Quoted from Fred558:heni1977 said:
Has anyone had any other issues with these flashers other than bulbs burning out due to being wrong bulbs?
Mine are also not working. Reading this post I also ordered #1251 bulbs, but still not working.
Have test with multimeter as well.
Have the 2 red flashers ever worked?
At the top of the backboard there are 12 large flashers wired as 6 pairs. There are small GI bulbs in between each of the larger flasher bulbs. I believe the pair just to the right of center as you face the backboard are connected with the 2 red flashers that are the issue. Have you seen these backboard bulbs ever flash?
In my case, the wires to the red flashers were cut. All five bulbs were wired in series as GIs. They also removed three of the power resisters in the panel in the back of the cabinet under the play field. When I replaced the missing power resisters (the two yellow flashers on the right side of the playfield now worked), the pair of flashers at the top of the backboard glowed extremely bright continuously after you started a game. I had to remove the bulbs. After studying the schematic for the CPU board, I noticed one of the power transistors was replaced. When I tested the transistor, it was shorted. When I replaced the transistor with the correct one, the top flashers now worked. Then I hooked up the cut wires to the red flashers at the back of the playfield. And they now worked too. This was my case, yours may be different.