I am looking for some advice following a dead Rpi 3 A+ i have. Its only been used a handful of times for GPIO stuff and the other day it failed to boot. I’m getting a red led, but the green led which shows the sd card is being read does not light up. After re-flashing and changing out the sd card I discovered the issue was the 3V3 Pin which no longer outputs 3.3v, instead its down to a few milli volts. On other forums I’ve read all comments say that its dead, and to buy a new one, but that’s a bit defeatist and I want to attempt to fix it as I have nothing to lose.
My question to anyone that may know, is the issue likely to be due to a bad diode near the power input socket.