Thanks for the info. I guess the DA9090 is not on their web site. I’ll email them directly.No, we don't have a repair facility. The complexity of the PCBs and modern component sizes means that replacing components (esp. the PMIC as it has pads, it's not a BGA) is very very difficult requiring specialist equipment, and even then, takes ages. So it is indeed much much cheaper to replace rather than repair.Doesn’t Raspberry Pi (the company), have a repair facility? If not it’s a shame that a company, whose success has been partly made through the support of the hobbyist community, does not offer such a service?
The standard fix is send the appropriate currency to your favourite local Pi vendor and they send you a brand spanking new PMIC in its protective packaging that looks surprisingly like a new Pi.
https://community.renesas.com/power-pro ... nformation
All levity aside, as far as I know, the PMIC is a custom part, and as such it is not available for general ordering in single unit quantities and is a complex repair job even if you could acquire one, unless you have the appropriate SMT repair station.
Dead PMIC == Dead Pi
On a side note, if the PMIC is toasted, I wonder what would happen if I supplied 3.3v, 5v and Gnd through the GPIO?
I guess it comes down to the choice of either a cheap device that is difficult to repair or a much more expensive device that is not. I can pretty much guarantee which one people would buy.
That said, you can buy the DA9090 from the PiHut. But remember you need specialist equipment, and an experienced person doing the replacement.
I have emailed @MadeDoctor who does some repairs on YouTube and see if he wants to give it a go. From what I have read though (and there’s not a lot of info on the web) if the PMIC gets damaged it usually leads to damage elsewhere.
For my information are there any schematics or diagrams anywhere showing what voltages or amperage readings should be expected from a working board and from where? I noticed on the back of the board there are number of pads labelled T with a number presumably for testing?
Ta
Statistics: Posted by JonnyAlpha — Fri Aug 02, 2024 3:11 pm