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GE Clock Radio Model 660
What have I done? I've started a third project while the two before it are unfinished of course!
Model 660 'Convertible' Many many years ago, when I was just a wee lad, I bought this pos from a garage sale, as I had many other radios. It still fascinates me. I still haven't seen that many clock tube-radios, and this one has a really cool feature: you can detach the radio and use it as a portable! I dunno, I think that's the coolest thing in the world. Lately, the box that it's been in for the past 10+ years has been relentlessly staring at me, so that's why we're here. This radio has seen some chaos, let me tell you. I think this set has had a lot more than a fall off the table in its life, I think somebody used it for a hockey puck. On multiple occasions. But that's for another post. The radio is a 4 tube battery-powered AM radio, and the clock is the radio's power supply (although it has no method for charging the batteries). At first startup, I did take it up to voltage slowly on a variac. As it was, the radio turned on, and did nothing but buzz loudly. The volume and tuning knobs made no difference. All the tubes test good and the power supply gave 67ish and 3ish volts (same as battery requirements). Given that there's only 3 not-ceramic capacitors in the radio, and another 3 total in the power supply, I just figured I'd go ahead and recap them. I recapped the radio, and there was no difference made. I recapped the PSU, and it did something! Now the radio buzzes very quietly, and the volume knob seems to have an effect - I can adjust the buzz from almost silent to very quiet. And also, playing with the volume makes static once in a while like a dirty volume pot would, so that appears to be working. The tuner still does nothing at all - however, if I touch the radio or PSU chassis, it changes the buzz noticably. If I touch one end of the antenna with a screwdriver (that I'm also touching) it sounds almost like it wants to pick up something, but that's probably because I'm touching it. Now... there is a slight possibility that the tubes are mixed up... I was very young. But I feel like I'd remember that. Like I remember pulling all the tubes out of my Zenith and not knowing where they went. (That'll be an upcoming project btw.) And there's only a stain where the tube map used to be, so fml. Also, while I was recapping the PSU, I think I might have gotten a resistor a little too hot (for an old resistor) but the output voltages still read the same. Ideas? Pics or didn't happen: Radio Bottom Before Radio Bottom After Radio Top PSU Before PSU After Last edited by MadMan; 01-21-2017 at 12:35 AM. |
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