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Repair Log - Bosconian

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The PCB

I received a Bosconian PCB free when another PCB I had ordered was shipped late. It was supposed to have been a working PCB, but was reporting bad RAM on the CPU board.

Closer inspection revealed a trace on the RAM's socket had been lifted off, and a jumper soldered from the socket's pin to the resistor pack next to it. I resoldered the jumper, and everything worked briefly. Then nothing.

The jumper being a solid piece of metal, it was a little tricky to work with, and I figured the solder bond would constantly break when there were minor stresses to the board. So I ran a jumper wire to a nearby 74LS245. Hmmm, now some other RAM's started reporting errors.

At this point, I've put the board away to look at more pressing issues, but I'm thinking that I may have damaged the 74LS245 while soldering the jumper wire to it. When I do get this fixed, I'll be publishing what went wrong and how it was repaired here.

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Last Modified: 12/07/01