Talon2000
Well-known member
Ok for anyone interested here's the repair log for the Asteroids Deluxe.
I think I got everything included here.
Asteroids Deluxe repair log
Upon power up got nothing.
Hooked up Fluke and checked Rom/Ram
Could read the Vector Side ok, but nothing from Program side.
Found Dead ls139 @ L2
Could now read program side, but not vector.
Seems Some of the pins on L2 were stuck so I could read the Vector side but upon replacement
they were no longer stuck.
Found Bad ls157's at F2, H2, J2, and K2 replaced and can no read Vector, and Program sides ok
However there were bad eproms @ D1, E/F1, F/H1, and R2 Burned new ones.
Power up and get watchdog.
Remove pin 1 from LS42 at L5 game now plays blind, but with some strange explosion sounds
and no thrust sound, just a faint pop.
Start troubleshooting VSM
Ground watchdog Disable, and game plays blind as well.
Pull and check custom prom @ C8 checks good.
Find bad Ls193 @ J4, and K4
Now greeted with a horrible picture.

Replaced a bad ls157 at bc/10 I now have this.


Replace both am6012 chips, and we are getting closer


Found K9 pin 3 stuck that cleared up the diagonal lines
Scaling is wrong for ships, and it appears there are no medium asteroids. Found bad ls175 @ M6
Having problems with High Score table. When going into game mode, it would display BFBFBF
while trying to load the top 3 scores. Found bad ls174 @ N10 but then the table would
now try to load FFFFFF also found bad ls244 @ M9 and bad Earam.
High Score table now works. Onto the sound problems.
Found bad Pokey, and ls164 @ P8 noise generator
All is good.
Parts
4 2516 Eproms
1 ls245
2 ls193
5 ls157
1 ls191
1 ls142
1 Pokey
2 ls164
1 ls244
1 earam
1 ls175
2 am6012
1 tl081
12 16 pin sockets
1 8 pin socket
3 20 pin sockets
1 22 pin socket
2 14 pin sockets
I think I got everything included here.
Asteroids Deluxe repair log
Upon power up got nothing.
Hooked up Fluke and checked Rom/Ram
Could read the Vector Side ok, but nothing from Program side.
Found Dead ls139 @ L2
Could now read program side, but not vector.
Seems Some of the pins on L2 were stuck so I could read the Vector side but upon replacement
they were no longer stuck.
Found Bad ls157's at F2, H2, J2, and K2 replaced and can no read Vector, and Program sides ok
However there were bad eproms @ D1, E/F1, F/H1, and R2 Burned new ones.
Power up and get watchdog.
Remove pin 1 from LS42 at L5 game now plays blind, but with some strange explosion sounds
and no thrust sound, just a faint pop.
Start troubleshooting VSM
Ground watchdog Disable, and game plays blind as well.
Pull and check custom prom @ C8 checks good.
Find bad Ls193 @ J4, and K4
Now greeted with a horrible picture.

Replaced a bad ls157 at bc/10 I now have this.


Replace both am6012 chips, and we are getting closer


Found K9 pin 3 stuck that cleared up the diagonal lines
Scaling is wrong for ships, and it appears there are no medium asteroids. Found bad ls175 @ M6
Having problems with High Score table. When going into game mode, it would display BFBFBF
while trying to load the top 3 scores. Found bad ls174 @ N10 but then the table would
now try to load FFFFFF also found bad ls244 @ M9 and bad Earam.
High Score table now works. Onto the sound problems.
Found bad Pokey, and ls164 @ P8 noise generator
All is good.
Parts
4 2516 Eproms
1 ls245
2 ls193
5 ls157
1 ls191
1 ls142
1 Pokey
2 ls164
1 ls244
1 earam
1 ls175
2 am6012
1 tl081
12 16 pin sockets
1 8 pin socket
3 20 pin sockets
1 22 pin socket
2 14 pin sockets


