Recent content by nkomarn

Still alive, haha! I am planning to replace the board - I tested with an oscilloscope and board seems bad. I don't know how I would really go about fixing it at this point.

@Stanley Did you ever fix the issue? I have a similar issue with my Classic II. If you got it to work, would you be able to share?

After a bit of cutting and splicing, I've soldered a nice big chunk of wire to the clips. It's not the prettiest, but it will do! :p

Might have found an issue... most of the cables underneath the clip aren't even connected. I'm going to try to solder them back on and see if it gets better.

Oh, also- is there any good way to test the display portion of the analog board?

Here's what my C13 looks like: I've also cleaned it a bit since last time. I also used those schematics (major thanks by the way) to do a lot of testing. So far, I don't see anything off, but I'll keep looking at it. Are there any more of those pads that connect multiple things? I couldn't...

I don't currently have an oscilloscope, otherwise I would test the signals. I am planning on getting one fairly soon though, so if I don't figure anything else out by then, I'll test with that oscilloscope. I gave the logic board another wash today, using some soap to possibly help out in the...

I just went back and did some more inspections on the state of the CRT stuff. I fired up the display without the back cover on the machine. The CRT heater seems to be working in the back, so I don't know what that would mean for the state of the analog board but that's just what I noticed...

Just finished doing all of the stuff you described above! Unfortunately, it still has no display. The system boots just like it did before (luckily- putting it in the dishwasher was nerve wracking), but there still isn't a picture on the display. I'm unsure as to what to do at this point. I'm...

Voltages seem fine as well, just as I suspected.

Well, that cleaning didn't do anything :/ I guess I might just have to recap it if I can't come up with more things to do.

There's nothing on the display at all- not even static. I tried fiddling with the Contrast and brightness stuff, but it makes no difference. I also tried the focus control, but as you'd expect that did nothing at all. I'm yet to test voltages, but doubt that anything will be wrong with those...

CRT seems fine- the glass bit at the end of the neck is still intact and in general the CRT is physically in great condition. I don't really have another analog board readily available, but I do know that this board worked just before I recapped it. I think there might be some bad parts on it...

So, I need some help here. I recently got hold of a Macintosh Classic II. It had the whole checkerboard pattern and all. I only remember it booting fine once and then the checkerboard thing happened. So, I recapped the motherboard with nice tantalum caps and I also did part of the analog board...