ROLLERMANZ
Well-known member
Hello Guys,
I have a Macintosh Performa 200, it has a good power supply, Hard drive, CRT.. everything is okay with it except the logic board.
The logic board has leaking capacitors, I have replaced them all with good quality ones, the motherboard has been soaked in battery distilled water for a whole night and cleaned thoroughly. the ram and SIMMS chips have been re-seated properly. even after doing all this, when the macintosh is fired up, it only shows scrambled black and white vertical lines with no start up sound. i have left this macintosh turned on for a while to see if it actually came back to its normal system display but it just stays like that forever. I have also heated the motherboard on a very low heat range with a heat gun to make sure all the solder joints are refreshed.
everything I could think off and found on the internet has been done with it but its still not come back to its normal lifestyle.
I have even also tried different RAM chips to see if thats the case but its still not helped.. what I am suspecting is that maybe the SIMMS chips are whats fiddling about. Do you guys think thats the case? I don't see any other issue with the logic board.. even if it was any solder joints, that would've been correct with the heat gun.. i really think its the SIMMS chips..
You must be think if i know the problem then why am i posting this issue here, the thing is i am not quite sure what SIMMS chips i can replace this with.. I have a working macintosh classic ii, SE, Macintosh Plus...
your help would be really appreciated.
THANK YOU in advance
See the images attached..
View attachment 4897
View attachment 4898
I have a Macintosh Performa 200, it has a good power supply, Hard drive, CRT.. everything is okay with it except the logic board.
The logic board has leaking capacitors, I have replaced them all with good quality ones, the motherboard has been soaked in battery distilled water for a whole night and cleaned thoroughly. the ram and SIMMS chips have been re-seated properly. even after doing all this, when the macintosh is fired up, it only shows scrambled black and white vertical lines with no start up sound. i have left this macintosh turned on for a while to see if it actually came back to its normal system display but it just stays like that forever. I have also heated the motherboard on a very low heat range with a heat gun to make sure all the solder joints are refreshed.
everything I could think off and found on the internet has been done with it but its still not come back to its normal lifestyle.
I have even also tried different RAM chips to see if thats the case but its still not helped.. what I am suspecting is that maybe the SIMMS chips are whats fiddling about. Do you guys think thats the case? I don't see any other issue with the logic board.. even if it was any solder joints, that would've been correct with the heat gun.. i really think its the SIMMS chips..
You must be think if i know the problem then why am i posting this issue here, the thing is i am not quite sure what SIMMS chips i can replace this with.. I have a working macintosh classic ii, SE, Macintosh Plus...
your help would be really appreciated.
THANK YOU in advance
See the images attached..
View attachment 4897
View attachment 4898