Search results

Oh cool, thats neat. The info I heard was probably old then. Good to hear it can be worked around. Hopefully the duos work with high capacity cells because the ones I ordered are quite a bit higher than the originals. I ordered 2100mah cells. I wonder if they will be fine in the 145B/170 as well..

It had 2 fuses in it, so I just marked own where they were, I'm pretty clueless to this type of thing. I triple checked all the wiring so it should be good to go once I get the parts. I heard that the 500s are less tolerant of re-celling and may not properly accept higher capacity cells, so be...

Oh nice, I thought they were lead acid still. I wonder what the battery life would be like with one of those. The NiMH packs arent too bad for the original 100 series, I have a simple wiring diagram and picture here and they can be remade with new NiMHs for much greater capacity.

My original PSU works fine currently, but I try to avoid using it unless I need both my 170 and 145B running at the same time for something. I plan to recap it but probably only after it stops working entirely. Those are not cheap batteries, but good to see they are still available if he ever...

Yeah that's what I thought as well. I'm quite surprised it even turned on at all since the power adapters normally fail as well. No idea about those lead acid batteries though. I know there was a place on ebay selling them a while back, but they are pretty expensive.

He got it in "working" condition from facebook marketplace for $60 with floppy drive and charger, but there were no pictures of it powering on, so hopefully its working. He has some previous recapping experience so hopefully he should be fine with the process though that looks like a massive...

I just remembered, but the 170 I have does uses tantalums for the display, so there is a chance that these duos may as well, but they are grayscale compared to black and white, so I'm not entirely sure on this. Wow that's a lot of caps on the 100 boards :oops:. My friend bought one recently and...

Hello, I just ordered a duo 280 and I was wondering if you still happened to have the capacitor values from the logic board. It would be very helpful to me as my duo will take several weeks to arrive before I can pull it apart and get the values. It helps document the process for others like us...

Thanks for the info! I'll be sure to let my friend know about the caps, and about your website too. He will be able to provide images as well, so just in case they are different you can have images for that too. I will make sure to get the values for the LCD as well. I will link him to this...

I was shocked that I got it for so low! I fully expected it to go for well over $150 at least! Its my first duo and I was not willing to pay ebay prices so it took a long while of waiting to find. I will have to look around a bit to see if I can find the values. Hopefully everything works well...

Got an amazing deal on it so even if it has some tunnel vision, it would have been well worth the price. Cost me just a little more than my 170, being only $62 plus shipping and included a small dock for scsi and adb and its original charger. Already have the equipment for spot welding and cells...

Just bought a duo 280 (active matrix grayscale) so hopefully I get lucky with this one! Friend bought a duo 250 (also active matrix grayscale) as well, so going to be interesting to see what happens with them when they arrive. At the very least, should help give some more information into the...

Screen works good. Also picked up a working 145B that I can test with if needed as well.

I’m finally ready to continue troubleshooting. Screen has been recapped and I have an oscilloscope now. I heard from a friend that the reset signal may be held low but I have no idea how to check that. Any ideas on where to start with the oscilloscope?

I do have a powerbook 170 that works for testing if needed Have an oscilloscope coming soon to do some troubleshooting, should get it the same time as the capacitors. If I cant fix it, I may be able to get replacement parts online, maybe I will make it 25Mhz instead of 16.

Well it stopped chiming so that’s not great. I put my 170 cpu board onto the main motherboard of the 140 and it worked, so that narrows it down. No idea what happened.

Thanks so much for your help! I will try to update you when I get the caps and replace them.

Here is a picture of the display when on.

Yes, their looks like there is some goo coming from one of them. Can’t see the info without removing it.

Yes, there is definitely some goo so will need to be replaced. I’m not sure the specs of it so I might need to remove it to see