The power meter lights were both off, one function bulb (FM) was out, all the rest were ok. I was putting the plastic fixture (with 4 fuse type lights) back into position after checking those bulbs and like an idiot I didn't kill the power. Apparently something touched the flat board adjacent to it and all the lights went dark.I checked all the fuses with an olm meter, all show good. What is a fuse resister? and what does it look like on a schematic?
I took a closer look at the main fuses. I worked for the phone co for 40 years and am used to using a KS meter for checking olms. The radio shack multi meter I have shows gobledygook instead of shorts etc. Anyway, the 1A fuse was in fact blown and when I replaced it, the lights returned. The power meter lights are still out and I'd bet money that the fuse/resistor on 1470 is in fact blown. I'm going to bridge past that part and see if the lights return. If so i can replace that part or jump past it? Having a bit of trouble getting the 18olm fuse/ res.
Hi Pete. I checked the only rest/fuse on 1470 that I could see from the back. It was fine. I've ordered a new set of bulbs that are apparently genuine or close matches. They come with the little rubber grommets that seal off the bulbs. I'll change them when they arrive. I've used a lot of Deoxit on switches and they sure look clean. This machine has a checkered past. I bought a new 8080 along with a couple of new AR 12s, about $1100 worth of gear in 1976? Sometime in 1993 I took it into a repair guy in Rohnert Park to get some bulbs changed. I make the mistake of telling the guy that at that time these machines were valuable to Japanese collectors. He said that he had a couple in the back. Well, when I picked it up, it wasn't my machine. Every thing was pristine on mine, the one the guy gave me was just not right. I pointed this out, but by that time he wasn't budging and my only course was to call the cops and I hadn't marked mine to prove my point. So this one is what I got. It is nice but nowhere near what my original 8080 was. I had babied that piece of gear. I have babied those AR 12s as well. In 1985 I replaced both bass speakers and new foam fronts from AR. The foam went away on the drivers and I refoamed the drivers and mids a few years ago. They still sound good.
What is nice is these grommets will also be suitable for 3mm LEDs. And the rubber ones won't suffer from the heat using LEDs too. But from my experience with "Chinese" rubber, it doesn't last very long no matter what. It's not very "ozone" resistant and cracks within a year sometimes. Silicone by it's very nature is much more resilient.
