I won a local auction for an Apple Lisa!!!

[berskyboy]

I'll work on some measurement instructions to look for further failures on the daughterboard. In the meantime:

Use the image below to diligently check for any remaining solder bridges. If any remain, then Q1 and Q2 may be destroyed again after replacement, and further parts may be damaged too. Shiny solder joints hide subtle details, so after fully checking it once, it can be helpful to rotate the board and check again from a different angle.

If you find any bridges, take a picture/make a note of where they are as that information can help locate and/or eliminate additional components to suspect.

Here's a photo of the board and maybe some solder bridges?  I thought the dot close together would be the same join?

https://www.dropbox.com/scl/fi/hw98nypaj0xsqwhhfgoer/Soldure.Bridges.heic?rlkey=sa3nlcvognw0gys8tra246itb&st=dzc64371&dl=0

[sigma7]

Remove the daughterboard and check it while disconnected from the main board:

With the black lead on pin 5 of the daughterboard's connector, put the red lead on each of the other connector pins and measure with diode test mode, and again with resistance mode.

Black to Pin 5, Red to Pin x

Pin x	DiodeTest	Resistance	Signal
1	inf	6k	+12 sense
2	inf	10k	line sense
3	1.1	>5k	+18V
4	inf	50k	on/off
-	-	-	ground
6	inf	2.6k	+5 sense
7	inf	2.5k	current sense
8	inf	>100k	/shutdown
9	inf	inf	/power fail
10	inf	inf	pull
11	inf	inf	push
12	1.1	>1k	logic +5
13	inf	inf	/delay reset

[sigma7]

Here's a photo of the board and maybe some solder bridges?  I thought the dot close together would be the same join?

The red arrows don't point to solder bridges as far as I can tell.

Referring to the black and white diagram, there should not be any solder that bridges across a white gap from one black section to a different black section. It can be very difficult to see a bridge in a photo, so you should look at the narrow white sections and carefully compare to your board.

[berskyboy]

With the black lead on pin 5 of the daughterboard's connector, put the red lead on each of the other connector pins and measure with diode test mode, and again with resistance mode.

Black to Pin 5, Red to Pin x
Pin x   DiodeTest Resistance  Signal. Measurements
1   inf   6k   +12 sense.     1.628
2   inf   10k   line sense.    1.842
3   1.1   >5k   +18V           0.949
4   inf   50k   on/off.        OL
-   -   -   ground
6   inf   2.6k   +5 sense.      1.196
7   inf   2.5k   current sense. 1.163
8   inf   >100k   /shutdown.     OL
9   inf   inf   /power fail.   OL
10   inf   inf   pull.          OL
11   inf   inf   push.          OL
12   1.1   >1k   logic +5.      0.871
13   inf   inf   /delay reset.  OL

[TorZidan]

sigma7, are you a human?

I am growing more-and-more suspicious that you may be not:
You've been guiding berskyboy relentlessly to fix his power supply.
You've been posting voltage measurements of a working power supply, photos and custom-made schematics. I have't seen such level of dedication in humans...

Kudos if you are!