Re: TECH: Capcom BBB lights "pulsing"

Are the lamps in the game LED's? When I tried to change out some of
the lamps on my game with LED lamps, they would constantly pulse/
flicker. Seems like they continually draw minimal current when they
are supposed to be "off". I had to switch back to regular
incandescent lamps.

Rob

On Jun 22, 3:25 pm, Jason Richard <JasonKRich...@xxxxxxxxx> wrote:
On Jun 22, 2:12 pm, mr tobias <john_da...@xxxxxxxxxxxxxxxx> wrote:





On Jun 22, 9:15 pm, Jason Richard <JasonKRich...@xxxxxxxxx> wrote:

I'm working on a Big Bang Bar right now with a strange lighting
problem.  All of the lights seem to pulse, for lack of a better word.
In test, when all of the lights are supposed to be on solid, they
quickly pulse from normal brightness  to dim, almost like the lamp
matrix is being swept through, but at too slow of a rate.  Another
strange thing is that even when all lights should be turned off, the
filament on every one of them can be seen VERY faintly pulsing.

I started by checking the +20V lines for the matrix, and everything is
fine (ripple is ~40mV).  I also disconnected all lamps from the matrix
and hooked up a single bulb directly to the headers and it still
pulsed.  I'm thinking that I have some kind of logic problem that is
inadvertently enabling the lamp matrix.  I believe that I have the
skills and tools to troubleshoot this, but I don't have a schematic,
which is really holding me back.

If anybody has any ideas, or better yet a schematic, I would love to
hear from you!
Thanks!
-Jason Richard

Whilst the pulsing problem you describe is abnormal, the fact that
lamps are glowing slightly when they should be off is normal for
Capcom pins. All my Capcom pins do this, and I believe it was
implemented to extend the life of the bulbs.

Good to know!  But, are the lights supposed to pulse slightly when
they are off, or should they be solidly dim?  The lights on this game
are slightly pulsing ALL of the time, which I feel is probably not
correct.- Hide quoted text -

- Show quoted text -

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