Ikari III - The Rescue by channelmaniac

Symptom: Garbled graphics a lines on the screen

Checked the board for damaged traces then started checking the video SRAM with the well calibrated finger. Found one (and received a blister on the finger) that was internally shorted. Found another one hotter than the others and checked it with a logic probe. It had bad looking signals on the data lines. Replaced both SRAM ICs and tested the game.