Technology Coordinator for a K-8 school with 30 years of experience as a tool and die maker in the semiconductor, medical and aerospace manufacturing business. I have been repairing and recycling my "stuff" all my life. I have a problem with throwing anything away without tearing it apart and seeing if it can be fixed. Ok, mostly I want to see how it works and why it broke. I am creative in my repairs and often use junk I have around the shop to fix something or make it work better. Friends call me "Marty MacGyver" .
"What is wrong with my MacBook?"に関する回答I agree with Dan, Gan. Well mostly. I would replace the battery for sure especially if you know that it is several years old or more. As far as the charger goes most people would be better off replacing the charger as well. That being said most likely the cord has given in to the constant pulling and bending that is part of being a portable unit with a design flaw that could have been fixed years ago and saved a ton of resources for future generations. By making the cord replaceable by the end user. Another option would be to use a different cord than the single wire shielded cable that is used now. The shielding is what is used for the -return on this cable and where the cable enters the brick is where it fails most of the time. I have repaired a few of these in emergency situations and the actual fix is easy. However, just like Fort Knox, it's the getting in that proves to be the challenge. I have used knives, saws and even an eight pound sledge (Ok, I wore goggles and it was just for fun!) But the...
"How do I find where the oil is gushing from?"に関する回答Sounds like a main oil seal. If you have the engine steam cleaned and then inspect for the leak afterwards you should be able to see the exact spot that the oil is "gushing" from. You have ruled out the two obvious places that oil can "gush" from ( drain plug and filter) and when gaskets like what you find around the oil pan and rocker covers (or valve covers) leak they seldom "gush" and tend to "weep" oil. That leads me to believe that either the front or rear oil seal has failed which would definitely cause a "gush". Although an oil seal is not an expensive part, the repair is quite involved and labor cost would be high.
"How do I prevent my guitar's input jack from loosening?"に関する回答There are different grades of Loc-tite™ Thread locker available. Red high strength, Blue medium etc. Normally you apply a small amount to each part before assembly. Also there is a penetrating grade that you apply after assembly. Be careful not to get any of the product on plastic parts or the finish of your axe as certain plastics will be damaged. I have used teflon tape to prevent dart shafts from coming loose from the barrels and many players use small "O" rings which compress and work much like a lock washer does keeping tension between the shaft and barrel. As a last solution you can try turning your amp down!! ; ) Rok n Roll!