Upright pole position help... cant see anything but letters and numbers

pinvolio

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Upright pole position help... cant see anything but letters and numbers

i acquired a pole position game for something that was owed to me. the person who gave it to me said it worked half the time and heard the problem was an easy fix. i turn on the machine and all i see is
00000000000000sdgdfg
00000000000000hjgh0
0000000000000000
000000sdfsd

uhdfs.. and so on

ive inspected everything, nothing looks burnt out. ive tweaked a few knobs which also seem to do nothing.

is this as easy to fix as i was told with pretty much no experience or should i get rid of it?

thanks in advance
 
you may also want to try to re-seat your z80 & z8002 chips..and if that works, replace the sockets... course if it doesnt, you may want to closely inspect them anyway
 
i reseated the edge connections and the 2 z8002 chips, did not see a plain z80 chip. still has the numbers all over
 
i reseated the edge connections and the 2 z8002 chips, did not see a plain z80 chip. still has the numbers all over

The 2 z8002 chips are across the board from each other, in the same row. The z80 sits by itself a few rows over (it's another 40 pin processor)..same size as the z8002 chips.
 
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