Tyrone Powers
New member
Question for the Experts.
Picked up a data east Rocky and Bullwinkle with a non-working display. Initial Power up had working GI, sound and flippers but no display. After replacing fuses in the power supply and checking connections, upon power up R17 (which feeds to the -98V on the DMD board) burned up....literally. Other than it possibly having been a 1/4W versus the required 1/2 W - any ideas as to why? Once R17 blew I discovered that the 0.5A Fuse connector for F7 was fractured. Other than taking 90V to ground I can't see what this connection does from the schematic.
I can do board repair, but I have a feeling that this might be chasing down a rabbit hole that might be better served just getting a new PS board.
Curious what the community thinks. Thanks!
Picked up a data east Rocky and Bullwinkle with a non-working display. Initial Power up had working GI, sound and flippers but no display. After replacing fuses in the power supply and checking connections, upon power up R17 (which feeds to the -98V on the DMD board) burned up....literally. Other than it possibly having been a 1/4W versus the required 1/2 W - any ideas as to why? Once R17 blew I discovered that the 0.5A Fuse connector for F7 was fractured. Other than taking 90V to ground I can't see what this connection does from the schematic.
I can do board repair, but I have a feeling that this might be chasing down a rabbit hole that might be better served just getting a new PS board.
Curious what the community thinks. Thanks!