Replaced the display in a 15c - comments and quesitons

[AnnoyedOne]

(09-17-2024 11:52 AM)vaklaff Wrote:  Is the 15c pictured at the beginning of this thread is an SST one?

Based on the video SST based 15C's have two chips, Yours has three. Pre-SST probably.

   
SST 15C (from the video)

The other early Voyager models have one (SST) chip according to Charles McCord.

A1

PS: See http://www.brouhaha.com/~eric/hpcalc/voy...iants.html

PPS: From your first posted photo the 15C uses a 1LF5-0301 CPU which is a 1st/2nd generation design. The chip has a 84223 date code so it was made week 22/23 of 1984. The PCB has a 00015-80001 part number though.