Model F refurb

What I tried

Complete disassembly on both boards. Every key pulled and cleaned, the steel frame cleaned, then an electric duster at high RPM through everything. Loud.

What I measured

Nothing. It’s a passive device. I cleaned and tested every key.

What broke or surprised me

Nothing broke. Both work fabulously. I now understand what the eBay listings mean by “clicky.”

Next

Get the 5271 up.