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Hi all, A few months ago, I bought my first Mac SE/30 sold-as-seen on eBay, figuring I'd take my chances on the condition of the battery. I was unlucky this time, and the battery had bombed quite badly! The machine didn't make a start-up sound, and have horizontal stripes. The original digital...

Hi all, I've got my Macintosh Performa 6400/180 up-and-running after quite a bit of work (power supply rebuild, replacing dead IDE HDD with a CF card and adapter, replacing the non-working CD-ROM drive), and I want to install Mac OS 8 from CD. I have an original UK install disc, and although I...

Hi all, The power supply has unfortunately died in my Macintosh Performa 6400 - it won't start up at all. It is a 150W unit, Apple part #614-0060, Delta model number DPS-150GB B. The PWM controller (TOP200YAI) had failed dead-short across all pins. I'm not sure whether this was the cause of...

Hi all, I recently got my hands on a Mac Plus 1MB (240V), which has unfortunately died on me. I had previously serviced the board, including touching up all of the solder joints on common problematic areas and replacing the RIFAs. It was working well until about a week ago when I turned it on...

Hi all, I have a bit of a weird issue with a Macintosh Classic II that I'm trying to repair. At first, the analogue board was seemingly completely dead, and the digital board was giving a "stripy" screen. The digital board now seems to be working OK, following a recap and a CPU replacement...

Hi all, I've got a Mac Classic analogue board with DP8 damaged due to electrolyte leakage. It's used in the -12Vdc circuit, by the looks of things. The schematic says "BY 73D", and the parts says "PH 73" or vice versa, but I can't find any information on either of these. Does anyone know the...

Hi all, I recently wrote a short article on the process that I followed for building and configuring a set of BlueSCSI SD card adapters, then using them to backup and replace the original mechanical hard drives in my Macintosh Classic and Classic II - please see below, I hope it's of use and/or...

Hi all, I’ve fixed up my Mac Classic and I’m very pleased with it so far, but I’m having some problems with its RAM expansion. It came with a 1MB RAM card with two 1MB SIMMs installed, so I should be getting 4MB RAM total. However, only 2MB shows up under system information. What’s also weird...

Hi all, I've recently got my hands on three compact Macs - a Classic and two Classic IIs. I've got the Classic and one of the Classic IIs working well, which is great. However, the other Classic II is putting up a fight. Not only is the digital board not working (recapped but needs a new CPU...