HP 71B broken

[vassilisprevelakis]

(09-13-2017 03:38 PM)Dave Frederickson Wrote:  My current project is to repair a 71 by wiring the boards together.

I've done this some time ago, in fact the HP-71B I use most often is the one I fixed this way.

The zebra connector was gone and I used thin wires (used for wire wrapping) to connect the two boards. When I finished I powered up the 71B and got nothing. Thinking I fried the calculator I left it on the bench. Later I want back and found out I'd missed a wire. When I added that, it worked fine and has been working since.

You'll need either good eye sight or a big magnifying lens to do the repair.

**vp