I think this will be an intersting repair. I think it's important to take on new and different models, it helps keep the skills shiny and sharp. I guess I'll have to trug-alone with my meager amount of shop equipment ~ if I only had spent $200,000 on test & measure equipment, my life would be soooooooo much easier ??? - Chris
You showed this model in a previous video, which I mentioned I had when I was a kid. The sub-master you showed was the same, and the larger stations were the same without all the station switches. The small stations were the same as you have there. There was one speakerless remote station, which I believe controlled a wall speaker in the family room. As I mentioned previously, I didn't recall the chime unit, as I would have certainly had a lot of fun with that. The home it was installed in was built in 1969, if that's useful information for you. The system was replaced with an IM-406 which I identified by a couple of videos you did about that model. That, I remember, had the radio fade-in/out feature during intercom use. Hope to see the unit working soon!
Hi ronk9830: Yes, I stil have the RCM4 that was featured in the other Video in my office. I'm sure that this will be a "fun" and "interesting" repair. . . - Chris
What a sexy looking unit… Sean Connery, James Bond comes to mind. Sounds to me, unsaid company sends more money on test equipment than on technicians. A tech probably found the blown fuse, replaced it, and thought, “Done and fixed”. The tech probably didn’t do their due-diligence to discover why the fuse blew. Don’t mean to be overly critical. I’ve been guilty 🤫. OR… maybe that’s not the case at all. Let us know about the potentiometer. My guess, it’s for bias resistance for an amplifier. Just a guess, but interested. Kind regards, Doug
Hi douglas: It's difficult to understand the thinkiong of some "repair shops" when you open up a recently working on piece of equipment and find several epoxy capacitors with cracks and missing pieces in thier cases. . . In my opinion, when working on a 60 year old piece of equipment, things like capacitors just get replaced - testing them is foolish. As I was taught, "fix it once and fix it right" and I'll see you in another 25 years - Chris