LM3900 Operational Amplifer I.C.
Item #: LM3900
LM3900 Quad Op-Amp 14 pin DIP package. Used on Space Invaders PCBs for sounds.
- Missile Shot sound bad or missing, check the LM3900 at locations M4 & P4. (If just a high pitch, it could be the 4006 at N5.)
- Base Explosion sound bad or missing, check LM3900 at locations K3, K4 & K5.
- Invader Hit sound bad or missing, check LM3900 at K4.