Bought a cheap IIsI from eBay (I wondered why it was cheap!) Horrible battery bomb and corrosion.
Does anyone know if there are board layouts for the PCB. I've found the schematics but some of the component references are not visible and need to replace corroded components.
I've tried looking for a super hi-res pic but not having much luck.
View attachment 39077
For starters looks like a lot of the pins on the CPU are eaten away so that will need replacing for sure. Need to scour the net looking for a replacement Also the 3 xtals look like they are done for so will also need to replace those.
Apart from that component wise it looks ok. Probably some smaller resistors/caps that need replacing but the pins on the other chips look ok. (Whether they work is another story)
And there will be a lot of track damage. This looks like a multilayer board so won't know until I start doing continuity tests on the board.
What are my chances of saving this one? Is it worth it? I've got lots of time on my hands and proficient in electronics but would like to hear some input. Am I just wasting my time? Has anyone repaired one as bad looking as this?
I've got it soaking in vinegar so will see how it cleans up.
Does anyone know if there are board layouts for the PCB. I've found the schematics but some of the component references are not visible and need to replace corroded components.
I've tried looking for a super hi-res pic but not having much luck.
View attachment 39077
For starters looks like a lot of the pins on the CPU are eaten away so that will need replacing for sure. Need to scour the net looking for a replacement Also the 3 xtals look like they are done for so will also need to replace those.
Apart from that component wise it looks ok. Probably some smaller resistors/caps that need replacing but the pins on the other chips look ok. (Whether they work is another story)
And there will be a lot of track damage. This looks like a multilayer board so won't know until I start doing continuity tests on the board.
What are my chances of saving this one? Is it worth it? I've got lots of time on my hands and proficient in electronics but would like to hear some input. Am I just wasting my time? Has anyone repaired one as bad looking as this?
I've got it soaking in vinegar so will see how it cleans up.