Recent content by Elemenoh

@Paolo B Are those online somewhere too That's cool they're in the book, but nice to have something findable online.

I'll check and add the model info. The PSU I built this list from is from an early serial 030 'NeXT Computer'.

I'm in the process of recapping a couple of NeXTCubes and was a little surprised it's kind of hard to find good cap info. So here's an attempt. The MLB/PSU info here is based on an early serial NeXT Computer. So your milage may vary if there are other revisions of these boards. The Magneto...

The video ROM isn't 'giving you' that screen per se. That screen is showing the default state of the video ram. Why were you trying to make a new video ROM in the first place? Was it because you saw this screen? If so, you likely have some broken traces or failed IC(s) near UE8.

I think the white stripe means it’s a fusible resistor (designed to fail open). If so you should replace with another fusible resistor. Get a second opinion though.

Also watch out for physical size. Smaller than original is fine, but make sure the lead spacing is the same. Sometimes you can make other lead spacings work, but it's just easier and tidier to use something that fits.

Years ago I made one out of a cheap old Verifone power adapter I found on eBay and fitted it with a female barrel connector to fit the studio display's cable. A pretty easy and cheap replacement versus trying to find an original adapter. It worked out great.

For reference here are the locations of R73/R79, R61, and R52 on the MessagePad 120 MLB. I realized I had replaced them with 4.7Ohm resistors so swapped them again with 4.7kOhm resistors but the device is still no power.

I have a MessagePad 120 that doesn't power up with a known good AC adapter. I followed this guide for the 130 at PDA-soft.de which advised reflowing U43 (mine was fine) and replacing 4x 4.64k resistors that are known to fail. A few of them were in slightly different locations compared to the...

The one I made the cap list with is 0277. I have another that is 0356. Know what the differences are between model numbers?

Yeah I got caught up on the power switch too but was able just to push it in a bit with my finger to get it to let go. That's the easy part. The rest is a puzzle. Though I got it all apart and back together, I'm not sure what the best order of take apart is. Whatever it is, is not what I did lol

No but you should be able to work backwards by measuring the hole the 'pin' goes through and the enclosure parts where it rests. Good luck!

You're missing the plunger that pushes in the switch

Sorry thought it was in service source but it’s not. Here’s the part.

Multimeter in continuity mode. No beep = blown fuse. But I doubt that's your issue. Just replied to your thread.