HELP - Chip identification - acer chromebook r13 cb5-312t

Guyver

The laptop won't turn on or charge i looked at the motherboard and found this chip was burned out. Located on the underside of the board near the charging port.

Can anyone help me identify it so i can source a replacement?

Thanks in advance.

Justin

Chip.jpg

JackE

The best way to identify the chip is to download the motherboard schematic PDF from either laptop schematics in US or realschematic in UK/EU. Cost about $20usd. However, be forewarned that the chip looks like a thru-hole mount, not surface mount. These aren't easily replaced with ordinary pencil tip tools. Furthermore, a chip failure like this usually heralds other component failures that might only be detectable with diagnostic equipment. So replacing the chip alone probably won't resolve the issue. Mouser or DigiKey are the best bets for purchasing discrete chip components like this if it can be fully identified but seems to be related to component chip GP 9PC.

Since brand new replacement mainboards are less than $100 , I think it might save you time, hassle & money simply replacing the mainboard.. Google search keywords 'cb5-312t' 'motherboard' 'aliexpress' for replacement vendors and options who ship to your location.

Guyver

Thank you for coming back to me. I managed to download the schematics but i'm having trouble identifying it (attached). I have detected a few shorts to ground locally and the revers side of the board looks good but wanted to change this first to see if it resolved it.

You might be right with your suggestion. Very much appreciate your input though, and will look into the options if i don't manage to find the chip.

Many Thanks

Justin

acer_chromebook_r13_cb5-312t_quanta_zse_rev.1a_sch.pdf

StevenGen

https://community.acer.com/en/discussion/comment/1154314#Comment_1154314

Just as an addition to the above, that GP9PC looks like a "P-channel enhancement-mode power MOSFET for load switching?" and specific to Acer and your laptop, unless you have a spare mobo of the same or similar that has this exact chip? Then you can use that same chip, otherwise It should only be diagnosed and removed/replaced by an experienced technician that has these parts and/or can get this same part for your laptop, but and most importantly, he/she has the experience to diagnose fully why this chip shorted/burned out or if it's just a faulty chip? As just removing this chip could fix the problem or do nothing (maybe???) or replacing this chip could do nothing also and your laptop will still have the same problems? As your laptop might have other issues that have caused this chip to burn out. All this can only be done by an experienced technician that does this sort of work and that has the appropriate tools to remove and replace this microscopic chip.

If you haven't got experience of testing the exact specs of this chips voltage/Ohm/Amps ratings and/or the tools to take it out/replace this chip "don't attempt to do this job yourself'” as you will damage this chips mobo circuitry traces which will cause more damage and it will be harder and more expensive to fix.

Btw, if you have the experience of knowing what this chip voltage/Ohm/Amps ratings are, then look at a similar chip here at "ALLDATASHEET.COM" and search their database and see if you can find a replacement GP9PC chip on this site, as they do have allot of chips under "P-channel enhancement-mode power MOSFET" titles that could be a replacement for the Acer GP9PC, so do the research, if you want to really find a none oem chip.

Note: the below chip is part #: AP2603GY, and they are available online, but this may NOT be the chip that you are after? Below is the specs of that chip, but I can't guarantee you that the below chip is the exact GP9PC chip, as you need a multimeter to figure out the GP9PC chips specs (btw use the other GP9PC chip so that you can get the exact chips specs from that) as they are the same. Good luck and hope this helps you out somehow, as I know its not an 100% solution😀

Guyver

Wow! Really do appreciate you taking the time to respond. So the fault was caused when the laptop power cable was tripped over, laptop fell off the couch.

A local repair shop had a look but didn't find the damaged chip 🤔 just said it was a mobo issue they couldn't diagnose.

This was my daughters laptop (now replaced - the laptop not my daughter 😁) so at this point I just want to try to fix it instead of discarding it as it's only had a few months use.

My current plan is to source a used mobo and see if I can swap the components but thought I'd try to source the chip as a start point.

Thanks again for your time

Justin

JackE

You might try sending the image of the chip cluster to DigiKey or Mouser with a note that it seems to be associated with the chromebook's charging port. Years ago a Mouser tech was able to identify a popped chip on a PC-XT cloneboard for me from a Polaroid camera snapshot that I snailmailed to them. Chip cost less than a buck for one. But shipping & handling was a lot more. 🙂

JackE

>>>So the fault was caused when the laptop power cable was tripped over, laptop fell off the couch.>>>

Thanks for revealing the likely cause. Yes, a replacement mainboard is the way to go. Aliexpress often has vendors who offer new boards for not much more than ebay used. And they warehouse many boards stateside so deliveries are much faster than on a slow boat. Fairly reliable concessionaire like Amazon.

Guyver

I'm based on the UK so will see what's available without a crazy lead time. Thanks again for sharing your tips and advice.

Justin

JackE

OK. I'd expect about a month delivery on a slow boat. Good luck. 🙂