Tempest repair log – auto firing logic issue
Status: FIXED
Repair cost: $0.50
KLOV Post: http://forums.arcade-museum.com/showthread.php?t=156908
Symptom: Single shot firing doesn’t work. Holding fire button down for auto-fire does work.
Diagnosis: Since firing works, button is working. Logic issue.
Fix:
- 10/30/2010 – Traced fire button back to 74LS157 @ D6 (Aux board). Replaced chip and single shot firing now works.