hello,
I'm repairing this bootleg wonder boy 3 which has a sync issue (image is slowly rolling vertically and also slightly shifted to the right with a portion that returns to the left) and missing audio.
For those who are going to suggest to trim the monitor I already did and that's the best result I can achieve. I replaced the flat cables joining the 2 pcbs because of some false contacts. Any hint on what is the section related to sync? I traced the sync pin from the jamma connector up to a 74ls08 and checked it: looked broken but the pin exiting from an and port is not connected to anything. Tried to follow the traces back but yet no result. Also if you recognize some schematics of another game that could be similar, please point me out. Thanks
I'm repairing this bootleg wonder boy 3 which has a sync issue (image is slowly rolling vertically and also slightly shifted to the right with a portion that returns to the left) and missing audio.
For those who are going to suggest to trim the monitor I already did and that's the best result I can achieve. I replaced the flat cables joining the 2 pcbs because of some false contacts. Any hint on what is the section related to sync? I traced the sync pin from the jamma connector up to a 74ls08 and checked it: looked broken but the pin exiting from an and port is not connected to anything. Tried to follow the traces back but yet no result. Also if you recognize some schematics of another game that could be similar, please point me out. Thanks
