Hi Everyone:
The second line of my Williams Funhouse display is not functioning properly. See photos in the next post and a video of display test here:
The display had been working fine until my metal flashlight shorted the display fuse and then spanned both sides of the blown fuse to spark the display driver board. The entire display ceased to function at that point.
I was able to correct the fuse problem and I have replaced components on the display driver board that tested bad with my DMM. I replaced U1, U4, U7 and U11. The IC's at the bottom of the board (U14 through U18 and U9, U10 U12 and U13) tested fine in circuit so I left them as is. I replaced the capacitor C5 and the five bypass capacitors labelled B in the schematic.
Can anyone suggest what I might consider next?
My thanks, Harold