Owner put too heavy an item in the oven and the rotary drive made horrible
loud regular clatter noise after that, but cooker works still. On receiving
it was still making loud click noise of about 2 per second, very loud
disturbing noise. By the time I'd taken it all apart and testing the
synchronous motor and 4 rev / min gear train, on mains , all apparently
working order.

Took motor apart
As 2/sec, presumably second to last gear clicking against previously stuck
last 30 tooth gear. The small locating pip on the end of the final gear pin
looks as though it had bent and now returned of its own accord, reinforced
plastic. No wear on any of the gear teeth on any of the gears. How to avoid
it happening again. PTFE washer under the part that protrudes into the oven
?


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

After the pallaver of getting the casing off the oven , Torx security screws
etc. I now realise the well on the base deliberately has 8 weak points, you
can cut and turn around the punch out, and refix with a screw as a removable
access panel.

Decided on PTFE washer and tightening up output spindle bearing surface as
probably worn down. Kill or cure.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/