Upgrading your vintage hardware doesn’t mean abandoning authenticity. In a new video, CommodoreSam tackles a practical and popular enhancement—adding Commodore 64 HDMI output using the SideProjectsLab HD-64 mod. The featured machine is a longboard 250466, a favorite among hardware modders for its durability and accessibility. Sam’s step-by-step walkthrough turns this somewhat advanced install into something even cautious retro tech fans can attempt.
Why Upgrade to Commodore 64 HDMI?
The Commodore 64 HDMI mod replaces the original RF modulator with a modern digital board. It connects directly to the VIC-II via a flex cable and installs cleanly with minimal soldering. HDMI output means you can finally plug your C64 into a modern monitor or TV and enjoy crisp, stable video—no more color bleeding or jailbars.
A Dual Output Advantage
One standout feature of the SPL HD-64 is simultaneous HDMI and analog output. That’s right—your retro system can send signal to both a CRT and a flat-panel TV at once. It’s perfect for retro gamers who want to play on a CRT but record with a capture card, or streamers who want the best of both worlds.
The Installation Process
Sam walks through:
- Removing the original RF modulator
- Soldering 5V and ground to the expansion port
- Installing standoffs and header pins
- Attaching the VIC-II inter-lever socket
- Configuring video and audio jumpers
The process requires careful handling of ribbon cables, especially when routing around other components. A torn cable almost derailed the project—but the included spare saved the day.
HDMI Results and Audio Options
Once reassembled, the HDMI output looks fantastic. Sam tests it on a basic monitor and a larger flat screen, and the image quality is sharp and color-accurate. He also configures the jumper to enable stereo audio output over HDMI—handy for setups with dual SID chips or external audio mixing.
Final Thoughts on the SPL HD-64
The Commodore 64 HDMI mod from SideProjectsLab delivers where it counts: clean output, flexible installation, and modern compatibility. If you’re a retro enthusiast looking to enhance your setup without compromising the soul of your C64, this upgrade is well worth your time.
