https://cluster-site.onrender.com/tags/diagnosing/ Recent content in Diagnosing on Tenu Tech Brief Hugo -- 0.146.0 en-us Tue, 24 Feb 2026 06:03:41 +0000 https://cluster-site.onrender.com/posts/diagnosing-a-commodore-pet-video-fault-from-one-photograph/ Tue, 17 Feb 2026 20:54:51 +0000 https://cluster-site.onrender.com/posts/diagnosing-a-commodore-pet-video-fault-from-one-photograph/ • Tynemouth Software writes about an owner who had initially made contact saying they had a PET 2001, and there was no video output, and they wondered if bad ROM or RAM could cause