(Topic ID: 109642)
Linked Games
Adventures of Rocky and Bullwinkle and Friends, The
Data East, 1993-
Back to the Future: The Pinball
Data East, 1990
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Batman
Data East, 1991
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Checkpoint
Data East, 1991
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Guns N' Roses
Data East, 1994
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Hook
Data East, 1992
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Jurassic Park
Data East, 1993
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Laser War
Data East, 1987
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Quoted from PinballManiac40:No. The spec range is from .4 to .6v so that is good. Can you post a picture of all the boards in the backbox?
Can you disconnect the DMD power connector and try again?
What work did you do before it started blowing out? Or did you get it like this?
I got it that way had the blown fuse in it replaced it an blew right away again. It's at the shop so I can grab some pics when I go there again.
Quoted from PinballManiac40:To be sure, you tested the Bridge Rectifier on the right with the white/red striped wire? That shows to go to 25v solenoids. Forget about unplugging the DMD power connector. This 25v seems to only go to the saw motor and to the relay board that drives that motor. Q30 on the CPU tells the relay when to turn on. With power off, can you ohm from the tab of Q30 to the board ground (mounting screw would be find). Compare that resistance to another next to it. If Q30 is much lower resistance than another next to it, then replace Q30.
Another test you could do is to unplug CN12. If the 8amp fuse does not blow, that will be another indication that Q30 is shorted. If it does blow, you have an issue with the saw motor or the motor relay board.
Top diagram was taken from foldout page 45 of the manual. Bottom diagram was taken from page 29. https://www.ipdb.org/files/23/Data_East_1993_Adventures_of_Rocky_and_Bullwinkle_and_Friends_Full_Manual.pdf
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Now I'm stumped today the fuse is not blowing but still not working. Removed the cn12 connection no change. Rechecked the bridge rectifier .48 on all 4 posts. Unplugged dmd no change, unplugged saw motor no change. Took pics of the boards and the game to show what is working.
20200616_164354 (resized).jpg20200616_164346 (resized).jpg20200616_170816 (resized).jpg20200616_170839 (resized).jpgQuoted from PinballManiac40:Are you testing the left or right bridge rectifier?
The left one should be going to the insert lamps and I think 12v to the DMD.
No broken wires on either bridge rectifier?
The right side that has the white and red wires going to it. No broken wires solid connection.
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