New Life Games LLC
NLG Users Repair Logs and Other Ramblings. Request your very own topic. Just ask any site staff. => Channelmaniac's Arcadecomponents' Old School Repair Logs => Topic started by: channelmaniac on May 04, 2014, 06:52:02 PM
-
Model: Capcom Bowling
Symptom: No graphics. Just blocks on the screen.
Board was missing all graphics elements. It was running the Bowl-O-Rama program and sound ROMs.
Bowl-O-Rama uses the same board as Capcom Bowling but requires a daughterboard with a 2Mb EPROM for the graphics elements. This daughterboard was missing. Programmed a new program ROM and sound ROM to replace the existing ones. Programmed the 3 27C256 EPROMs for the graphics elements and inserted them into the empty sockets. Replaced a bad 74LS138 IC in the memory decode circuitry to finish the repair.
-
Model: Rim Rockin' Basketball
Symptom: Will not keep settings
Replaced dead battery and tested.
-
Model: Capcom Bowling
Symptom: Dead. Missing chips.
Replaced two missing 68B09E CPUs and a Yamaha 2203 Audio IC. Tested.
-
Model: Golden Tee 99
Symptom: Dead
Board had physical damage. Pins on the custom IC at U1 were bent and solder joints on the ODD Plane A video RAM were broken.
Board would intermittently attempt to boot. When the logic probe was put on address line A4 of the CPU RAM the board would stop trying to boot. Replaced bad 74LS04 at U40. Board would then still try to boot at fail. When the logic probe was put on address line A12 of the EPROM at PROM0 the board would quit trying to boot. Soldered a jumper wire to fix a bad trace and the board would boot but had corrupt graphics.
Resoldered the IC at U1 to fix most graphics problems. Resoldered the cracked solder joints on the ODD Plane A video RAM to fix the remaining graphics corruption.
-
Model: Golden Tee 2K
Symptom: Dead, Stuck in watchdog
Board had rodent damage.
Resoldered the 0 ohm resistors to properly match the 4Mb ROMs that were on the board. Checked the address lines and found line A12 stuck high. Found that U26, Pin 8 was dead. Soldered a jumper wire to fix and the board booted but had graphical corruption. When pins on the Odd and Even Pallette RAMs were touched with a finger the corruption would change. A trace between pin 10 (I/O3) on both RAMs was bad. Soldered a jumper wire to fix the graphic corruption.
-
Model: Pairs
Symptom: Reboots constantly
Board would power up, fail with dead battery, then reboot when you pressed the start button to continue. After this it was stuck in a reboot loop. Chip at location U28 had a split top. Replaced the IC. Custom IC chip at U1 had three bent pins that had popped loose from their solder pads. Straightened the pins, resoldered them, and tested the board. The game would play but would randomly reboot. Cleaned the fuse holder and JAMMA edge connector then tested.
WARNING: This board has a backwards JAMMA connection with the key on the right instead of the left. If plugged in backwards the 12v will pop the IC at U28.
DIPS: 1: setup, 2: modesty, 3: horiz flip, 4: sync
-
Model: World Class Bowling
Symptom: Incorrect colors and flashing graphics
Cleaned corrosion and patched a trace on pin 4 of 16. Tested.
-
Model: Capcom Bowling
Symptom: Trackball inputs not working
Successfully tested the trackball inputs. Walked the owner through some rewiring necessary to correct the trackball connections to the board. Converted the game to Coors Light Bowling at the owner's request then retested board.
-
Model: Time Killers
Symptom: Dead. Missing CPU.
Replaced missing CPU. Tested. Board would randomly reboot. Replaced socket on ROM at U53 that had corroded contacts for pins 31 and 32. Tested. Replaced dead battery with a CR2032 coin cell. Tested.
-
Model: Golden Tee Complete
Symptom: Remove hack and restore PCB
Removed a glob of hot glue and a hacked in wire for USB connectivity. Replaced missing SMT resistor, cleaned up flux from PCB, and tinned 2 traces. Patched two damaged traces using Kynar wire and installed a USB jack