I have a 531 bot , the battery pack blew and took out D19 and R52. I installed a Brav70 in place of D19 A05 and new 47ohm R52 and new aftermarket Roomba battery. I have power across the board but I'm not sure where to start checking to isolate the next blown part that is keeping it from booting up . I used the Brav70 diode as a best guess from other threads. Could also be a possible Bav99 but didn't try that yet. Can anyone help in this problem. I'm trying to fix it as a hobby
dboston