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2016 MacBook Pro 15" A1707 logic board 820-00281-10, how do I test the switching mosfets Q3100, Q3200 etc. I'm suspecting they're the reason battery isn't charging thanks

Late 2014 27" iMac, I have a good i5-4690 cpu and wondering if I can put it in the 820-5029-A logic board (appears to be the 4gb graphics version)?

Discovered part way into diagnosing that the battery is swollen and not holding any charge, so basically all diagnostics have taken place so far with power adapter only. Initially (when the battery was still connected) the MBP allowed me to boot from external disk into Catalina recovery, and...

amp meter shows it's drawing 20.3V and 3+amps, and an iPhone plugged in is getting about 5V and 1 amp. It went into dfu mode for configurator but no luck tried monterey Big Sur and Catalina, tried external monitor, tried safe mode and all the usual T2 commands for smc pram etc, tried target disk...

hello, first of all disclaimer, this is for a Lenovo flex laptop. An 0402 resistor, millimeters from the firmware chip, broke off. The schematic and board file both indicate: "15 0402 5%". I'm assuming the 15 is ohms. Without any indication of power rating I went with 1/16W, but this did not...

.1u_0201_25V6-K so I’m good with .1uf, 0201 but do you think the rest means 25.6V and 10% tolerance?

liquid spill, both usb-c ports were stained with cranberry juice, and replacing both revived the MacBook. Works 100% other than these key problems. I haven't dived into the caps lock led yet. Just the three keys that don't work. I'm focusing right now on U6703 for these three. There's 3.3v...

hi all, thanks in advance for your faithful help, it's much appreciated suggestions for easiest way to solder this part? it has 4 large grounds on the corners. here's my idea: pre-solder all the pads with low melt ~361F, heat underneath with the highest heat possible without damaging anything...

2017, A1707 MBP, non T2, had a FindMy lock on it, and a firmware lock if I tried to boot into recovery I cleared the firmware lock by flashing a clean bios bin, and then immediately did a pram reset and booted from an external drive and installed Catalina. all good except Touch ID doesn't work...

tried aliexpress, ebay, beetstech, mouser, digikey tried searching "audio connector" and 510S0010 and 51138-0274 (from schematic) anyone have other suggestions besides **maybe** removing one from a donor board thank you!

2 part question. first, why would uncoated jumper wire ever really be needed? is there an advantage to using it short distances over the coated version? the other question is, in the process of soldering, is there a risk of burning off the enamel of coated wire too far along the length of it...

2 part question. first, why would uncoated jumper wire ever really be needed? is there an advantage to using it short distances over the coated version? the other question is, in the process of soldering, is there a risk of burning off the enamel of coated wire too far along the length of it...

might you be able to tell me what these numbers mean, so I can replace it? thanks

Is this possible? I have the hakko fx951 but it's not compatible with hakko's tweezers. I've seen portable units under $100 but they're not designed to handle very small smd's. has anyone tried using two soldering irons? thanks for any help!

I have about a 75% success rate finding one on the web. I subscribe to Vinafix, and sometimes I find one for free. Is there a definitive resource that lists/knows if something is available and when to not waste time looking? I'm a monthly subscriber on this forum--is it ok to ask here if I can't...

in your vast library, by chance do you have the boardview file and schematic for iMac logic board 820-01069 that you would share? having a devil of a time finding it. 2017 21.5" iMac, non-retina, known working display and eDP cable, external image works, I don't get LED #4 (i.e. board not...

2009 MacBook Pro back light fuse orientation? hello, I am repairing a MacBook Pro 2009 12 inch back light issue, the previous fuse was removed before I received the MacBook, it does not look like there’s any left or right up or down or pin #1 etc. Can you confirm whether it matters which...

hello, pad/hole for a headphone jack pin on an asus motherboard; this isn't a mac but it's general soldering so i hope you don't mind. does the pad have to be a closed loop or will this suffice?

After much micro-soldering practice, i finally went for it and purchased an iMac at a deep discount that would require replacement of the 60-pin DisplayPort connector, and hopefully flip it for a profit. I tried it twice, and each time the screen wouldn't even power on, and only the first two...