference/_media/programmable-logic/arty-a7/arty-a7-e2-sch.pdf But couldn't find these in the actual board for finding VCCAUX and VCCCO pins from them. Could you explain where to find them or provide some insights about how to check the same? Reference manual link: https://digilent.com/reference/programmable-logic/arty-a7/reference-manual. Edit: We probed the following pins and got the following values: Voltage Readings: Vccint = 1.10 V Vccaux = 0 V Vcco_0 = 3.3 V Vcco_14 = 3.3 V init_b = 3.3 V prog_b = 3.3 V Capacitors across the Vccaux in continuity mode(power OFF) of Multimeter was giving beep sound. Could this be an issue as we are also getting 0 V for Vccaux instead of 1.8 V.