I have done just exactly that. A dab of silicone glue holds the component in place.
I have an old war story about replacing a $400 mercury relay with a $20 optically buffered solid state relay. We were burning the mercury relays at a rate of one a week during certain operations.
Dead bug board layout works!
It is a GE JEB100B model microwave.
The board is pictured here with the faulty relay just above where it fits in the board.
View attachment 57878
As for this relay, “there’s no power coming out of it” is step one. Also just looking at that board there’s a discolored circle around the bottom right pin. Is that from poor desoldering technique or is that a sign that relay was cooked by over-current?
Step two is removing it and seeing if it closes when appropriate voltage is applied to the coil terminals and there’s continuity between the main terminals. If not, it’s probably bad.
So you’re at step two.
If it closes properly with voltage applied to the coil, Step three is seeing if the control circuit is even attempting to close the relay. If it’s not, the original relay was fine. And something else is wrong.
Your tech only did step one from the description here.
Someone asked what kind of relay it is, it only has four contacts unless there’s contacts on top of it like the one still on the board. I’m in the compose window so I can’t go back and look at the photo now.
The label on the board gives me pause when someone said it was 12 or 24VDC. It’s labeled “Main”. I never like when someone labels a low voltage DC component on a board “Main”. That can mean “mains” as in the main wall plug.
But I don’t see any connectors worthy of AC inputs or any board cuts or large gaps anywhere that an AC/DC isolation board would have on it. So I think probably not. Just crappy silkscreening.
I’m going to rewind here. How did he test it in-circuit? Microwave ovens usually have some safety switches that can cut power to at least the magnetron when the door is open, or sometimes when the case is off, and often cut power to more than that.
Getting too far in here for an Internet thread without more info. Could test the relay in about two minutes here and look around that whole oven and figure out what board does what, etc. But it’s a pain in the arse from afar.
That little ring around the terminal is interesting though...