mookie3three
Mr. Big's Thug
- Joined
- Apr 12, 2013
- Posts
- 203
I recently purchased a King of Dragons CPS1 board, it came without an A board so I tested it on a known working one from SF II WW. It did nothing. I checked the voltage on the C board battery and it was dead.
So I removed the battery and did the fix from the Dead Battery Society http://www.arcadecollecting.com/dead/ reburnt the 4 roms (30,31,37,38) using the ETC 910805 (I used this set as the rom names matched the labels on the board) and still nothing.
I noticed that the capacitor at CCX2 on the C board is missing. Would that prevent it from working? What type of capacitor are these? Is it ceramic? The capacitors at the other CCX positions have 10 10 A+ printed on them, what is a replacement for it?
Then I tested the C board on my known working SF II HF A & B board and it didn't boot. Either something is wrong with the fix, or there is something else wrong with C board. I double checked that pins 45 & 46 no longer have any continuity to ground, and that they have continuity to the diode where the wire is connected to.
The C board on SF II HF is the same B-21, so I put that on the King of Dragons. It boots up and plays, however lots of sprites are missing. Can you not just do a straight swap on these C boards? Would the SF II HF C board need to be modified to work on King of Dragons? I don't really want to do that.
I burnt the rooms again using a mixture of ST27C1001-12F1 & 15F, as 3 of the four roms were rated at 20F and still the sprites are missing.
Any help would be much appreciated.
Cheers
Board pic with SF II' C board:
So I removed the battery and did the fix from the Dead Battery Society http://www.arcadecollecting.com/dead/ reburnt the 4 roms (30,31,37,38) using the ETC 910805 (I used this set as the rom names matched the labels on the board) and still nothing.
I noticed that the capacitor at CCX2 on the C board is missing. Would that prevent it from working? What type of capacitor are these? Is it ceramic? The capacitors at the other CCX positions have 10 10 A+ printed on them, what is a replacement for it?
Then I tested the C board on my known working SF II HF A & B board and it didn't boot. Either something is wrong with the fix, or there is something else wrong with C board. I double checked that pins 45 & 46 no longer have any continuity to ground, and that they have continuity to the diode where the wire is connected to.
The C board on SF II HF is the same B-21, so I put that on the King of Dragons. It boots up and plays, however lots of sprites are missing. Can you not just do a straight swap on these C boards? Would the SF II HF C board need to be modified to work on King of Dragons? I don't really want to do that.
I burnt the rooms again using a mixture of ST27C1001-12F1 & 15F, as 3 of the four roms were rated at 20F and still the sprites are missing.
Any help would be much appreciated.
Cheers
Board pic with SF II' C board: