My apologies, I thought I attached the schematic. Evidently my efforts didn’t work; I’ll try again. As I mentioned, it’s not very clear, it doesn’t exactly match my PCB, so my faith in it isn’t 100%. However, with the PCB in hand, I was able to verify all the components but the one I’m inquiring about.
I intentionally kept my original post concise. Being a member of various other forums, I’ve found my interest wans when a member gives too much information.
I’m a self-taught novice with electronics. I thought all components that looked like this were voltage regulators. When I couldn’t find it by the labels on it, I figured a senior electronics person would know right away what it is.
Since I had the Servo 140 power feeder apart for cleaning and repair, I wanted to verify the PCB was okay. It’s a good opportunity to learn about a new (to me) component. Assuming it is an SCR, is it possible to verify it’s working correctly without power to the PCB?
Trying to attach the schematic, I’m following the same steps as before. If it doesn’t show up, D Straney may be right. It may have something to do with my new member status.