To answer the rom location, they are in the correct position and facing the correct way.
would never hurt to have the latest release.
IC14 : Game Rom 1 : E000 - E7FF
IC26 : Game Rom 2 : D800 - DFFF
dewdude82: check byte for the "game roms" is at the last location of the chip
only difference between the release of L3 and L4 is in Game Rom 2,
(which the checksum is only looked at during the diagnostics)
Game Rom 1 : L3 - hex E4 | L4 - hex E4
Game Rom 2 : L3 - hex 25 | L4 - hex 28
Agreed a place to start could be to check for bad connections/roms/reset circuit/corrosion...
hope this assists.