Gorf RAM board: Who can replace parts or fix them?

jot3

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I have been trying to get my Gorf to work. Finally found someone that had a board for sale. Got the new board...everything fired up. After about 3 hours, it failed again. It's always the RAM board.

Who can burn ROM chips and whatever else I can replace on that board. It seems to be a problem with this board. I was so sad when it broke.

I assume the smaller removable chips and roms can be replaced. All the resistors / caps seem fine on the two boards I have.

One board used newer roms (looks like something I've seen on pac-man).

So...who can sell / fix these boards? I need a new set of ROMS burned.
 
I'm pretty good with those card cage boardsets. You have me a bit confused as far as which board is causing the problem tho. You say "the ram board", but there's 2 of these...the smaller boards right at the end of the cage. The ROM board has ram on it (2114x6), so maybe you are talking about that one?

At any rate....it really doesn't matter. I have lots of extra known good boards that make troubleshooting these easier. PM me if you want me to look at it.
 
Opps...Yes ROM board

The RAM / ROM board is what I'm referring too.

For some reason my first board would just throw garbled crap on the screen and just repeat the voice forever.

The second boardset I just removed the ROM board and put it in my current set.

Everything seemed to work for about 3 hours or so of on time, then barf.

I do notice the chips and board look different between the two GORF racks. The old one looks like it matches the owners manual. The newer board set looks like the "foreign language board" there are two missing rom slots on this board and the chips had a window in them where you can see inside them.

I know the main board still works because I stuck a ROM board from a wizard of wor and it fires up right away.

So all issues point to the ROM board....just not sure what is wrong. There are smaller chips and the rom chips that are removable. I would like to just replace them all. I can put in the chips...I just need chips and new burned rom chips.
 
The 2332 roms are the mask rom equivalent of 2532 eproms. They should read in a programmer to verify the contents. The eproms in the other board are 2532s.
 
which is more reliable?

I kinda broke a pin off the ones you can see the chip threw the window. I wasn't very happy but figured I would want new chips anyway.

I'm also wondering if anything else could be causing this board to go bad....like some other board supplying too much voltage or something....just guessing in the dark right now.

So where do I get the chips?
How do you put the ROMs on the chip?
 
Boards don't "supply voltage". Its just digital signals....on or off. These boards are so old now....really *anything* can cause problems. Its not realistic to assume that its ram or rom. I kinda like troubleshooting these card cage sets. Its easy to shoot it down to a particular board by swapping in known good boards. Once you get that far, you just swap the faulty board to the front of the cage and poke around to find the problem.

You need an eprom programmer (and the knowledge to use it) and verified good rom files to make new eproms.
 
I assume buying a programmer is out of the question. I've already went over budget with this machine (wife desired budget).

Since I know it's the ROM board, I just need to get that board working.

Wonder what it would cost to get it working?
 
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