Tandy CoCo 3 - Hitachi 63B09E CPU Upgrade & Full System Recap

It's time to breathe new life into my vintage Radio Shack TRS-80 Color Computer 3! In this video, I upgrade the stock Motorola 6809E CPU with a powerful Hitachi 63B09E processor — offering better performance and enhanced instruction support. Then I perform a full capacitor recap on the CoCo 3 motherboard to help future-proof this classic 8-bit machine.

For those curious about how I safely removed the original 6809E CPU: I used plenty of flux, a Hakko FR-301 desoldering gun, and took my time to preserve the original chip for future use. No leg cutting here!

Join me in celebrating OctTandy (or SepTandy for the early birds) and keeping retro computing alive!

DISCLAIMER: Please do not take this video as a tutorial / advice. I'm not an expert, this is just my hobby :)

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--- Video Timestamps:

0:00 - Tandy Radio Shack TRS-80 CoCo 3 Hitachi 63B09E CPU Upgrade
1:08 - Discussing the planned upgrades and future proofing of my Color Computer 3
1:51 - Removed the keyboard and you could see how dirty the case is on the inside
2:05 - Talking about the removal of the TRIAD 512K SRAM Memory upgrade
2:10 - How you remove the CoCo 3 motherboard from the computer case
2:35 - Look at how freaking dirty the inside of the Color Computer case is!
3:24 - A quick look at the Radio Shack TRS-80 Color Computer PCB
3:37 - It's time to remove the RF shield Adrian's Digital Basement style
4:12 - Checking out the bottom of the Tandy CoCo 3 motherboard
4:49 - Looking at the original MC68B09EP IL MB28717 CPU
5:00 - Installed a brand new 40-pin socket for the upgraded CPU
5:33 - Inspecting the work that I did on the backside of the CoCo 3 motherboard
6:07 - Recapped the Radio Shack TRS-80 Color Computer 3 PCB
6:20 - Installing the Hitachi 63B09E CPU and Cloud-9 TRIAD 512K SRAM Memory board
6:35 - I cleaned the inside of the Tandy Color Computer 3 case
7:03 - Reinsalling the RF shield, TRS-80 motherboard and doing a smoke test
7:38 - Putting the computer case top back on and discussing all the upgrades
8:33 - Using the Arkanoid game cartridge to test the RGB graphics
8:48 - Outro

--- Video Links

TRS-80 Tandy Color Computer 3 Memory Upgrade:
   • Tandy Color Computer 3 - TRS-80 RAM Expans...  

Geek With Social Skills Tandy Playlist:
   • Tandy Corp / Radio Shack  

TRIAD 512K SRAM Upgrade from Cloud-9:
http://www.cloud9tech.com/Cloud-9/Har...

Hitachi 6309 CPU from Retro Rewind:
https://retrorewind.ca/63b09e

RGB Switch-a-roo SCART cable by the CoCo Man:
https://cocoman.onlineweb.shop/detail...

Lots of TRS-80 computer items from Arcade Shopper:
https://www.arcadeshopper.com/

CoCo 3 cap kit from Console5:
https://console5.com/store/tandy-radi...

SepTandy Playlist:
https://www.youtube.com/hashtag/septandy

--- Channel Links

Subscribe:
https://youtube.com/geekwithsocialski...

#RetroComputing #VintageComputer #RetroTech #OctTandy #SepTandy