MacBook Air Disassembled

Now what we've all been waiting for is a full disassembly of the MacBook Air. How take-apart -able is the MacBook Air? Is there a good opportunity for Apple to upgrade the RAM to a full 4 GB? Is it possible to swap-out the HDD with a larger capacity model, or with a non-standard SSD? And how easy is it for a user to replace the battery?

Fixing a SodaStream Jet, part 1: Disassembly Guide

I've had my SodaStream Jet for years, and once in a while something has gone wrong. Disassembly is the first step to repair. Start with this article to see how to disassemble the SodaStream, and then once you have that down, scroll through my other articles to see how I repaired specfic SodaStream problems. SodaStream Jet Disassembly Guide Tools Required Flat head screwdriver Phillips head screwdriver 1. Remove the Carbonator. Duh. 2. Remove the black panel lever The front big black tilt lever needs to be removed first. Removing this panel is tricky, but it isn't impossible. Looking up at the bottom of the black panel, there are two tabs, one on the left and one on the right. These tabs fully secure the panel in place. The trick is to use a flat-head screwdriver under the plastic to gently lever the tabs out of the way. Note in the pictures how I approach these tabs with my screwdriver. I usually release the left side first, and then I release ...

Sodastream Carbonator Leakage, Usage, and Weight

SodaStream 60L "Carbonator" CO2 cylinders have a specific weight when empty, plus about 410 or so grams for the CO2 they should have when they're "full". A little while ago I went to buy a replacement Carbonator from my local hardware store. The dealer pulled a new Carbonator out of the box and sensed it was lighter than usual. He put the "light" Carbonator in the "empty" pile and sold me a different one. At that moment I concluded that it would be smart of me to weigh both new and empty SodaStream carbonators. Here are the results. Weighing a SodaStream Carbonator - for both Science and Consumer Protection. The dealer told me that sometimes the carbonators leak after they leave the SodaStream filling facility. That means there could be an opportunity for customers like me to get ripped off! The SodaStream cylinders I buy claim to have a net product weight of 410 grams - and that means that a full Soda Stream Carbonator shou...

My First MikroTik hAP Adventures

I recently upgraded my current home Internet infrastructure with a Mikrotik Routerboard router. My legacy WiFi equipment had been based exclusively on 802.11n, which still works well but is now two generations old. I decided to upgrade with a " MikroTik RB952 hAP AC Lite " router, in hopes that it becomes my "personal standard" for home networking. The MikroTik home router is small, inexpensive (under $50), and highly configurable. It is reasonably modern, with an 802.11ac radio. It runs MikroTik's RouterOS operating system, which is comprehensive, frequently updated, and provides far more capability than I need. It also seems to be possible to run OpenWRT on this router . I was using Apple Airport routers (easy, capable, reliable, but no longer manufactured) and GL.iNet's OpenWRT based routers (flexible and inexpensive, but mine were the 2.4 GHz only models). They all served me well with no complaints. I figured that now was the time to try somethin...

Fixing a SodaStream Jet, Repair #2 - Broken Fill Button

My Soda Stream Jet's fill button broke, which means I can not longer carbonate water by pressing the pushbutton. This caused all sorts of grief in my household. Here is how I managed to repair my Jet to give it another 10 years of life (hopefully). First, a look at the button The fill button on the top of the SodaStream is actually a simple lever. Pressing down on the button moves a pin that does the actual work of pressing open the Carbonator's valve. Unfortunately, the axis point is fairly thin and can see a lot of stress. That's where my Soda Stream button cracked. [ I think the usage tip here is "don't over-press the button like a gorilla, it doesn't do anything but put high stress on the button."] Cracked levering point of the button The Pesky Lever Retaining Pin The Fix It was pretty easy for me to replace the button: Take off the back of the Soda Stream and remove the carbonator. Push out the the button lever's steel retaining pin. This takes qu...

Repairing a MagSafe Charger's Cord

Here is how to repair the cord of Apple MacSafe power adapters. There are three common failure modes of a magsafe wire: The base of the cord becomes frayed where the wire enters the power brick. This is usually caused by repeatedly wrapping the cord far too tightly around the brick's "ears". The head of the magsafe connector becomes frayed. This is usually caused by repeatedly removing the magsafe magnet by yanking on the cord. Chewed up cord. This is where a pet or other pinching device weakens the cord. These types of failure are usually repairable at home using the technique described here. Tools Required: A beginner's Soldering kit, like this one, including a low-wattage soldering iron, rosin-core Solder, and wire strippers. Heat shrink tubing . Any color works, but these days I use white to repair a MagSafe cord. One Soldering Sleeve, appropriate for 22 or 24 AWG wire Heat gun (optional.) Process: The general process is t...

Hot (and Cold) Attic Tempertures and Electronic Equipment

An unfinished attic can be an extreme environment for electronic equipment, with conditions that are very unlike what is experienced inside normal living spaces. What's the deal with installing electronic equipment in an unfinished and uninsulated attic? I wanted to install a standard WiFi router in my attic to function as a Wireless ISP (WISP) gateway. My attic is a fantastic location from a radio signal perspective, but it is an uncomfortable place for both people and electronic gear. Although the attic is well insulated, that insulation is on the floor, designed to keep the living space of my home at moderate temperatures. As a WISP gateway, my WiFi router is best mounted above the insulation and close to the roof, where the only protection from weather extremes is the wood of the roof and a layer of asphalt shingles. Equipment Specifications and Extremes Almost all electronic equipment has a set of specifications regarding operating environment. These specifications state the...

The Lance J. Technoweb

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