Hi
Thank you maniacminer, for your most instructive reply, rechecked the readings only to find I had recorded both TR6 and F1 incorrectly, table below shows TR6 at fault.
As per your instructions worked back up the chain to find there is no signal on ic40 pin 4, with 4MHz signal going into pin 11 of u43 but no signal on its output pin 10, removed R94 to isolate the pin. Hoping that replacing the 74S04 will fix the fault.
Will keep you informed.
Thank you maniacminer, for your most instructive reply, rechecked the readings only to find I had recorded both TR6 and F1 incorrectly, table below shows TR6 at fault.
As per your instructions worked back up the chain to find there is no signal on ic40 pin 4, with 4MHz signal going into pin 11 of u43 but no signal on its output pin 10, removed R94 to isolate the pin. Hoping that replacing the 74S04 will fix the fault.
Will keep you informed.
Statistics: Posted by stryker — Sat Jun 15, 2024 9:17 pm