Problem yup another wonderboy monsterland broken :D

[jizzfu77]

I found another monsterland, this time the issue is the background when the game scrolls left or right, it has also an audio problem (something like half of the music can be eared).
this is the video:

i think is some ttl around the background zone... but maybe someone already know where i can look!

 

[Georgian2]

It looks like the board was converted from an choplifter. You need an pal/gal from monsterland.

Thread 'Choplifter to Wonderboy monster land conversion - no scroling graphics??'

Solved - Choplifter to Wonderboy monster land conversion - no scroling graphics??

Hello, Here is my attempt to convert an sega Choplifter PCB to wonderboy monsterland. I did the conversion using this two romsets: wbmlvcd and wbml as per this thread: https://forums.arcade-museum.com/threads/choplifter-to-wonderboy-monsterland-conversion.507039/ I burned the six eproms from...

www.ukvac.com

 

[jizzfu77]

It looks like the board was converted from an choplifter. You need an pal/gal from monsterland.

Thread 'Choplifter to Wonderboy monster land conversion - no scroling graphics??'

Solved - Choplifter to Wonderboy monster land conversion - no scroling graphics??

Hello, Here is my attempt to convert an sega Choplifter PCB to wonderboy monsterland. I did the conversion using this two romsets: wbmlvcd and wbml as per this thread: https://forums.arcade-museum.com/threads/choplifter-to-wonderboy-monsterland-conversion.507039/ I burned the six eproms from...

www.ukvac.com

thanks for the reply! I don't think it's a conversion, the text is in Italian with the title screen in Japanese.
I think it's a pcb from the times, also the scrolling is present here.

 

[Georgian2]

If you watch my video, the problem is the same. Maybe your pal at ic10 is broken??

 

[jizzfu77]

i already tried to change the 4 pal/gal located in upper right of the bottom image (ic4,ic3,ic32,ic33):

lucky for me i found the gal jed files at jammaarcade site. Still same issue.

this is my board, with "my" gal still installed.

 

[Georgian2]

That pals are there to replace some other custom IC. F1 is what needs changing.

 

[jizzfu77]

That pals are there to replace some other custom IC. F1 is what needs changing.

oh ok, i'll try!

 

[jizzfu77]

tried F1 and F2, no luck still the same. This board is not a conversion and the image scrolls fine, but looks like cant read the gfx in the right position in the roms (roms are ok).

 

[Adamski]

When I had graphic glitches and sound problems with mine I found that reseating the daughter board cured it.

 

[Georgian2]

I have the same bootleg if you want me to check for activity on any pins and compare. You can use the choplifter schematics for reference. They are not 1:1 but very close.
http://techdocs.exodusemulator.com/Arcade/SegaSystem1/index.html

 

[jizzfu77]

I have the same bootleg if you want me to check for activity on any pins and compare. You can use the choplifter schematics for reference. They are not 1:1 but very close.
http://techdocs.exodusemulator.com/Arcade/SegaSystem1/index.html

thank you, maybe the chop schematics are useful for audio issues. I have another working monsterland too, i think is some ls283 near the gal/pal. Tomorrow i'll check.