It seems like quite a pickle you are in. I think your only solution is to move to a place that has a built in microwave.
They have always been three-way light bulbs - 50-100-150 watts. I mean always like these two lamps have been in this house for probably 30+ years. The 50 part and 150 parts have not worked for the last few years, even after I changed a bulb when it blew out. Only the 100, which is really too hot to read by during the day. (It's been too hot to leave the curtain open because there is a big picture window where the sun comes in. And of course the cold hits the glass in the winter.........)Did you switch to three-way lightbulbs?
third click stayed the same as the second one.I assume you get no light on the first switch click (ie. no electricity flowing through both the ring or dot contact at the bottom of the bulb). You get 100W light on the second switch click (electricity only flowing through the dot contact). Did the light turn off on the third switch click, or did it stay on at the previous 100W medium brightness? The fourth click should have turned the lamp off.
Yeppers!What I find confusing, is why both lamps would start fully working simultaneously.
That is what I suspected. Electricity should have flowed to both the dot and ring contacts at the bottom of the bulb on the third click. In your case, it only flowed to the dot. Hence the lamp behaved the same as the second click. In the 3-way socket diagram from the link I posted, contact #2 either did not touch the bulb’s bottom ring, or one of the switch’s internal contacts temporarily failed.third click stayed the same as the second one.