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TECH: Gottlieb sys 3 DMD
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plpinman
Jun 12, 2010, 12:49:52 PM6/12/10
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Just had the display driver board rebuilt, all fuses check out good
with a DMM, display is known and tested good in another machine,
havent unplugged anything with the machine on, the display does not
work at all, lol. Help please on where to go from here. Thanks!
with a DMM, display is known and tested good in another machine,
havent unplugged anything with the machine on, the display does not
work at all, lol. Help please on where to go from here. Thanks!
Jeremy
Gott Lieb?
Jun 12, 2010, 1:12:17 PM6/12/10
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Did you test the display in another GTB or was a it a different
manufacturer? If a display is on its way out, you may still get some
life out of it in a BLY/WMS game, but not a GTB. Also, check the
display's HV vertical fuse holder on the transformer panel. These
fuse holders have a high tendency of crapping out. Is the LED on the
DMD driver board blinking? If not, you may have problems with the
board or the ribbon cable which goes from the DMD controller to the
CPU board. Finally, is U8 on the DMD driver board all right? Sorry,
but I don't know how you would test it otherwise. I can't quite
recall what happens if U8 is bad or missing.
manufacturer? If a display is on its way out, you may still get some
life out of it in a BLY/WMS game, but not a GTB. Also, check the
display's HV vertical fuse holder on the transformer panel. These
fuse holders have a high tendency of crapping out. Is the LED on the
DMD driver board blinking? If not, you may have problems with the
board or the ribbon cable which goes from the DMD controller to the
CPU board. Finally, is U8 on the DMD driver board all right? Sorry,
but I don't know how you would test it otherwise. I can't quite
recall what happens if U8 is bad or missing.
I'm just tossing some things out there to check / think about.
Jim
plpinman
Jun 12, 2010, 1:15:45 PM6/12/10
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>
> - Show quoted text -
Yeah the light is blinking on the DMD board, the display is pretty new
and it was in a WMS but is very good, Rob Anthony just did all the
work on the board and tested out good and has a new U8 chip.
Jeremy
Gott Lieb?
Jun 12, 2010, 2:07:16 PM6/12/10
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Then, I would look at the vertical fuse holder first. Check the
voltages at the DMD controller. Is the HV present? If the voltage is
good at the controller, is it good at the display?
voltages at the DMD controller. Is the HV present? If the voltage is
good at the controller, is it good at the display?
Jim
Chris Hibler
Jun 12, 2010, 2:43:42 PM6/12/10
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Concur with Jim.
If Rob rebuilt the board and it tested good, there isn't much left but
the input voltages.
--
Chris Hibler - CARGPB #31
www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
plpinman
Jun 12, 2010, 2:51:31 PM6/12/10
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Did fuse holder F3 on the transformer panel and now have a nice bright
working display!
Thanks guys! Jeremy
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