Hi- I'm new to the group after meeting Evan at Infoage recently. My 12 year old son is a vintage computer/vintage video game fan. We picked up a non-working Commodore 64 as our first project. We watched a few YouTube videos and ran the suggested basic diagnostics and found that the power supply produces the correct voltages, the fuse is good, and there is the correct voltage at several key locations on the board. Connecting the RF modulator to a TV doesn't change the picture (still only snow) and connecting via the 8 pin jack to a Commodore monitor produces nothing. The computer is an cosmetically good shape and does not appear to have ever been opened up as the RF shield was intact. I note that only three of the large chips are on sockets. Any suggestions for next steps? Thx, Mike