The 5300c has a RAM Card in it? Open her up and press down on the cards to make sure they are properly seated. Then check your cabling. What OS is on the Card and on the HD and wh…

Weirdly appears to just be hard drive failure. It's my first sad mac. Sorry for the false alarm [or maybe not, I don't know]. The HD failure is possibly coupled with the 5300 ha…

For the record, I would have posted again sooner but I can't figure out how to convert a Newton ROM into a .stg file for the Backup feature on Active Sync/Mobile Center.  I'm hones…

Also I recapped my power board.  I find no indication it works better than the others.  I think there may be minor issues with the power boards but that mostly the power issues are…

One of these days I'll make it there.

KansasFest 2015, the 27th annual Apple II convention, is scheduled for July 14 –19 in Kansas City, Missouri. Rebecca “Burger Becky” Heineman, a prolific computer game programmer, d…

Anything I can do? Was trying to format a CF card in a PCMCIA adapter [that read on my 3400; it's not Cardbus].  First time I inserted it, the machine either froze or restarted.  …

Interesting. You had no corrosion damage. So I got mine to move from gray screen to flashing image by dishwashing the board. Personally I think the culprit is a CMOS chip on the un…

Interesting thread. I have a 3400c/240 too sitting in the closet. never could solve the problem... here is the thread if of some interest : https://68kmla.org/forums/index.php?/t…

Do you have any idea how I'd find out where the ADB controller is.  The mouse works better but sometimes it doesn't work at all.  I'll let it sit overnight again but that's not a g…

I think you may be right.  [it's worth noting I had removed and replaced (i.e. reseated) everything way prior to this so if there's a connectivity issue it's deeper or more latent.…

Yes, the "autostart" ROM came later as one of the features of the Apple II Plus. The original Rev 0 Apple IIs just booted to a screen filled with garbage text, you had to push the…

i bet you and woz would have a good ol time!

I found the answer to my own question. Yes, installing the Disk II card would map 256 bytes of ROM on the card into the computer's address space at $C600. At that point, there were…

From what I've read, the first Apple II floppy drive (the Disk II) wasn't invented until about six months after the release of the Apple II - so the computer's ROM code wouldn't ha…

Check the HD and trackpad ribbon, connector and reseat all.  You need to reseat both cables quite firmly and ensure the latch goes down properly.  The trackpad is just an ADB devic…

For documentation purposes, the issue with the disk icon not popping u,p when the screen and cursor would, was located in a CMOS chip. Now I'm having problems with the HD port an…

Still does not read the trackpad

Lol. Disregard. No disk at all with CD module, flashing disk with HD, it booted from floppy [wrong OS, hence message]. At some point it stopped displaying the flashing QM. I let…

Your point is very valid.  I lack patience, and it is a problem, particularly in an electronics-related respect.  In this case, I let the board sit overnight after a brief second w…

I admire you getting in elbows deep into fixing your Macs, but you just seem to be jumping the gun a little too early and doing all the things I'd consider a "last resort" first an…

The dishwasher seems to have killed my board. SadMike.

If this is an LVDS display ( dont know if it is or not), the gamma correction IC on the t-con likely failed. 

You sure it's not an OS install quirk? Or the GPU not being able to drive the OS?

Wish I had an answer to this but unfortunately not the case... just going to follow and hope something comes to the surface. Ive had a similar issue with a Dell CRT I was given. Ev…