Thank you very much. I was just about to try harder to pop mine apart with a sharp edge, which would have broken it. My old Sony MDR-CD60 is a little different than yours, but the idea is the same. It has three screws in wells, one of which is pretty deep, so you'll need a jeweler's screwdriver.
The brake cable listed in these instructions is in fact 1.6 mm dia, which is a standard bicycle brake cable, although I’m not sure what kind of bullet it has on the end. So you could also get this at a bike shop.
The brake cable housing is more complicated. Length is 35 inches to the shoulder of the bushing on one end to the shoulder of the bushing on the other end. The outside diameter of the housing is 6.0 mm. Standard bicycle brake cable housings are 4.0 or 5.0 mm in diameter, and their bushings have simple flat ends without shoulders. Thus, it appears that you cannot buy this part at a bike shop. But it looks like they are available from here:
I recommend putting additional cable ties on the brake cables, especially if the walker is frequently plopped in and out of a car. They tend to catch on things and get bent out of shape.
Dear powerbookg4hdd. This is a very long screw and you could not drill it out. First, try to turn it with needle-nose pliers. If that is too difficult, use a larger drill bit and try to drill the head completely off instead. You're in a very difficult situation. Of course, remove the RAM card to give yourself some working space.
Add a "good quality silver-based thermal paste" to the list of tools required. See step 25 and here:
How to Apply Thermal Paste
When you remove the logic board, note that there is an EMI finger surrounding the connectors on the left side. Now here is the important part: When reassembling, remember to reinstall this EMI finger!
They say "peel" because it is stuck with adhesive.
The middle of the three 6 mm screws (orange circles) is hiding under the cable. Actually you need to do step 24 first, so you can access it.
This is not as easy as it looks. You see the four slots in the picturer there -- the two on the end are partially covered by the technician's left and right thumbs. Those are attached to plastic clips that need to be disengaged. You can access the two inside the batter compartment and disengage them using a small flat-head screwdriver, but the two on the left are not accessible. I finally got them to disengage by pulling up near the trackpad.
In the picture, the foil is already gone. If your computer has been taken apart previously, as apparently ours has, the foil may be already gone. The photo is missing the markers that are needed to see what they are talking about, but these two connectors are near the left side. The speaker cable has a red and black wire, and the microphone connector has three grayish white wires.
I would not pull up on the ribbon as is being done in the picture. Note that the black pastic base that you see is the connector part that is permanently attached to the ribbon cable. Use a small screwdriver or spudger alternately on each end of the black plastic base to pry and rock it upwards.
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