HP 71b repair advice - won't power on with batteries or on AC adaptor

[vassilisprevelakis]

(06-07-2021 12:29 PM)Etienne Victoria Wrote:  - Later models with the cost saving, not soldered, el cheapo, plasticky, Hp41-like, so-called "Zebra strip" : these have less clearance to insert and fold a flex cable so I would advise to solder top to bottom wires directly.

I repaired my HP-71B with failed "zebra strip" the same way (by soldering wire-wrap wires between top and bottom) in the early 2000s (more or less 20 years ago -- time flies) and its still working fine.

It is a scary procedure though!

**vp
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