XianXi
Member
Working on a TMNT board which I think is a different style board than a normal TMNT one. It is Konami though and roms were verified.
Anyway, when I got it the thing was in watchdog.
-D6 on the 68k was registering low, everything else pulsing.
-Checked the work ram and it was showing low as well.
-Pulled the work ram and put in a socket
-Checked continuity for both work ram to 68k
Without the work ram in the socket D6 on the 68k was still grounded.
-Pulled the 68k and put in a socket
-68k socket D6 is still grounded
So something on the D6 line is grounded. Am I correct in assuming that?
I checked the schematic but it seems like it's slightly different for the board I have.
Mine is the same as pictured on crazykong:
http://www.crazykong.com/pcbs/T - Z/TMNT.pcb.html
Anyway, when I got it the thing was in watchdog.
-D6 on the 68k was registering low, everything else pulsing.
-Checked the work ram and it was showing low as well.
-Pulled the work ram and put in a socket
-Checked continuity for both work ram to 68k
Without the work ram in the socket D6 on the 68k was still grounded.
-Pulled the 68k and put in a socket
-68k socket D6 is still grounded
So something on the D6 line is grounded. Am I correct in assuming that?
I checked the schematic but it seems like it's slightly different for the board I have.
Mine is the same as pictured on crazykong:
http://www.crazykong.com/pcbs/T - Z/TMNT.pcb.html
