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Teardown of the Apple's A1243 Keyboard

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Re: Teardown of the Apple's A1243 Keyboard

#31
post #3

my fav apple keyboard is the from the green PowerMac G4 generation, with the clear plastic casing, and hefty mass. Just don't look at the underside, where food crumbs, hairs that fall into the key holes are forever trapped. https://www.reddit.com/r/VintageApple/comments/ax9hqm/got_an...

That is still my daily driver with my 2019 Mac Pro. Great piece of kit.

Re: Teardown of the Apple's A1243 Keyboard

#32

Earlier quoted context omitted.

Usually when electronic devices have a metal housing, they're tied to ground. Getting shocked could be a sign of a wiring issue in the building. Ground should be at zero electrical potential.

The tingling you may feel is absolutely normal. Most devices (Mac minis and MacBooks while connected to the charger) don‘t even connect to PE (only 2 connectors on the plug). The tingling comes from some leakage across the transformer isolated primary/secondary but is so small that it’s not dangerous. That’s also completely unrelated to static discharges that zap you once you touch something that can equalize the pot…

The post on the AC adapter (that the duckhead or extension cable slots into) is earthed, and some adapters (other than the 2 prong US duckhead) continue this to the building ground.

The US extension cable is earthed, and I believe some duckheads in other countries are as well. The power adapters that were in use for mac desktops during the time period that the person I am replying to was referring to were earthed. https://th.bing.com/th/id/OIP.vmVNrqGAR3raMcey5fAXUQHaE6

Although you are correct in cases where the device is not earthed.

Re: Teardown of the Apple's A1243 Keyboard

#33

That model, but without the numpad, is still my favorite keyboard (the A1242). I've tried mechanical keyboards for fun, but I keep coming back to this one for the low profile. It was only sold for a year or so before the wireless model replaced it, and it's hard to find them now. What I did was to look for used iMacs from 2010, see which ones have the A1242, then ask the seller to only sell me the keyboard. Based on…

People seem to have forgotten eBay exists -- the A1242/3 is still readily available on there.

I cringe a little seeing all this affection for the A1243, after having seen scads of them go into the scrap heap at my local nonprofit electronics recycler.

Re: Teardown of the Apple's A1243 Keyboard

#34

I've been using this model keyboard for probably around 10 years now. I even have a couple spares sitting in a drawer since they don't make them anymore. * they're very durable (talking normal usage + spilling drinks a few times a year — no stuck or broken keys) * the key labels never fade * there's 2 low-power USB ports (I think USB 2.0?) which aren't good for much, but good enough to plug a mouse into * it's not th…

I've been using my desktop with a portable monitor and a lapdesk, due to recent high demand for work-from-home space in my apartment. We shouldn't undervalue those USB ports, it is really nice to have all the non-monitor user interface stuff go through a single wire, if the alternative is to have a bunch of wires tangled around you on the couch.

Re: Teardown of the Apple's A1243 Keyboard

#35

That model, but without the numpad, is still my favorite keyboard (the A1242). I've tried mechanical keyboards for fun, but I keep coming back to this one for the low profile. It was only sold for a year or so before the wireless model replaced it, and it's hard to find them now. What I did was to look for used iMacs from 2010, see which ones have the A1242, then ask the seller to only sell me the keyboard. Based on…

Apple has put out two versions of their tenkeyless keyboard -- one powered by AA batteries (and with a substantial battery hump to hold them), and a low-profile version with an internal battery that charges via Lightning. I had been using one of the latter for at least 5-6 years (before a key died, courtesy of something falling on the keyboard). I've had my current keyboard for about 4 months, and I haven't yet had t…

My gf and I each have a wireless keypadless AA-powereed apple keyboard, one of which takes two batteries and one of which takes three. I only know because I was using one and it ran low, and I discovered I had prepared the wrong number of batteries.

Re: Teardown of the Apple's A1243 Keyboard

#36
post #20

I've been using this model keyboard for probably around 10 years now. I even have a couple spares sitting in a drawer since they don't make them anymore. * they're very durable (talking normal usage + spilling drinks a few times a year — no stuck or broken keys) * the key labels never fade * there's 2 low-power USB ports (I think USB 2.0?) which aren't good for much, but good enough to plug a mouse into * it's not th…

Interesting, a cup of sweet tea killed my A1243. Water got inside and shortened some pads or tracks, since pressing one key instead generated 3 or 4 others. I tried to dry it with rise and silica gel for weeks - didn't help. Then I tried to open it and that was an excellent example of an Apple product which feels great while it works and has 0 repairability, so is an e-waste when broken. Disassembly of any other keyb…

Yep, a splash of coffee is what finally did mine in and they’re totally unserviceable.

Fortunately low-profile keys have been growing in popularity in the mechanical keyboard community so there are some excellent options to choose from now.

Re: Teardown of the Apple's A1243 Keyboard

#37

That model, but without the numpad, is still my favorite keyboard (the A1242). I've tried mechanical keyboards for fun, but I keep coming back to this one for the low profile. It was only sold for a year or so before the wireless model replaced it, and it's hard to find them now. What I did was to look for used iMacs from 2010, see which ones have the A1242, then ask the seller to only sell me the keyboard. Based on…

This isn't widely known, but the Magic2 keyboard can be turned into a wired keyboard by simply plugging in a thunderbolt wire. It will function entirely without bluetooth.

(This also seems to fix Bluetooth connectivity issues. I've got a Mac that likes to forget its connections, and doing this appears to force a "oh, I recognize that device".)

Re: Teardown of the Apple's A1243 Keyboard

#40
post #3

my fav apple keyboard is the from the green PowerMac G4 generation, with the clear plastic casing, and hefty mass. Just don't look at the underside, where food crumbs, hairs that fall into the key holes are forever trapped. https://www.reddit.com/r/VintageApple/comments/ax9hqm/got_an...

Yeah, the M7803 is great. Still have the one from my G4. A couple of years ago, I found a guy on FB market place that was clearing out an office with a bunch of those. Bought two, a black/clear and white. With those as backups, I took my original one apart to give it a good cleaning.
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