For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
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
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...
ok, hopefully I'm doing this right. I do not know of a way to have the battery plugged in, so I have the multimeter probes where they need to be and then I plug the board into power (96W genuine apple) and monitor voltage. at that point, the voltage reads zero for about 10 seconds and then .975...
all of these remain at the levels listed for at least a minute. my original post comments about configurator were my DFU mode attempts. is there a different CPU temperature I should be looking at? There are many CPU core points on this board but not sure which if any should have certain voltage...
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...