I recently noticed that my power drill was not functioning properly. When tilted or when performing heavy load tasks like sanding with a wire wheel the motor would stop and the on/off switch would stop functioning. Moving the drill around would cause the switch to work again.
I took the drill apart to see what may be happening. The brushes looks fine. I noticed that one of the housings for a brush was not attached to the case. It easily popped out of its encasing. I suspected that this was the cause of the problem. For example when the drill was upside down the housing would come out to cause the brush to no longer make contact with the commutator and stop the electrical flow. The diagram below shows where the problem was. This drill is a Craftsman model 315.101230. I simply used Crazy Glue to attach the loose part and put the drill back together. This fix worked and the problem went away.
craftsman 3/8 drill
A note to anyone who may have this problem and wishes to do this repair. This drill seemed hard to take apart and put back together as it required some dexterity. This seems to be a lower end model and does not appear to be designed for servicing. On the other hand the drill seems to be build solidly so with possible brush change in the future it should last for many more years.
Recently, in my work I had a frustrating problem with AOL refusing to accept SMTP connections from our email server. What was happening is that after a connection to AOL email server on port 25 a disconnection would result almost instantly with no meaningful error message displayed. Searching on google or looking at the AOL postmaster site did not reveal any good leads. Finally I double checked our Reverse DNS record again and found that the domain name that it was set to was misspelled. After fixing the domain name, within a few hours, AOL unblocked our server an emails started getting delivered again. I suspect that because the domain name of the Reverse DNS record was not matching the MAIL-FROM address provided during SMTP session, AOL has decided we are some sort of spammer and blocked us.
AOL has some way to go in providing better error reporting interfaces to system administrators of legitimate services who get mislabeled like this so that they can resolve such issues quicker. Also their response to the support request submitted through their Postmaster website is dismal; four day later and still no reply.
I hope that if you have had a similar issues and found this article helpful that you will leave a note letting me know.
The average putty is great but it lacks a few key features, such as the ability to store the login password and automatically reconnect upon disconnection. These missing features can make the average putty annoying for the user. The free MTPuTTy solves this problems quite well and provides for a bit of extra features. Download it here.
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