**The Macintosh SE/30: Rebuilding after Battery Failure | Retro Computing Restoration**
Welcome to the second part of our restoration series on the Macintosh SE/30, one of Apple’s best compact Macs! In the previous episode, we stripped down the original logic board and transferred its components to a newly manufactured replica. Now, we continue where we left off and tackle the remaining steps to revive this battery-damaged SE/30.
If you missed Part 1, you can check it out here: [Part 1: Stripping Down and Transferring Components](https://youtu.be/K9OV4kSGGAc)
**Chapters in this video:**
– 00:00 Intro
– 00:36 Figuring out the garbled video issue
– 02:04 Completing assembly of the new logic board
– 03:41 Dealing with the RTC chip
– 04:52 Fixing up the case
– 06:42 Software setup
– 07:40 Using Snooper
– 10:07 Conclusion
**Music used in this video:**
– Blue Intermission by Congus Bongus [source](https://soundcloud.com/congus-bongus/blue-intermission)
– Other music from epidemicsound.com
Keywords/Tags: Retro computers, soldering, repair
In the previous episode, we discovered that this SE/30 suffered from catastrophic battery failure. After transferring components to a new logic board, we had a working machine with a broken and garbled screen. In this video, we’ll tackle that issue and complete the rebuild.
Upon examination of the schematics, it became clear that the problem was limited to the video interface. One of the f253 multiplexers had a loose leg, so I resoldered it. Despite my hopes, the screen was still garbled, although I could now make out the blinking question mark.
Unable to find any other visible issues, I suspected a faulty chip. Thanks to a suggestion from Bolly on the forums, I ordered new f253s, desoldered the old ones using chip quick desoldering alloy, and replaced them. Finally, the screen came to life with the familiar floppy icon!
With the video issue resolved, I proceeded to complete the logic board with the remaining components and connectors. The last item to address was the rusted metal support bar, which I salvaged from the old board using a combination of solder braid, hot air, and a soldering gun.
Most components from the original board were salvaged or replaced with ease, except for the RTC chip. Corrosion had eaten away at one side, rendering it inoperable. Unable to find a replacement, I temporarily borrowed one from a Macintosh SE with an in-tech logic board.
Once the logic board was completed, I turned my attention to fixing up the case. A rusty patch near the battery required treatment with a Dremel steel brush, rust converter, and a coat of silver metal paint. The floppy drive also received some much-needed attention with new grease.
After wiping off the case, it was time for reassembly. I opted for an 80 Max Cassie drive as the original hard drive was not in good shape. With system 7.1 installed from floppies, I connected the SE/30 to a PowerBook G3 over serial using AppleTalk. However, a problem arose as the SE/30 refused to show up in the chooser.
To troubleshoot, I ran diagnostics using Snooper, a utility for old Macs. However, testing the serial ports required loopback plugs, which were no longer included with Snooper. I created my own by connecting wires, enabling the testing of communication over the serial port.
Join me in the next part of this restoration series as we continue troubleshooting the serial port issue and explore the software setup further. And stay tuned for more retro computing adventures!
The Macintosh SE/30, one of the best compact Macs Apple ever made.
Let’s continue where we left off in the last video, and finish the rebuild of this battery bombed SE/30!
Part 1: https://youtu.be/K9OV4kSGGAc
Part 2: This video
00:36 Figuring out the garbled video
02:04 Completing assembly of the new logic board
03:41 Dealing with the RTC chip
04:52 Fixing up the case
Music used in this video:
Blue Intermission by Congus Bongus [https://soundcloud.com/congus-bongus/blue-intermission]
Other music from epidemicsound.com
#retrocomputing #Macintosh #restoration #repair #soldering