My 43 yr old microwave died today.

https://lemmy.ca/post/62316561

I have a NN-7506
I have a national as well roughly the same specs and date of manufacture. I’m really scared it’ll go one day, can’t imagine my kitchen without it.
Pretty inefficient, 1400W in for 700W out… But very reliable
What is the efficiency of yours?
National is Panasonic.