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I seriously don't know what the fuss is about with this. Its logic board to logic board transfer. I've used mine like once when i was an AASP. This is tool for them unless you are going to hold a working 2016/2017 Macbook pro at all times. I guess i've been lucky and managed to fix the boards...

Is this fixed ?

From your measurements provided, looks like broken trace from U7000 pin 17/18.

Odd....Is charger recognised in OSX ? Does it charge battery ? Have you run internal diagnostics ?

Good news, i meant L7095......long day.

Lets start with restoring 3.42v rail. Have you checked for any shorts on this line ? Diode mode measurement on L7090 Voltage on R7020 ?

Probably a RAM slot. Could be crap corrosion in there. Have you tried installing RAM in a single slot yet ?

High chance 12.6V made it to the GPU, since Q8930 blew up. However you can isolate PPVIN_S5_HS_GPU_ISNS from PPBUS_G3H at R5410 and run wires everywhere. You'll need a new home for Q8930 as wires need to run to this FET. If you do achieve this you'll need luck the GPU wont need to be replaced...

Whats Q5510 look like ? check traces to u5510.

I replaced GPU, MUX and PCH, only leaves CPU and traces inside board. I checked PCIe lines with a known good board and they are all fine. I might as well re-ball the CPU, what have i got to loose, already about 4-5 hours deep into this.

Unlikely a bad PCH. B I'm suspecting you took CLK measurements with a multimeter ? i'd still suspect U2800 & include checking U6100 + termination resistors. I probably wouldn't have gone down the running hot flux under PCH route on this. Do you have a UC you can run this through ?

Okay, I’m properly stuck on this one. In fact it’s the second board which I've failed to fix with the same symptoms. Both of these boards are the result of being dropped. The issue is I cannot get an image out, either externally or the LCD. (SMC_LID is 3.3V) The board powers up, chimes, can...

Nothing, the device is exactly the same.

whats voltage on smc_lid ?

The B is just the country code.

This will be software issue, rename keychain folder in user library folder, restart mac. New keychain will be created. Passwords will now be remembered until keychain breaks again.

https://www.hakko.com/world_network.html

Send all that shit back. Golden Chipset sell total junk.

Replace L4605.L4600,L4615,L4610.Continuity wont test these at high frequencies.

Remove L7095, Then inject power into the pad that has a short. Start at 1V.