[klondike98]

Started on this Emerson 724 the other day. Only 4 paper caps to stuff and one dual electrolytic. The underside looks pretty much like the original after the recap. Radio is playing now with a bit of static; it seems very sensitive to the fluorescent and LED lighting in the shop. I'll do an alignment and then take a look at the Telechron clock to see if that's all working. There is a very faded note on the back of the set that seems to indicate the alarm and sleep mode might not be working. Taking the clock apart will be a new adventure for me if it needs work. The cabinet needs some cleanup, perhaps refreshing the Emerson lettering a bit as well. A cute little set. More later.....[Image: https://www.dropbox.com/scl/fi/nogc8cuf0...avky&raw=1]

[Image: https://www.dropbox.com/scl/fi/2wfu3dw6l...0fu7&raw=1]

Before recap
[Image: https://www.dropbox.com/scl/fi/46macqx25...iisg&raw=1]

After recap
[Image: https://www.dropbox.com/scl/fi/zx8c8eosz...w84v&raw=1]

[David]

Have a Emerson from the same time period the sch looks to be the same. Like how they give you a drawing of the couplate sure makes life easier. Have fun with the clock, sewing machine oil is your friend. Had to clean the tube sockets and tube pins. David

[klondike98]

Fortunately, I think my couplate is still good so I haven't had to reproduce it. I have some synthetic clock oil which is supposed to be better than sewing machine oil although for this clock I imagine its not as critical as with watches or precision clocks.

[radiorich]

Hello Bob,
nice looking little set and far as those telechron clock motors I have done more of those then I can count.

Sincerely Richard

[klondike98]

Hey Rich thanks. I checked the clock today and while the rotor is moving the clock hands they are very slow so I will have to do the "refresh the rotor" procedure that I've been reading about. Two approaches that I've seen. 1) heat the rotor and have the oils seep out the gear opening and then put new oil in by slowly dripping it into the gear shaft opening or 2) drill a small hole in the case, suck out the old oil, rinse with solvent, and then add new oil. Seal up the hole with epoxy. Any suggestions welcome.

[David]

Please drill the hole I could not do the heat thing. David

[klondike98]

The telechron H3 rotor has been relubricated and reinstalled and seems to be working fine. I did wind up using the drill method similar to that seen in this (and many other) YouTube video. I also rinsed out the rotor with some lacquer thinner (seen in one of the other videos) which seemed to do a better job than the liquid wrench. After a day of draining I used the Liberty clock oil rather than 3 in 1 oil and sealed all up as seen in the video. Complete disassembly of the gear train would require drilling out some of the posts that hold the two main plates together so I cleaned as much of the old oil and grease out of the gear pivots as I could and put a small amount of the clock oil on each pivot. It turns out the alarm bell and auto-on for the radio both work OK. They were misaligned however, i.e. the alarm and radio would come on but at the incorrect time. This is corrected simply by repositioning the hour and minute hands to the correct position. Still need to clean up the cabinet and do an alignment check although it sounded pretty good this afternoon when I was checking things out after putting the clock back together.

A few photos of the clock disassembly

[Image: https://www.dropbox.com/scl/fi/gmknjhfg7...qbzx&raw=1]
[Image: https://www.dropbox.com/scl/fi/7uf49fz8t...3vo4&raw=1]
[Image: https://www.dropbox.com/scl/fi/lr3kqsstd...kuwt&raw=1]

[David]

Glad you got the clock running. David

[klondike98]

All put back together and cleaned up. All said, it wan't really a very challenging restoration. A little refreshing of the EMERSON lettering, repro knobs on the clock alarm and on-off switch, some general cleaning and a light wax polish on the plastic. The chassis was aligned pretty well when I checked it. A new pilot lamp was installed, the 50C5 tube was replaced and the caps were stuffed. All the resistors were within spec. Easy peasy...

[Image: https://www.dropbox.com/scl/fi/rgloscvak...a2k2&raw=1]

[Paul Philco322]

It is a Cutie. Nice job.

Paul

[klondike98]

Well…after letting it run overnight I find the clock is a half hour slow over about 12 hours. Must mean the gear train has too much friction or the rotor needs more work. Back to the bench!

[GarySP]

Running it after the cleaning may have broken more gunk away. Maybe clean it again, and try full synthetic 0W20 automotive oil. Just playing a hunch with the oil. I don't know if it's ever been tried. Take care and BE HEALTHY! Gary

[Eliot Ness]

Nice looking little clock radio Bob. Keep us posted if you solve the time issue.