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by krishna72
Mon Sep 16, 2019 11:59 am
Forum: Troubleshooting
Topic: Troubleshoot PMIC
Replies: 16
Views: 3212

Re: Troubleshoot PMIC

I accidentally made a short 5V rail to 3.3V what resulted in having 3.3V power rail down. I've replaced PMIC with MxL7704 AQB (powering sequence in this option looks reasonable) and installed the system. System got installed alright but low voltage warning comes up when it's booting up and power fl...
by krishna72
Mon Sep 16, 2019 11:50 am
Forum: Troubleshooting
Topic: Troubleshoot PMIC
Replies: 16
Views: 3212

Re: Troubleshoot PMIC

I have got the same problem, shorted 5v to Gnd. Now no voltage on 3v3 pin on pi 3 b+ . My PMIC is blown and before replacing the PMIC, I want to know the configuration of all the register in MxL7704 IC used in a brand new pi 3 b+. I think new PMIC registers should be configured same as in registers...
by krishna72
Sun Apr 07, 2019 9:10 am
Forum: Beginners
Topic: Raspberry Pi B+ fried? (Red LED only)
Replies: 7
Views: 1261

Re: Raspberry Pi B+ fried? (Red LED only)

Is this damage repairable? :?:

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