Curious Marc takes care of the repair of sewing machines
Even the most talented engineers can be stuck with simple repair projects. In this case, repairing a broken sewing machine has [CuriousMarc] all tangled up. [Marc] is probably best known as a member of the team that successfully restored and started an apollo guidance computer, but he worked with many other older machines.
This problem has hit much closer to home. [Marc’s] girl wanted to sew a Halloween costume. The machine would start fine, but when trying to sew it would make a little noise, then beep and display “Safety device has been activated”. Not very useful.
The sewing machine in question is called “Baby Lock Decorator’s Choice” and is manufactured by Brother for Juken. [Marc] of course sank in and quickly got stuck with a clamshell housing that just didn’t want to come apart. It is at this point that many of us would apply a little too much force when prying and being rewarded with a broken case.
[CuriuosMarc] luckily is the most patient kind. Rather than becoming [FuriousMarc], he carefully persevered to find a hidden screw holding things together. The screw was only accessible by inserting a screwdriver into a small access hole on the front frame of the machine.
Once the screw was removed, a few molded clips were enough to hold the sides of the case together. After making them burst, [Marc] was finally able to solve the real problem: a toothed belt that had slipped from its cog. That’s it – just a loose belt. The cryptic error code was likely due to the machine realizing the engine was on, but the machine was not moving, which would usually indicate something stuck or tangled in the wire path.
This type of repair would be much easier if service manuals were readily available. We did a quick search for this model but couldn’t find anything available for free.
Are you stuck with a simple repair? Tell us about it in the comments.