As I told here before my other Lisa has also the "strange unused power connector". See below. It say on the casing also that it is a A6S0300P There is also the PSU I can't find…

max1zzz said: did you replace both 74s244's or just one? Click to expand... just one i replaced. which was near the cpu. i have to replace one more ? thanks for readin…

Thanks for all the suggestions! I think I'm going to have a look at it this friday, I'll keep you updated with my findings!

did you replace both 74s244's or just one?

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…

The two 26 pin ribbon cables are for the upper and lower twiggy drives, these cables have both data and power in them.  The other 3 wire plug is for nothing, Apple never used this …

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…

And this is why I love this group. Great info here!

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…

The Apple part number may be different on the label, I don't know if it is or what is should be to indicate a 2/10. The normal differences that I look for to indicate a Lisa 2/10 …

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…

Thank you for this update. So this was a formally Lisa! Nice to know! Could you tell me two things: -Is it normal to find a sticker on such a Lisa that indicates that it is a Mac…