John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum
September 25, 2017, 06:14:50 PM *
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 1 
 on: Today at 02:09:42 PM 
Started by Joker CK - Last post by Joker CK
More progress made today. The game was playing with jailbars through all the background sprites so I looked to the eproms next. I Verified all the eproms against mame and they checked good. Next was the mask roms at ic 1 and ic 2 on the pcb. A bit of Google searching revealed that these had the same pinout as M27C400 and MX27C4100 bar A17 which is not connected to anything. Dumped the roms and tested them to find they didn't verify. At last some progress. 

I put my dumped roms 1 at a time in to the mame zip file for Wrestlefest and loaded it up. Bingo! With my ic 1 dump I was able to replicate the jailbars exactly. It seems that bit-rot has set in on the mask roms so I need to burn a new one using the correct mame files. Unfortunately I don't have any in my parts bin so have ordered one off of eBay. Not a cheap part either cost me around £23 for one eprom!  Once it arrives I shall update and hopefully get this board back to full health! 

 2 
 on: September 24, 2017, 12:31:37 PM 
Started by FuseBlown - Last post by FuseBlown
Hey folks,

Me Popeye seems to be missing it's spinach ...

Reseated the chips
New z80
New caps
PS is new

Going to check the rainbow cable. Other than that, I need some help figuring out what to do.

Ram issues? Thanks!




Sent from my iPhone using Tapatalk

 3 
 on: September 23, 2017, 06:42:23 PM 
Started by Joker CK - Last post by Joker CK
Picture has been restored! I redid my previous trace repair, fitted a socket for the ram chip, replaced the ram, fired it up and to my relief the picture was back! Such a relief. The board looks like crap with all the repair work but as I don't plan on selling it, I can live with it. I'm still having some issues with the background sprites having vertical lines through them and I will address those next but in the meantime I'm just glad to have any graphics at all!

 4 
 on: September 22, 2017, 11:07:05 PM 
Started by jm116 - Last post by jm116
Just as the title says Smiley

 5 
 on: September 21, 2017, 12:01:21 AM 
Started by Sphere - Last post by exegames
my second most favorite arcade game is Contra, is amazing!!

 6 
 on: September 18, 2017, 05:46:34 PM 
Started by Ed Damage - Last post by isabelolson
Have you found it?

 7 
 on: September 18, 2017, 02:31:40 PM 
Started by jtdollard - Last post by jtdollard
So I'm curious does any one know why some red tents have them and some don't? i know mine does not have one.

 8 
 on: September 17, 2017, 05:42:52 PM 
Started by Joker CK - Last post by Joker CK
Thanks for the suggestion. I've decided to replace the ram chip and put a socket in just to be doubly sure. Also redoing the trace repairs for good measure. If I don't see any change then my next plan is to work back from the edge connector as you have suggested. I'll update if any progress is made.

 9 
 on: September 17, 2017, 01:27:34 PM 
Started by Flashflood140x - Last post by BrainTaste
I've had power issues on Crusin World before, it wouldn't be delivering enough power to keep the game active.
Maybe try cranking up the power on the game a bit? It solved my issues.

 10 
 on: September 17, 2017, 01:26:14 PM 
Started by BrainTaste - Last post by BrainTaste
Hello,
I'm looking to identify and replace two air-hose fittings on this super old (and unreliable) claw machine.
The game is Dream Palace by Sega, it was manufactured from 1992-2002.
Here is a wiki link to the game:
http://segaretro.org/Dream_Palace

I have the manual, but after finding out the names of the parts, I googled the listed names to no avail.

In the manual the parts are:
SP-Con Joint 6-m5 IN & SP-Con Joint 4-m5 OUT.

Any help would be greatly appreciated.

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