Strange Flashers

[Paul R Owen]

The Flashers on my Roadshow are misbehaving. They come on and stay on or do not work at all.
The main Power Driver Board has been swapped.
There are no short-circuits on the playfield.
We are now at a loss. Can anyone offer some help on this?:frusty:

 

[Moonraker]

Try swapping the MPU (rather than the power drive board) and see if the problem is resloved...

 

[Pudsey pinball]

You might have a transistor fault on the small aux driver board that board does some flashers

 

[cooldan]

test

 

[pinballmania]

All flashers are driven off the little aux driver board top right. Check that the ribbon cable is connected properly, not reversed or only sitting on one row of pins

Andy