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I bought some 4164-15's and sockets from Jameco for about 1.25 USD each about two years ago for my Apple IIe repair.

Actually, I just fixed this. It was two more RAM chips, bit 3 and 4 which added together in binary is 1100 or 000C in hex. I changed chip 3 following a hunch and was left with 040008 which showed chip 4 as bad. Now with 1,3,4 all socketed and replaced it is now asking for a boot disk.

Happy New year! Looking to start the year out right by finally fixing my 128k Macintosh. I started with a ram error code for the first chip. I replaced that with a socket and a 4164-15 which I think should be compatible. Now I'm getting a code I cannot find anywhere. 04000C Any ideas? I have...

I've ordered a copy of "inside Macintosh IV" which I understand should detail the boot process. Once I get that I will pull it back out and verify that the reset button is causing the sad Mac.

Well its not a ROM problem, I read the hi and lo roms, combined them and then compared to the mac plus v3 rom from the web and they are identical. No visible capacitor damage. Edit: I have also noticed that sometimes when I hit the reset button I get a Sad Mac with code 0f000d.

OK so I have a Willem programmer, does anyone know if a EPROM or eeprom can be a drop in replacement? I can handle downloading a bin and splitting it but was hoping I could find a replacement before I tear into it again.

So is it normal for the tone to be that long? I only have my classic to compare it to but it seems to last forever.

I have swapped RAM with some 1meg 30pin 8chip simms I had. Same thing, Pram battery is removed. Tried it with and without the floppy connected, tried it with no mouse or keyboard. The board is pretty clean but I will try blowing it off and inspecting the connectors for foreign objects. I have...

Hello, I've recently picked up the compact Mac addiction. It started with a classic that had pram battery cancer, then I got another classic that just had some leaky caps. That one is all good now but then I stumbled upon a super clean Plus. The problem is it doesn't boot properly. I get a boot...