Resurrecting IIci

[plb007]

Hi, I have a lot of old Mac computer here at home, I usually remove the 1/2 AA battery before putting them on storage, but It seems that I forgot this one. 

It looks in very bad shape. I start cleaning as much as I can and it start to look better. Can you guys help me resurrecting this computer ? I need to source some new replacement component. But which one ? Can the MMU and the Roms be saved ? (Dishwasher ? ) I need to find the little round component that goes off near there Y5 - 32.768 Khz. Is a clock (quartz ?)

I'm waiting for your comments. Have a look at the pictures ....



Thanks, 

Pierre

 

[trag]

If you can save the little RTC chip, then you're probably okay.    ROM contents are here:  https://www.prismnet.com/~trag/Firmware/IIci/

And can be programmed into Flash, EEPROM or EPROM chips.   The metal rectangle looks like the remains of an oscillator, which should be easily replaced.   Or for that matter, just get a ROM inator II and remove the ROM SIMM jumper.

The only other critical components there is the big square chip.

The RTC and MDU are custom Apple chips and not replaceable absent stealing from a donor board.  The other stuff can be replaced with off the shelf stuff.