TI-99/4A Modification for Keelog Power Supply

​In this episode I am modifying my TI-99/4A by bypassing the internal AC-to-DC Conversion board in order to use the new, modern external Keelog DC Power Supply that provides all the needed +5v, -5v, and +12v DC power lines.

Website for Keelog product and modification information:
https://www.keelog.com/ti-99-4a-psu-modern-black-us-replacement-ti-99-4a-power-supply-us-plug/

Items Used/Shown in Video:

• Kaisiking S-330 Large Repair Mat
• ARCTIC EAGLE Anti Static Wrist Strap
• Dell 2007FPb 20" LCD Monitor 
• Radio Shack Digital Multimeter Cat. No. 22-168A
• Aoyue 701A++ Desoldering Station
• Radio Shack Archer 0.8mm Solder Cat. No. 64-009
• Thermaltronics FBA-TMT-TC-2 Tip Tinner
• Horsebiz Soldering Iron Tip Cleaner
• Pro’s Kit 900-0015 Helping Hands Soldering Aid
• SolidWork Safety Glasses
• Hakko-CHP-170 Micro Wire Cutter
• Screwdriver

​#TI994A #TI994B #TI99 #TexasInstruments #Keelog #4260536083069 #PSUTI99MBLUS #VintageComputing #RetroComputers #RetroGaming #TheVintNerd