Garrett, IIRCC look for a small plate (maybe a logo) to the left of the keyboard. Under that plate should be a row of rocker switches one of which should be the solution you seek. Jim On Sun, 21 May 2017, Garrett Nievin via vcf-midatlantic wrote:
Date: Sun, 21 May 2017 16:07:06 -0400 From: Garrett Nievin via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> To: vcf-midatlantic@lists.vintagecomputerfederation.org Cc: Garrett Nievin <gnievin@silvaire.org> Subject: [vcf-midatlantic] ADM-3A display problem
I'm restoring a Lear Siegler ADM-3A, and I'm not the most CRT-savvy guy around (but I did really enjoy Ian's excellent class at the most recent VCF-E).
Attached is a photo of the issue. If I crank the brightness to clearly see the raster, I can see that the text is actually displaying as dark instead of bright.
Pointers?
Cheers, Garrett
js@sdf.org SDF Public Access UNIX System - http://sdf.lonestar.org