Following on from the last featured watch post on the Cosmotron 5800, I thought I’d point out one of the issues I found with this movement and is something you might want to look out for.
I have three watches with this movement – when I got them two were non-runners, whilst one was in good working order. I found out why two wouldn’t run quite quickly, and it concerns the lower battery connection, which is in the form of a plate located on a plastic base beneath the battery. With the battery removed, the plate is indicated here (this one appears to be bonded in place rather then screwed):
On one of my 5800’s this plate was adrift, on the other non-runner it was missing altogether. The plate is easy enough to place correctly, since there are two lugs in the plastic base which hold it in place:
Even without a screw to hold it (looks like a screw hole is there for this purpose), and with no glue, the plate is held ok once the battery is in place and tight under the battery holder:
So if you see one for sale as a non-runner, just maybe the lower connection plate is loose and once back in place it’ll fire up just fine as mine did. However, if it’s missing, you’re stuffed of course!
Great info! What battery are you using?
I need to check so will let you know asap. Stephen