Hi Les.
Thanks for the link. Just read thru that link. Yes, that relay was using a normally closed contact. Just a thermistor circuit controlling the transistor.
This relay is a normally open. SPST.
https://pdf1.alldatasheet.com/datasheet-pdf/view/226322/MACOM/OMIH-SS-112LM.html
The second smaller relay is for defrost mode probably around 5 amps. Can't have the compressor running while defrosting the evaporator.
Had Matt check the contact and it is open, so something must be getting to the relay to bring it in.
Hmmm
Matthew? When you say "coming to life" do you mean the compressor runs and things get cold , the display lights up or both?
Did you get around to the dc voltage measurements?
Much more better pics this time.
Forget about my ramblings about the diode, bent lead looks to be on purpose & normal in that pic.
However the tranny definitely got whacked.
It's time to pull the tranny and inspect the wires coming out from the wrapping and connection to the board pins.
After you pull it take a sharp pic of the underside of him before you do anything to it. A couple angles to get the pins and wires.
A pin may be broken/loose from the base but the wire connection is the important bit.
Does that core move around freely, hopefully it's just pushed aside and there was enough play and hasn't broke the center core that is not visible. Don't try and move it back.
Make sure that the D5, R4 and the c2 cap are good and solder connections are nice and connection foils are not cracked.
If'n the thing is toast, as mentioned you will need to get a 12 volt SMPS wall wort to replace the 12 volts.
Have you found a tech sheet for this guy. A sheet of paper folded up, hidden somewhere behind a kick plate and buried near the compressor or behind the user panel. A lot of times they grow legs and disappear. Among other things, the tech sheet would probably tell you what the LED is for.
We don't get a lot of daewoo stuff over here.