I just got a Mac IIfx (a dream machine ever since I used one in a middle school journalism class...the fx was the teacher's computer, of course, but we could use it to do Pagemaker faster). The photos showed a lot of rust on the RF shield so I was worried the battery exploded...but they didn't! Must have been stored outside, plus the thing was covered in bugs - As I kept cleaning more dead (I hope they were dead) things came out over and over so I had to take the RF shield out just to make sure I got them all. I was expecting to need to do a full re-cap, but much like others on here, I only had 2 aluminum leaky caps, which I replaced. I replaced the axials, although I'm waiting on the 10uF 16v and 1000uF 10v axials near the RAM to be delivered, so I don't know if that could be part of the problem.
It turns on and chimes, but I can't get any video. I've tried several adapter dip switch settings to nothing. It came with the Mac II Video card but I also tried a High Resolution card to no success.
So here's where it gets interesting: The small component C29 next to the Nubus slot closest to the power supply was rusty. C28 above it looks like the same component, as well as C31. These are all connected directly to the axial C224 near the power connector, so I'm assuming this is the main power, ergo if it's bad the Nubus won't get power. I cleaned the rust off and tried to reflow the solder. Plugged it in and hitting the power button caused the fan to start, and then the supply to click off. I re-flowed again, and now I get the chime but still no video. So C29 has an effect on the entire system. It has a marking that looks like IA4. Google brought up many different things, so I wondering how to interpret that marking so I can order a new one. IE, what is this thing?
Thanks everyone! I'm sure there will be more adventures with this thing!
- Josh
It turns on and chimes, but I can't get any video. I've tried several adapter dip switch settings to nothing. It came with the Mac II Video card but I also tried a High Resolution card to no success.
So here's where it gets interesting: The small component C29 next to the Nubus slot closest to the power supply was rusty. C28 above it looks like the same component, as well as C31. These are all connected directly to the axial C224 near the power connector, so I'm assuming this is the main power, ergo if it's bad the Nubus won't get power. I cleaned the rust off and tried to reflow the solder. Plugged it in and hitting the power button caused the fan to start, and then the supply to click off. I re-flowed again, and now I get the chime but still no video. So C29 has an effect on the entire system. It has a marking that looks like IA4. Google brought up many different things, so I wondering how to interpret that marking so I can order a new one. IE, what is this thing?
Thanks everyone! I'm sure there will be more adventures with this thing!
- Josh