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Mathiputer Diagnostics

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  by Bill Degnan - 08/26/2012 16:39
The motherboard is located in display chassis. Note all of the Fairchild chips, dated from 1973-'74. I have identified the suspect transistor and resistor that are out of spec, but more issues are likely present. I noticed that someone attempted to re-solder a number of connections, perhaps in an effort to repair the unit at some time in the past. Click image for larger view.


A Fairchild SL30342 with a production date of early April 1974.


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