The voltages above were the ones coming from the pwr supply. With the RAM they are -5V (6), -11.77V (7), +5.04V (12,13), +12.71V (14) Molex are 12.33V and 5.05V RAM was maybe ju…

so -12 is too low and +12 is two high,  and what are they without the ram?

ATX connector measured voltages are -4.98V (6), -10.47V (7), +5.28V (12,13), +12.62V (14) Molex disk connector voltages are 12.71V and 5.08V

With symptoms like that how is voltage?

This one is a little bigger and you kinda have to squeeze it in the holding area but you can get it in there... at least with this you can replace the battery's when need be... Thi…

Not a bad idea. I'm still using the original pack on mine but I'm sure it will die one day.

Ok so I found a great solution to replace the battery..... Purchase these http://www.ebay.com/itm/180979418921?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT …

Awesome man , Did you get MLCC's on there or stock Panasonic electrolytics? I forgot. I'm sure blob would be happy! I think he just turned 71

Alright. I'm going to order up a set then, it should really help when this thing decides to give me trouble in the future.

just got my boards back, yup the Classic II is the 4 Rom version.

Hello, I'm new to the forum and Macintosh. I recently bought a non working SE/30 on eBay that came with a nice surprise in the form of a (hopefully working) network card. -Turned…

nothing too significant. 

I thought for the Classic II's there was quite a bit of difference between the two revisions?

Depending on the stiction, I find it can take more than a light rap on the side of the machine. In my Classic II's case, I had to brace it with one hand and hit it as hard as I cou…

If stiction is the problem, a light tap on the side of the hard drive can temporarily help. Not always, but it's happened before. If it does get the drive going, don't turn it off …

pretty sure the differences between the ROM 1 and 2 versions are not important.  If you decide you want to be particular, thats totally cool,    but if you are really trying to fix…

uniserver said: BLOB is definitely retired from reverse engineering and schematics! hasn't worked on a board in over two years. But I called him up and asked em very nicely a…

yes he has those Q840av Schematics!

How about Quadra 840av schematics? I have not one, not two, but THREE dead boards I'd like to get working someday. And anyone asks, yes, they've been recapped and washed. There's…

good question, i forgot what one i sent em. 

Is the Classic II the 2 ROM chip version (Rev 2), or the 4 ROM chip version (Rev 1)?

maybe its got the stiction? maybe you could try this? https://www.thinkclassic.org/viewtopic.php?id=263 other wise you can get a SCSI2SD for it.  I would say the Classic II is w…

as far as i know all he has is a PC,   He gets boards in and does the R/E and then sends them back. The Color Classic Mainboard and the Classic II main board are ones i sent em,  …

I have a recapped classic 2 mobo with an 80mb hard-drive. I plugged in the hard drive, turned the mac on and booted from the system 7 disk utilities floppy. Once the reformatting w…

Does he have regular classic and classic II?