Posted in retro on May 13th, 2024
Good news! A new video RAM chip fixed the lingering video artifacts I had. I looked up the IC model that was in it “HM6116LP-2” and found some on eBay. I had to wait a couple of weeks for them to arrive from China, but popped the first one in and it worked like a […]
Posted in retro on May 7th, 2024
I finally got around to working on the TRS-80 model 4 again, specifically troubleshooting the floppy drives. Last time I tried to boot it, the drive light would come on and it didn’t sound like it was doing anything. I suspected the belt on the bottom had deteriorated/and or lost tension and wasn’t spinning the […]
