I have had 3 M330 silent mouse with failing left switches. However, I was able to recover them by disassembly, cleaning with alcohol and adding a tiny bit of oil /wd40. This video demonstrates. It fixed 2 of the mice and improved the 3rd.

https://www.youtube.com/watch?v=-w-W6MAn...

I saw a video on youtube where thermal paste was placed on both the silicon chiplets of the cpu. In this picture; it looks like only the left cpu is getting thermal paste which i believe is an error.

I had a machine that was thermal throttling / overheating so I added thermal paste to both silicon chiplets.

Please comment if someone else has any further ideas.

Also, do not forget to clean off the old paste from the heat pipe/heat sink surface as well.

So helpful. I couldn’t figure out where that little L metal piece had fallen off. Many thanks

Heat is essential. I used a 3d printer’s heated set at 65 degrees. Chris Storer’s stip above saved me as you really need to let it sit for quite a while to soften the adhesive. Since I was doing a battery change, I heated both sides as the aluminum back is a huge heatsink that really sucks up the heat. Don’t try forcing it; if the suction cup isn’t pulling a gap in the screen, leave it on the heater for additional time.

Who the !&&* designs a hard drive location that requires complete disassembly of the motherboard and the laptop to replace. Horrible, horrible design.

This is important. I’ve serviced a lot of iphones/ipads for my family as a hobby in the past.

The adhesive was so tight, I cracked the screen trying to pull it/pry it off.

I highly suggest heating at least the bottom edge enough to soften the adhesive

SUMMARY: Clean the earpiece grill with alcohol/q-tip AND A needle tip before replacing quiet earpiece

So. I bought a used iphone 6. Installed a plastic screen protector (expensive self healing kind) and then gave it to my mom. She complained that the earpiece was very quiet... and indeed it was. I immediately thought I had damaged the iphone earpiece when I used water to install the screen protector so I order a new one online.

Install the new earpiece speaker. Still soft... Look up online... common problem, they suggest cleaning with alcohol/q.tip. I do this several times, disassemble and reposition speaker, reassemble... STILL SOFT.

At this point I'm about to throw in the towel... However, Last ditch effort, I disassemble the earpiece and using the tip of a steel needle/pin, i gently scratch the speaker grill from the inside to scrape out any particles.

IT WORKS. you need the needle because alcohol alone may not dissolve the crud that is blocking the earpiece grill. Just a suggestion.