Thursday, December 10, 2020

GE Clock Radio 7-4725 Repair

 GE Clock Radio 7-4725 Repair



I believe the second number in the date code is the year: 1965, 75, 85 or 95? This is a 1970s clock: so it's probably a 1975.



This clock had an hour hand they stopped advancing and a very loose, wobbly rear setting stem.


The cause was plastic embrittlement, which was caused by the transparent plastic posts that held the clock motor and gears snapping. 





There are two posts, below one is almost dead center in the photo. It is broken in half but still (barely) held in place by a standard (flathead) screw.


This left side screw fits in a cutout notch in the metal plate, not through an actual hole in the plate. This means it isn't really held by anything, and should be pulled out so it doesn't fall into the mechanism.



Below is a photo of the right sided one, also broken in half and also held in place by a flathead screw. 


As you can see, this right side screw does go through the metal plate. So it can be left there, where it will act as a spacer for the metal plate.

This means the plate can't fall too forward towards the front of the clock, but we need to keep the plate from leaning backwards.


The photo bow below shows my thumb almost covering the square hole I put a scree into, and then used to anchor the plate to the inside if the face of the clock.




A screw and a hunk of broken plastic I found rattling around inside the clock as a spacer. At the center of the photo you can see what's left of the broken left post.


I set the time (since the gears now meshed properly) and pushed the stem in until it clicked.

A day later and it was still keeping good time.

Parts needed: Phillips and flathead screwdrivers, 1 screw, hunk of plastic for a washer/spacer, xacto knife to start pilot hole for screw.


That's it, a single screw and ten minutes to fix a clock thats almost older than me!