EagleTG
Active member
Tech: Bally AS2518-54 Power Supply / Transformer Issues
I'm working on a Bally Mr. and Mrs. Pac-Man that is getting very similar readings from both TP3 and TP5 on the Rectifier board. TP3 is 44v (should be 11-16v) and TP5 is 45v. The readings are not the same between the two test points, but are very close.
This testing is being done with J2 and J4 connected, J1 and J3 removed as-per PinRepair.com.
I've swapped in a known-good rectifier board, and am getting similar results. At this point, I'm suspecting the transformer.
This transformer is slightly different than other Bally games I've seen, as it has a 120v output (assuming isolated?) for the fluorescent bulb in the backbox. Is this the only difference?
Does anyone have any further input that might help me troubleshoot? Everything I've read (and all prior experience fixing pinball) has told me that voltages are usually low or missing... This voltage being too high has me a bit lost.
Thanks!
I'm working on a Bally Mr. and Mrs. Pac-Man that is getting very similar readings from both TP3 and TP5 on the Rectifier board. TP3 is 44v (should be 11-16v) and TP5 is 45v. The readings are not the same between the two test points, but are very close.
This testing is being done with J2 and J4 connected, J1 and J3 removed as-per PinRepair.com.
I've swapped in a known-good rectifier board, and am getting similar results. At this point, I'm suspecting the transformer.
This transformer is slightly different than other Bally games I've seen, as it has a 120v output (assuming isolated?) for the fluorescent bulb in the backbox. Is this the only difference?
Does anyone have any further input that might help me troubleshoot? Everything I've read (and all prior experience fixing pinball) has told me that voltages are usually low or missing... This voltage being too high has me a bit lost.
Thanks!