G
Guest
Guest
Archived from groups: rec.games.pinball (More info?)
Just picked up a beautiful Embryon, which I've never owned before. I
realized that it has 4 flashers at center playfield that aren't
working. I am convinced that there is an issue on the small auxiliary
driver board under the playfield, but a few things have me baffled here
before I replace the 2 obscure components on the board.
First, according to the schematics, the auxiliary board puts out 43
volts DC to the #912 flash lamps. 912's are 13 volt lamps, wouldn't 43
volts blow them out immediately?
Where does the 43 volts come from? I see that the aux. board takes in
6.3 volts from the feature lamp circuit, but how does it become 43
volts? Is the S2800A on the aux board some type of amp?
There is a feature lamp mounted beside the aux board that has no
apparent purpose. It is also seen in the aux board schematic. It
isn't seen through an insert or anything, just screwed to the bottom of
the playfield. Is it simply there to test that the SCR on the main
lamp board is working?
Any input is appreciated!
Just picked up a beautiful Embryon, which I've never owned before. I
realized that it has 4 flashers at center playfield that aren't
working. I am convinced that there is an issue on the small auxiliary
driver board under the playfield, but a few things have me baffled here
before I replace the 2 obscure components on the board.
First, according to the schematics, the auxiliary board puts out 43
volts DC to the #912 flash lamps. 912's are 13 volt lamps, wouldn't 43
volts blow them out immediately?
Where does the 43 volts come from? I see that the aux. board takes in
6.3 volts from the feature lamp circuit, but how does it become 43
volts? Is the S2800A on the aux board some type of amp?
There is a feature lamp mounted beside the aux board that has no
apparent purpose. It is also seen in the aux board schematic. It
isn't seen through an insert or anything, just screwed to the bottom of
the playfield. Is it simply there to test that the SCR on the main
lamp board is working?
Any input is appreciated!