Macdrone said: Since the 128 and 512 were same board when the 512 was introduced I would think so. Click to expand... I did replace the 74ls244 and then errorcode was ch…

I did replace the 74ls244 and then errorcode was chaged "020002". so i also replaced the F6 Ram. now it show the errcode "04FFFE".  

Yes those ICs are compatible from the 512 K , The ram is also compatible if you change it all and of course you will only see 128k of it.

Hey man that's trying to be rude or anything but before you waste a single second at whatever it is that you're doing there any troubleshooting and All, remove the capacitors wash…

Well if you test continuity with a meter and it's not there and should be just run a wire. I can't tell from the picture.

unity said: Yes, but to clarify does this sad mac occur without floppy in the drive? Click to expand... yep. there are not floppydisk in the drive. so maybe its not reas…

Update... I put in the RAM module from my other classic with the AB needing attntion and a pretty sad looking logic board, then went went to boot up again, only to get a garbled ch…

Galgot is right that's the display. Isn't the same as PowerBook 520? Passive matrix display ? Maybe interchangeable Yeah mine is all good except from the lcd and it turned really …

Well, looks like it was a simple fix. Pulled out the entire RAM expansion module as a unit, pulled the board for a quick visual (no leaking caps), and put it together just leaving …

gooddi said: and i can't boot with floppy because the sadmac ! thanks for reading. Click to expand... Yes, but to clarify does this sad mac occur without floppy in the d…

Mmmm I was going to do a precautionary recap soon on the machine anyway even though the machine worked perfectly and seemed in good shape. I will pull the RAM for a start and see i…

Might reseat the roms and memory. Caps of course if you have not already.

So, It would appear the first line indicates initial memory test fail, however I am not so sure how to decode the second line exactly... Also, I not on a 4th bootup attempt, where…

So I just went to boot up my Classic and got the following sad mac error... 00000002 0000FFF7 The first boot produced a bong, then the sad mac appeared, 2nd attempted boot I got…

Since the 128 and 512 were same board when the 512 was introduced I would think so.

Should be , I have a donor 512 but have not found them since moving.

max1zzz said: it could also be the 74ls244's all the ram is connected to, When i assembled and installed a MacGusto II upgrade board onto one of my 512k boards i got somethin…

it could also be the 74ls244's all the ram is connected to, When i assembled and installed a MacGusto II upgrade board onto one of my 512k boards i got something similar and the in…

uniserver said: yes all of the ram is bad… its all no good.…  you can screw around and replace one or 2… only 6 months later to have another one or two go bad... that ram is…

McD replaced my ram and it changed nothing then changed it back since it was the apple branded ram for me, which as a 128 is kinda cool for me.  I have 2 working 128's but both upg…

yes all of the ram is bad… its all no good.…  you can screw around and replace one or 2… only 6 months later to have another one or two go bad... that ram is is the worst.  the ap…

Too bad. I have a Simasima 1400, and it turns out that the 1400 is OK, its the LCD Screen that is Simasima. I would love to fix that one day. 

I looked at your pics (it did not load the first time I posted but that is on my end). Sad news. Looking at the bottom board, I saw several of the solder joints from the capacitor…

Elfen said: The "006c" is the chip location, so changes are its F11 + the one next to it. A"4264" is a 4164 DRAM Chip. Back then they were sensitive to static and heat (comp…

The "006c" is the chip location, so changes are its F11 + the one next to it. A"4264" is a 4164 DRAM Chip. Back then they were sensitive to static and heat (compared to today's ch…