Solder the pin 28 wire to the connections shown in the wiring diagram.The power supply I used had the opposite polarity as the original (old PS had center pin negative,) so I switched the polarity as seen in the wiring diagram.ĥ. Make sure the RF shielding doesn't pinch the wire (or simply ditch the RF shielding.)Ĥ. Route this wire to the top of the board, near the power input jack. Counting from pin 30 it goes: ground, audio, Vin. Locate pins A28 and B28 on the expansion connector. Lay the filter on its side and re-solder the output pins (bending them 90 degrees.)Ģ. Soldering iron, desoldering pump, x-acto knife, Philips screwdriverġ: Desolder and remove the filter shown. I used item # 16918 PS from " onclick="window.open(this.href) return false I will explain the Genesis modification in the next post.ĩ-12v ac adapter that can deliver at least 2 amps Connect a power switch between the input jack and pin 28 in the sega CD. To turn the system on and off you have 2 options:ġ. An unmodified Genesis would be on whenever the power supply is plugged in. Applying 9-12v to Pin 28 (in the genesis) powers up the 7805 regulator after the power switch. In the Genesis, the power in from the expansion connector bypasses the power switch. This can be used to power the Genesis directly from the Sega CD. It's not THAT hard, but you should have patience and experience soldering.Īpparently, Sega reserved some pins on the expansion connector meant to power accessories off the Genesis DC supply. This requires careful soldering and cutting of pcb traces. The angry video game nerd would be happy!ĭisclaimer: I am not responsible for possible damage to your system.
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