Rip Off display of vectors question

I just acquired a "non-working" Rip Off this past weekend, and after
about 15 minutes I had it up and running (which is certainly NOT a
testament to my skill and understanding of the electronics...). It
turns out, there was a broken pin on one of the EPROMs (specifically
R7). Short of burning a new EPROM, I "remounted" the chip so the socket
has complete contact with all the legs of the chip. Fired the game up
and it plays. All except for one thing. I am missing several vectors
during gameplay. Parts of my tank are missing, parts of the enemies are
missing, and none of the missile or gun traces show up. The game still
plays and recognizes all inputs and actions.

Should I assume that the suspect EPROM is not making full contact, or is
there another possibility?

Also,for anyone looking to purchase a Rip off, there will be one coming
up for sale in Louisiana, although the seller may put it on eBay. I
don't know the price, but you can contact me for details.

tom
Received on Mon Oct 18 12:34:31 1999