I have a completely dead FH board. When I follow the reset signal I can see it trigger on pin 6 of the TC0220IOC. Based on the schematics that I found, pin 8 should output the reset signal but it stays low. Is the chip shot?
Sorry but you can't simply by-pass it in this way A replacement of the TC0220IOC in on my TO-DO list and I have done some preliminary work, stay tuned!thank you for the details. I did lift pin 8 of the custom and routed the reset signal to the pad. That got me some activity in the sound section but still no boot. Looks like some address lines are also going through that custom.