Hi guys, last days i got for free a Macintosh Classic II that need restoration and fixing. I uploaded some pictures on imgur and as you can see the issue is the classic vertical bars. I read online that for similar issue need recapping. I cleaned the board with distilled water and some soap and let it dry, then i cleaned again with lot of IPA 99% and I recapped with THT capacitors (I didn't have the smd ones cap at time). Some pads lifted off because i didn't use immediately the hot air station, but I recovered as you can see in pictures. After many cleaning and many tests the issue remains. I checked the MC68030 clock with multimeter (i don't have an oscilloscope) and i got 2.42v and I suppose could be ok by the assumption of 5v / 2. The reset pin on cpu is ok too it change state from LO to HI at power on and when i press the reset button. The board is version 820-0401-B. I didn't recapped the analog board because i verified the voltages on the connector that goes on logic board and i have +12v, -12v, +5v and +5v. Now I'm a bit stuck and I'm out of ideas as this is the first time I try to fix this kind of computer. I really need your help and any suggestion is appreciated. Thank you so much in advance!
https://imgur.com/a/yJtGftx
https://imgur.com/a/yJtGftx
Last edited by a moderator: