Ghosts N Goblins Bootleg help

[cathaldub]

Have this PCB(pic below)
I know this worked at one stage until it was accidentally plugged it into a JAMMA loom without the adapter(which I no longer have) and the sound amp burnt out.

I'm building an adapter for it at the moment but when just the +5V and ground are connected the ROM chips and CPU heat up to be extremely hot very quickly, is this normal?
I don't see any shorts on the board and all the ics appear to be getting 5V and ground at the correct pins.
Thanks for your help
Cathal

 

[PaulSwan]

No, not normal. Looking at the wiring, it doesn't look outwardly that plugging it into a JAMMA harness would blow up either the audio or logic. The +12 on the PCB would have been disconnected and the +12/-5 of the JAMMA harness would end up on the video lines.

That said, if the video logic gave way and the +12 broke through onto the +5 and the PSU didn't catch it then the boards toast. Bet you won't do that again :|

Paul.

 

[VectorGlow]

cathaldub - do ALL of the EPROMs get very hot very quickly? Do you have an EPROM programmer to verify if they are okay? I once had a Sega Choplifter in for repair that someone had plugged in incorrectly - every single damn EPROM got hot real fast and, of course, every single one had be fried to hell and back (along with a few logic ICs).

Also, take note of what what Paul says re the incorrect connection to a JAMMA harness (I did that to a G'n'G about 8 years ago (in a 'blonde' moment) and it survived with no damage whatsoever).

As for yours, try verifying the EPROMs if you can - otherewise it might be repairman time (various people here carry out board repairs, me included - do you still do repairs for others Paul?).

 

[cathaldub]

Cheers for the replies lads.
Happened a long time ago(5years) when I first picked up my cabinet it
was poorly wired, the jamma connector could have been connected upside
down thinking about it there was no key on the old jamma connector. Nothing looks obviously broken/burnt out on the board, really
hoping it can be fixed.
Mainly the 5 eproms on the left(e3,e4,e5,e6,e7) get really hot. e1, e2 and the z80 get a little hot.
nothing on the second board gets hot at all
I've no programmer, Something I've always meant to invest in but never sure what to buy without breaking the bank

 

[VectorGlow]

Given your description and lack of an EPROM programmer, it might be best to send it away for repair - but only if you don't mind spending money on it.

 

[cathaldub]

What price are you talking?
I have a new audio amp on the way for it

Can you PM me?

Thanks

Cathal

cathaldub2011-09-21 09:37:47

 

[VectorGlow]

I'll PM you now.

 

[cathaldub]

Cheers
I might be able to get my hands on an eprom programmer to test out the chips over the next week

 

[VectorGlow]

Great, that will certainly help.

 

[cathaldub]

Little update
Got my hands on a programmer, read all 19 chips and saved the bin files.
Interestingly enough one of the eeproms says its missing a leg, tried cleaning sanding, etc so i'd say that needs replacing for starters.
Would anyone be able to explain how to use romindent or something similar to check them out?
Also all the roms are 16kb except the 1st one which is 4kb, is there a reason for this?
Thanks
cathaldub2011-10-24 19:25:58

 

[cathaldub]

just checked them on
Hamster's Online Rom identification http://romident.ki4swy.org/

The following roms are recognized as
8-19
Ghosts'n Goblins (bootleg with Cross)

1-7 are not recognized

cathaldub2011-10-24 19:52:10

 

[VectorGlow]

What is printed on the labels of 1 to 7 ?

If they are indeed the bootleg (with Cross) then 2 is a 27256 (32K) and so 1 and then 3 to 7 are 27128's (16K).

 

[cathaldub]

1,3-19 are Toshiba TMM271280-20
2 is an Intel D27126

I actually never noticed number 2 was a 256, I'll read that one again with the correct setting.

edit, just re-read rom2 and still not recognized.

Found this site http://www.coinop.org/RomId.aspx

so tested the read roms again there.
rom1-Unknown
rom2-Unknown
rom3-Unknown
rom4-Unknown
rom5-Unknown
rom6-Unknown
rom7-Unknown
rom8-gg6.bin
rom9-gg7.bin
rom10-gg8.bin
rom11-gg9.bin
rom12-gg10.bin
rom13-gg11.bin
rom14-gg12.bin
rom15-gg13.bin
rom16-gg14.bin
rom17-gg15.bin
rom18-gg16.bin
rom19-japan/GNG13.N4i

cathaldub2011-10-24 22:56:39

 

[cathaldub]

Now I've to pick up an eraser tomorrow,
I'm going to erase and program roms 1-6 and replace and program rom 7 as its showing as having a missing pin.
Based on the above and from looking on maws I'm thinking its the gngbl roms that seem to match what I have

cathaldub2011-10-24 22:57:44

 

[VectorGlow]

27126 ? Don't you mean a 27256?

I'm guessing that the EPROMs that are getting VERY hot have failed/been fried - you may find that you either can't erase them or re-program them.

Please keep us updated.

 

[cathaldub]

How long should I leave the proms inthe eraser?
10mins?

 

[trm]

Assuming you've got a relatively good tube in your eraser and the EPROM windows are pretty clean I find 10-20 minutes is enough. You can always do a blank check in your progger software.

If the EPROMs have been cooking that suggests an internal fault so you might not be able to program them (or get a valid blank or verify check) even after wiping.

Good luck.

 

[cathaldub]

27126 ? Don't you mean a 27256?

no idea how I typed that
yep they are 27256

 

[cathaldub]

Assuming you've got a relatively good tube in your eraser and the EPROM windows are pretty clean I find 10-20 minutes is enough. You can always do a blank check in your progger software.

If the EPROMs have been cooking that suggests an internal fault so you might not be able to program them (or get a valid blank or verify check) even after wiping.

Good luck.

Gave them 20mins
Blanked alright
but when I go to write I get an error, I'm assuming the chips are fecked so I'll hunt down some new ones
cathaldub2011-10-25 22:28:53

 

[cathaldub]

Managed to get a new programmer and reprogrammed and the board is booting for starters