Posts tagged "batteries"

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Raising the PC-8801MH

Hirofumi Iwasaki’s book on PC-8801FH/MH repair says that the head loading solenoid is so loud that you should be careful using the computer in an apartment at night, lest the neighbours complain. I am not hearing that, or any other noises from the floppy drives. Let’s investigate.

thumbnail for "Ms. PC-9801 if you're NS/T"

Ms. PC-9801 if you're NS/T

I got ahold of a PC-98 laptop. Unfortunately, it has a lot of battery leakage and won’t power on. Come hang out and smell the vinegar with me for a little while.

thumbnail for "Get the Tandy 102 (batteries out)!"

Get the Tandy 102 (batteries out)!

Sometime last summer, I spotted a local classifieds listing where someone was selling a “Tandy laptop.” After some interrogation, I determined that it was probably a Model 102. Another Kyocera sibling to join my NEC PC-8300?

thumbnail for "The PC-8801MH gets its battery removed just in time"

The PC-8801MH gets its battery removed just in time

I’ve had the PC-8801MH for awhile, but haven’t even bothered to get it open. It was only this morning, when I looked over my pickle jar full of removed clock batteries, that I realized I probably hadn’t removed the clock battery from it - and hadn’t done the SR either. No time like the present!

thumbnail for "Mini updates 4 - X68000 battery removal, PC-98 window accelerator, PC-8801MH keyboard arrives"

Mini updates 4 - X68000 battery removal, PC-98 window accelerator, PC-8801MH keyboard arrives

I removed the clock battery from my X68000 ACE, sped up my PC-98’s video, and got a keyboard for my PC-8801MH. Come enjoy this bite-sized collection of what’s going on with my machines.

thumbnail for "Mini-updates 2 - A501 battery, PC-98 Gotek update, SparcStation 1+ debugging"

Mini-updates 2 - A501 battery, PC-98 Gotek update, SparcStation 1+ debugging

I’ve been up to a bunch of little projects while waiting on parts and time for the big jobs, so here is another mini-update on three of those projects.

thumbnail for "PC-8801mkII battery removal"

PC-8801mkII battery removal

I delved into the depths of my trusty Showa-era NEC to remove its leaking (leaked?) battery. Here’s what I found.

thumbnail for "The PC8801mkII gets inspected"

The PC8801mkII gets inspected

While the PC9821 has horsepower and 90s clone styling for days, the real reason I spent all this effort and money was to get personal with the PC8801 platform. This humble little NEC home computer platform launched an indie game development revolution - well, or at least it did after this one was made. In fact, this 8801mkII, having been released immediately before the gaming-friendly 8801mkIISR, is only really useful to someone super weird who wants to learn about its guts on the cheap. I don’t know anyone like that around here, so I might as well do it. You’re welcome, future historians.

thumbnail for "Removing the battery from a Macintosh TV"

Removing the battery from a Macintosh TV

The Mac TV is a machine that I’ve had for awhile. It’s a much better TV than a computer (the board is unusually limited, even for a Performa, and has almost no possible upgrades beyond what the computer already has), so it has been in storage for quite some time.

thumbnail for "Commodore A501 memory expansion battery removal"

Commodore A501 memory expansion battery removal

When I first got my Amiga 500, it wouldn’t boot. Suspecting something was wrong with the A501 512K memory expansion, I pulled the card, at which point it did boot. It didn’t take me long to realize that battery corrosion had killed it.

thumbnail for "The Amiga 2500 lives! (on its original 68K)"

The Amiga 2500 lives! (on its original 68K)

I just got my A2500’s badly corroded CPU socket replaced with the help of my buddy and his employer’s substantial rework gear.

thumbnail for "Neo-Geo MVS battery removal"

Neo-Geo MVS battery removal

I’ve had a Neo-Geo MVS cabinet in my house for about three years now. Ever since I’ve had it, it has complained of lost calendar data and generally acted up. For this entire time, I’ve ignored the fact that I have basically a ticking time bomb of battery acid in my machine.

thumbnail for "Experiments in booting the A2500"

Experiments in booting the A2500

Threw a few more hours at the A2000 today, cleaning up here and there. I popped out the 68000, cleaned up the pins, and checked the socket. The socket wipers are immaculate, not a speck of corrosion or acid on them (I checked with a magnifying glass). The pins for the socket on the underside of the board are still nice and shiny, so I’m willing to say the socket is alright.

thumbnail for "Battery removal from the Amiga 2500"

Battery removal from the Amiga 2500

I’ve had this Amiga 2000 for several years, but it was only recently that I put in the effort to fix it. The big problem with these machines long-term is that the Varta clock batteries explode and corrode all the traces and sockets. Mine has a leaky battery for sure, so I hope I can save it.

thumbnail for "Starting on the Amiga 2500"

Starting on the Amiga 2500

A couple years ago, I traded some car parts to a friend for his dad’s old Amiga A3000 and A2500. I knew that clock batteries were going to be a threat on both of those, so I nobly waited a year to take apart and desolder the battery from the A3000. That was back in 2014.

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