Following a tip-off, I bought this Chinese console from a flea market for 2 euros. It looks vaguely like a Sega Megadrive II but I suspected it was probably a NES clone.
The case is labeled as KC901 Family Game, but I could not find much about it on the internet. I did learn the polarity: tip is minus and the ring is plus. I tried with 9 volts and this appears to be ok. Also, some say the A-V plugs are not really connected so there is only RF. Looking closer at the circuit board this seems to be true, the parts are soldered in but there is no connection!
|Left: the TV/power stuff, centre: the CPU/Cartridge, Right: Controllers/inputs|
I removed this and all non-essential parts and tried to connect the device to a TV, but got no picture.
Looking inside, I saw that someone had tried to re-solder a few connections and the RF, and the results are even uglier than my own solders. The circuit board surface had become damaged too.
I removed some with a solder pump, cleaned the connections and tried to get the thing running. Eventually I could get a hold of the picture via antenna, and it's a pretty solid image for an RF.
|The controller and CPU compartments are quite clean, the power/TV not so much|
|Guess if there are really 150 games...|
|What's a "Comnado"?|
Possibly the variants have been patched to create some negligible difference, but I could not be bothered to check this. The presence of Duck Hunt and Wild Gunman shows this system has been indeed sold with a light gun, but without one I can't really play them.
|The power/ TV crap, showing some of my cable additions|