Hello,

A 2020 13.3" Intel MBP (A2251 model; MWP62LL/A)'s top left USB-C/Thunderbolt 3 port stopped working for power charging and connecting with original Apple USB-C power and third party power adapters (e.g., Anker). I even tried to connecting Apple's USB-C
Digital AV Multiport Adapter and iPhones, but macOS Ventura v13.6.7's top right notification says "USB Accessories Disabled -- Unplug the accessory using too much power to re-enable USB devices." even with direct iPhone connected with USB-C and lighting
cables! Also, no HDMI video too. I also tried two USB-C hardwares (a flash stick and a mouse) on this "broken" USB-C/TB3 port. Both also failed to connect and macOS Ventura v13.6.7 says "USB Accessories Disabled -- Unplug the accessory using too much
power to re-enable USB devices."

The other three ports worked fine so I suspect this port is busted since I used it a lot. I looked inside and things looked OK (not dirty and dusty), but it was tiny and hard to see inside. Does anyone know what else to try? I wonder if it got fried
inside. I sniffed that port and didn't smell anything unusual. My client said that port stopped working during his out of country week hot and humid trip.

Thank you for reading and hopefully answering soon. :)
--
"What a wretched man I am! Who will rescue me from this body of death? Thanks be to God ??? through Jesus Christ our Lord!" --Romans 7:24-25. So many issues!
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On 24 Jul 2024 at 16:28:24 BST, "Ant" <Ant> wrote:

Hello,

A 2020 13.3" Intel MBP (A2251 model; MWP62LL/A)'s top left USB-C/Thunderbolt 3 port stopped working for power charging and connecting with original Apple USB-C power and third party power adapters (e.g., Anker). I even tried to connecting Apple's USB-C

Digital AV Multiport Adapter and iPhones, but macOS Ventura v13.6.7's top right notification says "USB Accessories Disabled -- Unplug the accessory using too much power to re-enable USB devices." even with direct iPhone connected with USB-C and lighting
cables! Also, no HDMI video too. I also tried two USB-C hardwares (a flash stick and a mouse) on this "broken" USB-C/TB3 port. Both also failed to connect and macOS Ventura v13.6.7 says "USB Accessories Disabled -- Unplug the accessory using too much
power to re-enable USB devices."

The other three ports worked fine so I suspect this port is busted since I used it a lot. I looked inside and things looked OK (not dirty and dusty), but it was tiny and hard to see inside. Does anyone know what else to try? I wonder if it got fried

inside. I sniffed that port and didn't smell anything unusual. My client said that port stopped working during his out of country week hot and humid trip.

Thank you for reading and hopefully answering soon. :)

Complaining of 'accessory using too much power' makes it sound like
there's a short circuit in the socket ie some contacts got bent and are touching. Disablement will happen in this case, which is rather better
than the alternatives.

ifixit doesn't have a guide, but looking at the headphone jack
replacement guide I *think* it looks like the USB-C ports are on a
little sub board, in which case you can probably just get a fresh one
and replace it. https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Four+Thunderbolt+Ports+2020+Headphone+Jack+Replacement/143620

There's a guide for the Air which appears to show the same sub-boards: https://www.ifixit.com/Guide/MacBook+Air+13-Inch+Late+2020+USB-C+Board+Replacement/142552

Looks pretty simple.

Cheers - Jaimie
--
"What we have done with PCs so far is not natural"
- Craig Mundie, CTO Microsoft

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Jaimie Vandenbergh <jaimie@usually.sessile.org> wrote:

ifixit doesn't have a guide, but looking at the headphone jack
replacement guide I *think* it looks like the USB-C ports are on a
little sub board, in which case you can probably just get a fresh one
and replace it. https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Four+Thunderbolt+Ports+2020+Headphone+Jack+Replacement/143620

There's a guide for the Air which appears to show the same sub-boards: https://www.ifixit.com/Guide/MacBook+Air+13-Inch+Late+2020+USB-C+Board+Replacement/142552

Looks pretty simple.

If you search ebay for 'a2251 board usb' there's a variety of boards for
sale - some of them claim to be third party new rather than recycled Apple ones, but it looks to be just connectors on a flex PCB so I wouldn't be concerned using a third party board. I'm not sure if you need to buy a left
or a right handed one or if they're the same - some of the listings sell a pair, others sell singles without saying which so maybe they are identical.

eg:
https://www.ebay.co.uk/itm/285676210000
https://www.ebay.co.uk/itm/225579588896

Theo

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Mark <captain.black@gmail.com> wrote:

Jaimie Vandenbergh <jaimie@usually.sessile.org> wrote:

On 24 Jul 2024 at 16:28:24 BST, "Ant" <Ant> wrote:

Hello,

A 2020 13.3" Intel MBP (A2251 model; MWP62LL/A)'s top left
USB-C/Thunderbolt 3 port stopped working for power charging and
connecting with original Apple USB-C power and third party power
adapters (e.g., Anker). I even tried to connecting Apple's USB-C Digital >> AV Multiport Adapter and iPhones, but macOS Ventura v13.6.7's top right
notification says "USB Accessories Disabled -- Unplug the accessory
using too much power to re-enable USB devices." even with direct iPhone
connected with USB-C and lighting cables! Also, no HDMI video too. I
also tried two USB-C hardwares (a flash stick and a mouse) on this
"broken" USB-C/TB3 port. Both also failed to connect and macOS Ventura
v13.6.7 says "USB Accessories Disabled -- Unplug the accessory using too >> much power to re-enable USB devices."

The other three ports worked fine so I suspect this port is busted since >> I used it a lot. I looked inside and things looked OK (not dirty and
dusty), but it was tiny and hard to see inside. Does anyone know what
else to try? I wonder if it got fried inside. I sniffed that port and
didn't smell anything unusual. My client said that port stopped working
during his out of country week hot and humid trip.

Thank you for reading and hopefully answering soon. :)

Complaining of 'accessory using too much power' makes it sound like
there's a short circuit in the socket ie some contacts got bent and are touching. Disablement will happen in this case, which is rather better
than the alternatives.

ifixit doesn't have a guide, but looking at the headphone jack
replacement guide I *think* it looks like the USB-C ports are on a
little sub board, in which case you can probably just get a fresh one
and replace it. https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Four+Thunderbolt+Ports+2020+Headphone+Jack+Replacement/143620

There's a guide for the Air which appears to show the same sub-boards: https://www.ifixit.com/Guide/MacBook+Air+13-Inch+Late+2020+USB-C+Board+Replacement/142552

Looks pretty simple.

Cheers - Jaimie

I get this ("USB Accessories Disabled -- Unplug the accessory using too
much power to re-enable USB devices.") a lot on my 2017 MBA. Sometimes
every couple of minutes, sometimes it???ll go away for days or even weeks. At some point I???ll get round to replacing the I/O board (Power/USB/headphone).

When you get that message, what devices were those? Mouse and USB
sticks? Also, were you even able to charge your MBP with that port with
Apple's included USB-C power adapter charger?

--
"Moses thought that his own people would realize that God was using him to rescue them, but they did not." --Acts 7:25. 2 hot. SDCC, Olympics, & DP&W!
Note: A fixed width font (Courier, Monospace, etc.) is required to see this signature correctly.
/\___/\ Ant(Dude) @ http://aqfl.net & http://antfarm.home.dhs.org.
/ /\ /\ \ Please nuke ANT if replying by e-mail.
| |o o| |
\ _ /
( )

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