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.
Gotcha
Shows on page 12 of my schematic, sorry for the confusion
All seems good there. All rails are present, and output of the 1v05 rails measure between 1.045 and 1.052v
Update: found R6114 to be measuring at 100k, rather than 25. Replaced, but issue persists. Checked all others once more...
Laptop suddenly died, no history of liquid or drop. Looks brand new
All SPI Termination resistors and traces test good
Voltages on page 11 being the list of rails / signals under "CPU New Properties"?
I have an 820-00165 board here with no chime
USB flashes for half a second when first plugged in, no activity after that
All CPU power rails measure normal, and CPU gets warm
PLT_Reset_L is 3.3v
PLT_RST_BUF_L is 2.8V
Tried swapping a known good BIOS chip onto board, no change. Original has...
All rails going IN to the connector measure .432 on both boards. I used the same SSD and another working 00165 board
The rails leaving the connector are .550 on the bad board, but .385 on the good board (red probe on ground for both)
Thank you!
SSD_BOOT_R is 0v, but the only resistor on that line (R3701) is "No Stuff". Compared to donor board, it's not there either. I don't have a functional board to compare to unfortunately
SSD_SR_EN_L shows 2.8v. Resistor shows 100k on schematic, but measures 60k. Same on donor board...
Hello, I'm working on an 820-3435 motherboard with no green light
pp3v42 circuit was heavily corroded, some VIAs were destroyed. All corroded components replaced, jumpers ran to repair damaged traces
I occasionally get an orange light (never green), but in the rare instances I get it it...
Firstly, I think it's important to mention I have very limited board repair knowledge. I've done a few basic repairs, but never something as involved as this
I'm working on an 820-00165 board that will not detect an SSD. Used a known good SSD and it doesn't show up in boot menu or DU (Internet...