- Joined
- Apr 28, 2010
- Posts
- 1,075
Hi guys.
I need some help on this. Got a tmnt pcb (gx963 wide version) for repair with good gameplay, right sound but jailbars on backgrounds. Here goes a video that explain better the thing:
I found the rom on k27 without signal on pins 22 to 28, so I swapped it with a 27c4096 with the right code on it, no luck.
Repaired a trace, no luck.
Some pins on the graphic chip 51962 were without signal, so I swapped it and again no luck.
Checked the rams and found pin 20 on g28 was stuck low so I thought it was about to be finished... no luck. That pin seems not connected to anything on any pcb side.
Any ideas?
I need some help on this. Got a tmnt pcb (gx963 wide version) for repair with good gameplay, right sound but jailbars on backgrounds. Here goes a video that explain better the thing:
I found the rom on k27 without signal on pins 22 to 28, so I swapped it with a 27c4096 with the right code on it, no luck.
Repaired a trace, no luck.
Some pins on the graphic chip 51962 were without signal, so I swapped it and again no luck.
Checked the rams and found pin 20 on g28 was stuck low so I thought it was about to be finished... no luck. That pin seems not connected to anything on any pcb side.
Any ideas?