(Topic ID: 288564)

Score display issues


By rvermeire

3 days ago



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  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 1 day ago by Rikoshay
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display (resized).jpg

#1 3 days ago

Picked up a machine in the attic of my uncle. Got most things up and runing but the score displays still have some issues.

When playing multiplayer it correctly counts scores, displaying them right is hoewever an issue.
Same for the credits and ball number.

Is this related to the score displays, to a connector/cable(s) or the Aux lamp driver board ?

display (resized).jpg
#2 3 days ago

Often the connectors need to be resoldered on the boards as they go cold over time. I would start by resoldering all the display connector pins and J1 on the MPU.

#3 3 days ago

what voltage do you have at TP2 in HV section of solenoid driver board, be careful when testing.

#4 2 days ago
Quoted from Rikoshay:

what voltage do you have at TP2 in HV section of solenoid driver board, be careful when testing.

How can this be measured (ohm/V ?) and what should be the outcome of the test ? (test in off or on mode?)

#5 2 days ago
Quoted from BigAl56:

Often the connectors need to be resoldered on the boards as they go cold over time. I would start by resoldering all the display connector pins and J1 on the MPU.

I've unplugged display 4 and all 3 others 'seems' to be ok on a first test...
When I do the display test menu all numbers appear on all 4 (when connected) with the same brightness... and no missing parts in the numbers.

How can all figures appear correctly on the 4th one when this one messes up in non test mode...?

#6 1 day ago
Quoted from rvermeire:

How can this be measured (ohm/V ?) and what should be the outcome of the test ? (test in off or on mode?)

with the machine turned on, using a multi meter set on DC volts, put the black lead probe to any ground, there is one on the solenoid driver board marked GND, but the ground plane or braid will do, and the red lead probe to the loop tag marked TP2.

This TP2 may be under a plastic shield, warning of the high voltage present depending on whether yours is there.

Keep a steady hand when doing this, your meter should read about 190 volts DC, which is adjustable using the nearby potentiometer.

again be very careful, but if in doubt you can check the same voltage on any of the displays themselves, but this doesn't make it any less dangerous, proceed with caution IMO

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