bones3010
Member
So for those of you that had chimed in on my previous SI post, thanks again for the pointers. Today I managed to get power running ad I'm seeing signs of life in this machine finally.
For review, this is a SI deluxe I'm helping a friend with. It was fairly gutted and only had a monitor and hacked up harness. I managed to trace the harness wires and found untested boards and power pcb's. After getting this all hooked up I powered up and got garbage on the screen and some random noises through the speaker which I considered encouraging. Now I know the power board seems to work as well as the monitor. I checked and adjusted voltages but no change. It doesn't play blind or respond to any buttons/coins. Since the CPU is untested I can only assume that it is the source of the problem. ...of note, after having it on for a few minutes I checked the ROM seating and they were HOT. I mean burning hot. What could this mean?
I'm wondering if there's any way to test the boards without another working SI? If not is there anyone on KLOV that test/repairs these? I'm getting out of my league once the problem goes to circuitry on a pcb. :-/
Here are some pics that may shed light (if they upload. I'm doing this from my phone ;-)
For review, this is a SI deluxe I'm helping a friend with. It was fairly gutted and only had a monitor and hacked up harness. I managed to trace the harness wires and found untested boards and power pcb's. After getting this all hooked up I powered up and got garbage on the screen and some random noises through the speaker which I considered encouraging. Now I know the power board seems to work as well as the monitor. I checked and adjusted voltages but no change. It doesn't play blind or respond to any buttons/coins. Since the CPU is untested I can only assume that it is the source of the problem. ...of note, after having it on for a few minutes I checked the ROM seating and they were HOT. I mean burning hot. What could this mean?
I'm wondering if there's any way to test the boards without another working SI? If not is there anyone on KLOV that test/repairs these? I'm getting out of my league once the problem goes to circuitry on a pcb. :-/
Here are some pics that may shed light (if they upload. I'm doing this from my phone ;-)

