Unlike many here who have their own shop, I'm a contract worker jumping around larger corporate customers configuration & fixing their equipment.
Presently I service three large customers winding down from eight.
My largest is in the process of converting from Mac to HP laptop systems as they require USB-A ports in their systems for security key dongle's and other devices which prohibit the use of USB-A to USB-C conversion dongle's.
I will be starting up a mail-in service for MacBook's & MacBook Pro's beginning in 2018.
contact Info: dh_jaffe AT earthlink.net
Let’s say you break the TouchID button then you will need to go to Apple and get a new logic board which has a mated TouchID button.
Sorry its just not possible! The logic Apple is using is all custom and doesn’t offer any means to plug anything else in. Your only option is replacing the logic board.
Tim - It is complete, this is not a repair manual to fix something. It’s a view inside and what makes this iMac tick!
@babak400 - Very well done and useful!
Yes! It’s for Electro Motive Interference (EMI)
If your car came with air bags you wouldn’t take them out would you? EMI shielding is basically the same thing! Having a purpose to protect you (or in this case other internal parts). I would strongly recommend putting the shielding back.
The shield is a Faraday cage to limit either emissions in or out!
Designing EMI protection is a complex process. You need to first make sure you are containing it which the outer aluminums case and the shield on the back of the LCD offers so it is not interfering with other devices you have on your desk or room. Then within your own device you need to protect some areas from emissions from other parts within. This then gets into the glass is half full or half empty problem! Protecting the more sensitive parts or controlling the more emissive parts.
The last issue here is when Apple did its testing it likely noted the higher frequency parts needed more protection. As Apple uses the same logic board across all of the CPU/RAM configs it likely made sense to put the shield in all of the configs to make sure the assembly line was consistent.
As we don’t know what Apples EMI testing encountered it makes sense to put the shield back on if you needed to alter the RAM config. You also will need to make sure you match the specs what your system is using for RAM.
You’ll want to format and install the macOS onto it and then use Migration assistant to copy over your user account and app’s. Leave your data where it is. That way you have the fastest drive setup as your bootable drive and holding your apps. leave the rest of the drive empty so your system has space for virtual RAM, caching & paging. If your apps uses a scratch space you’ll want that here as well.
Hopefully you have 1/4 or better 1/3 of the drive free. This will make your system a real speed demon!
The power button (TouchID) button needs to stay with the logic board it was mated to. Make sure you don’t mix them up!
They can be replaced! It’s just a lot of work.
Apple over did the design thinking no one would need to replace these parts. It has in fact hurt them as well with the keyboard failures. So instead of having a product thats designed to be serviceable from the get go, Apple needs to waste lots of man hours to carefully disassemble the case to replace these parts. Or, they need to eat the part putting a new full assembly in its place $$
Hopefully the next major design goes back to a more serviceable design not only these parts but also the display! Apple has a ribbon cable failure issue and there is a new one which is the T-CON boards are failing due to heat as they are not mounted in the coolest part of the system.
Texas Instruments CD3215C00 is a power controller. It is mis marked here and the link to the 15” MacBook Pro with TB.
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