INTL 3:770/1 3:770/3
REPLYADDR me@sc1f1dan.com
REPLYTO 3:770/3.0 UUCP
MSGID: <87wmg32l63.fsf@rpi3> 9e26df4b
REPLY: <14s*RDN1z@news.chiark.greenend.org.uk> 4ce7145d
PID: SoupGate-Win32 v1.05
Theo  writes:

> Theo  wrote:
>> The Natural Philosopher  wrote:
>> > On 11/12/2024 16:46, Daniel wrote:
>> > > Andy Burns  writes:
>> > >
>> > >> Daniel wrote:
>> > >>
>> > >>> Jeff did a teardown on his second channel and soldered a m.2 socket
>> > >>> hoping it was properly designed. He found the power lines weren't
traced
>> > >>> in so no power.
>> > >>
>> > >> There were some nearby component missing too, maybe the Rev1 board has
>> > >> bugs, and they need a Rev2 (or whatever) but his soldering job looked
>> > >> relatively clumsy (bridged pins etc).
>> > >
>> > > Yeah, it was pretty bad, at least he was honest about it.
>> > >
>> > > I am sure things were missing to keep the circuitry disabled and I'm no
>> > > engineer.
>> >
>> > Why would you put support chips on if you were not going to install an
>> > M.2 socket anyway?
>> >
>> > I think he called it right in that this is a bare bones model, and more
>> > upmarket versions will emerge in due course.
>>
>> Looking at:
>> https://www.jeffgeerling.com/sites/default/files/images/pi-50
-m2-socket-install.jpg
>> https://www.jeffgeerling.com/sites/default/files/images/pi-50
-pcb-bottom.jpeg
>>
>> I think there's a MOSFET and some decoupling capacitors missing (to the left
>> of the middle larger hole), so the power isn't connected.  There may be a
>> pair of missing capacitors in series with the PCIe lane, but I can't
>> immediately see the footprints for those.
>
> Ah, I see them now.  To the right of the spot on the silver chip are four
> tiny spots for passives, oriented at compass bearing 135 degrees.  I can't
> tell from the photo or video whether they're populated or not, but those
> will be the series capacitors.
>
> Theo

I'm going to wait for someone to hack a working solution then copy
it.

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