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3rd tech looking at this machine. LD on U9801, U9850 (GPU MUX related) - replaced LD on U7370 - replaced LD on U1950 - replaced So far nothing has resolve the primary issue where the machine will fire up to 20V, spike 800mA for a moment, then reduce to 600mA constant and run the fans from...

For the purpose of differential testing of a board here; does the A2289 / A2251 trackpad have electrical compatibility to any other models like the A1989 or A2159 ? Regards, Paul.

Hello all, Wanting a clean ME region 820-2915 BIOS that I can use for my own BIOS generation ( doing the usual ssn SN change, and then fixing the checksum using UEFITool ). If that's not available, then SN I need this BIOS for is C2QKR3D1DV33 Regards, Paul L Daniels.

Hello all, definitely calling in a plz-bro on this. I've got an A1286 with an i7 2.66GHz mainboard that I have to replace for a client and I want to migrate the SN, unfortunately none of the clean-ME region BIOS images for the 820-2850 seemed to work for me ( usually 165, 3437 and similar ones...

Require a BIOS fix for an 820-00163 which exhibited no response/activity other than to show blinking folder when all devices (and USB) are removed. Testing with a donor board BIOS restored functionality. Original (corrupted?) and donor BIOS images included in the zip file located at...

Have a Macmini 2014 model (with the beloved T6 security torx), comes up with a 6-digit pin lock with Apple logo. This unit is from an e-waste recycling centre that I normally do a lot of work for, so I'm assuming valid ownership. I've cloned the 64MBit chip that's on the top side of the PCB...

Previously Duke has recommended that I just post the serial number of the machine and he can generate a suitable BIOS Image file; is this still applicable? BIOS image available at http://dxp.me/820-00165-3893-20190605.zip

Resistor here just below the USB-C connector assembly in green circle (currently rotated off one pad so I could try measure it). End cap of the resistor has "vanished", so unable to measure.

Not the first time I've had this symptom on 820-3437 ( testing with 85W genuine MS2 ). To date I think I have 3 boards in the "unsolved" box all exhibiting this. Instead of the fan doing the on/off/on/off... on-and-run sequence, the behaviour instead is to run the fan continuously for the about...

I just noticed something this evening, A SSD ( SanDisk 655-1837c Sd6pq4m-128g-1021 128gb ) works in my A1466 820-00165 and A1502, but doesn't show up as a device on my A1466 820-3437 boards (either of the two working ones I have). Is there an electrical/signalling difference of the SSD...

820-00165 supposedly replaced with a new board a couple of weeks ago. Clear signs board has seen liquid damage and was ultrasonic'd and put back in to service as it probably booted "then". Now the unit will only green/orange light & fan spin. The fan spin runs for about 10 seconds, then stops...

Board had liquid damage previously and has subsequently been repaired, boots macOS and "seems fine", though the one sticking point for me, and one I'd like to get an opinion on, is that the built-in AHT (internet loaded one) never finishes, instead over the course of a few hours the progress bar...

[SOLVED]Milk Damaged 820-00165; did run, but no SSD detected, n̶o̶w̶ ̶d̶o̶e̶s̶ ̶m̶i̶x̶e̶d̶ ̶f̶a̶n̶ ̶s̶p̶i̶n̶ Milk damaged 820-00165, moderately extensive rework required, a lot of corroded out pads/parts replaced and some reconstruction required for L5001 area. Was running after rework, would...

I've modified the existing Windows BK-390A software that is being used on the current live streams to handle the different protocol used by the BK-393 (which seems overall to be a better meter). This hasn't yet been tested with a real meter, but at least it's a starting point (it works with the...

Prior repair. Liquid damage. Arrived with no fan spin. Repairs to corrosion on U7600, replacing R7981, reconnecting trace between U7600 and C7981 (CPUVCCIOS0_EN) restored fan spin. No chime. No LCD_EN. I now have no PPVCORE_S0_CPU_REG or _AXG_REG out of U7400. U7400:1 EN (CPUIMVP_VR_ON) is...

Searching this group hasn't shown any hits for one; hoping someone can provide a bios dump for me to test on a board here that fanspins, cpu gets warm, but no chime/dong or display.

An A1707 in today, more time spent trying to get that bottom panel off than what happened next. Machine booted fine, battery detected, 0% and no lightning/charging going on according to the macOS. Undid the connectors, flipped up the +/- tang, appeared clean, put it back together and now it's...

The machine is a no-fix ( significant areas of copper delamination and PCB burn-through ), so I'd like to see if at least the SSD is functional, however, it's one of those PCB card edge SSD module units. Is there an external USB adaptor or converter available (or normal SATA interface) ?

Having just fixed up a liquid damaged 820-2838, I want to run ASD to check to see if there's any dud sensors I've missed (wouldn't surprise me). I've tried 'D' and 'Option-D' during boot, even ctrl-D, no avail, both with, and without the SSD. Wifi works.

Coffee spill. No migration through to the main board thankfully, but I've noticed there's not a lot of price difference between replacing the keyboard within vs a complete top-deck replacement. My question more is "Is there a preferred supplier?" (sending to Australia)