I picked up a Sorcerer the other day and have been trying to get it up and running. When turned on the seven segment display on the MPU board immediately shows a 7. The previous owner said everything was working fine and when he turned it on one day it did that. I have isolated the MPU on the workbench and powered it with a PC power supply and the results are the same - the seven comes up instantly. I would assume then, it is an MPU problem and not a power problem. I also reseated all the chips and tested the continuity of the legs through the board to eliminate bad sockets. I am trying now to follow some troubleshooting from Clay's guides but cannot find the test points he is referencing. He says TP1 is to the left of the batteries and TP2 is next to U21 (which I believe is the crystal) but I don't see either TP. Does anyone have a picture pointing out these TPs? Also does anyone have any suggestions on what the issue may be or where I should look next?