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Hello! I very need one 344-0062-A chip, can you sell one? (and i can't send PM to you :( )

Maybe i have some problems with 9 and 20 pins on floppy connector? Anybody know what the voltages or signals i need to have on these pins? Maybe i can block floppy drive on motherboard?

maybe... but i said in the end of my post #5

But my HDD from Mac Pluse where is 800 kb drive And i dont know this is system problems or hardware, but if system, why i can't boot from diskette? :(

My drive: https://piccy.info/view3/15067605/2510fd26748a1fb84540d3f1bf3d8719/ And yes i was checked WIM chip, he for "super drive"

eject mechanism is works good. When i use floppy boot disk and no HDD present, my mac is trying to read disk and after few seconds eject it. But diskette is good i was try to boot another mac computer (powerbook 170) and booting from the floppy disk begins On my Mac case is writing Super Drive...

I have the same problem on macintosh ED without floppy drive)

My floppy: I make a video with my problem: Floppy drive is clean also i was try two the same floppy drives

My MAC SE almost works bit i have new very big problem (((( floppy drive don't work and i can do anything with my system... I make a install boot disk 1.44 mb with mac os 6.0.8, check this disk on another mac - booting ok But my mac can't boot :( Floppy drive (mac have syper drive) always have...

i was replace all caps on analog board but nothing happen better, all the same I think i have problem with GND and +5 volt lines, because i have resistance between them I think I have a damaged some SMD capacitor on board I think this is not normal have "that" in any of capacitors on board...

I thinked and choose another way. I have external hdd from mac 512, i was connect it to x86 pc and get image with TransMac Then i wrote this image to clean HDD But i have one problem, first hdd size is near 60 mb and second (clean) hdd have near 40 mb So TransMac have error near end of writing...

I have two classic mac's: macintosh ED (trying to fix here, on another thread) and macintosh SE (super drive) Few days ago i was trying to start my Mac SE and sure, he don't boot i and i see artefacts on screen))) I was remove motherboard and remove all chips, then wash the board. Today i try...

some voltage regilators are present on power board? or all only for screen?

I need to check contacts on power board or logic? or both? :) I have already seen some bad contacts on the power board and soldering them

First time i was reed my ROM chips and found some garbage in one chip. Another one looks good I was write new ROM (two chips) from here: https://github.com/Stephen-Arsenault/MacRoms (UK Mac Plus) Ysterday i was try to turn on my Mac without SCSI board and i can't boot and I saw nothing Only...

Ok how i can make 512 kb of ram? Because i can replace chips and i was do this few time on another computers but i can't make two layers of chips like now present on board

hmm sad news( How i can change all this memory to 1 mb simm30 module? (because I can't make two layers of memory chips, like in this version) Maybe some instruction is present on internet?

Hello all! I have old macintosh and want to fix it This is Macintosh ED (512k) with 1 meg of ram and SCSI upgrade When i turn it on i have this: My board: I have originals ROM chips but with them i have the same artefacts on screen :( With this chips i try to use another rom what i was...

how hdd can be repaired? in my powerbook 170, conner hdd 40 mb is dead too ( now i use another, was found ibm 120 mb hdd

what the problems with matrix???