I recently acquired several new machines, but most of them are not fully functional. This Robotron seems pretty promising though.
This is what it's doing right now. It does not coin up.
https://www.youtube.com/watch?v=J0ZSym0PRXE
It was giving me a 1-1-4 error, so I replaced that RAM chip with a new hacked 4164 (I'm planning to do a full RAM swap once I get the parts to make an adapter for 4164s.) Anyway, once I replaced that RAM chip, it hasn't displayed the error but it keeps displaying a weird symbol like this http://chupnet.com/images/robotron.jpg . Any idea what that could indicate?
Also, the three LEDs on the power supply board are all lit.
I checked the voltages at the RAM and I was only getting 11.8v for 12v and 4.6v for 5v. Maybe I need to put new caps on the power supply?
Any ideas are appreciated. Thanks!
This is what it's doing right now. It does not coin up.
https://www.youtube.com/watch?v=J0ZSym0PRXE
It was giving me a 1-1-4 error, so I replaced that RAM chip with a new hacked 4164 (I'm planning to do a full RAM swap once I get the parts to make an adapter for 4164s.) Anyway, once I replaced that RAM chip, it hasn't displayed the error but it keeps displaying a weird symbol like this http://chupnet.com/images/robotron.jpg . Any idea what that could indicate?
Also, the three LEDs on the power supply board are all lit.
I checked the voltages at the RAM and I was only getting 11.8v for 12v and 4.6v for 5v. Maybe I need to put new caps on the power supply?
Any ideas are appreciated. Thanks!

