I have an old Flying Ace arcade game that is having issues. I think it is because the bridge rectifier isn't putting out enough voltage. It is supposed to put out 24V DC but is only putting out 18V. I measured the input as 2.5 V AC. I must be doing something wrong as I don't think that would allow 18V DC to come out but I'm a rookie at this. The schematic doesn't show what the input voltage should be. Is there a way to tell what the input voltage should be? Is there a way to test the transformer to see if it is bad except to measure the voltage? Am I measuring wrong? Any help would be appreciated.

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To measure the AC I measured the 2 AC lugs on the bridge rectifier. I also swapped the leads and got the same result. Is that the wrong way to do it?

So I'm assuming the transformer is bad. Any way to find out what the output should be so I can search for a replacement? Or could it be repaired by someone that doesn't know what the voltage should be?

Manual doesn't say. Picture of the schematic with the bridge rectifier is on the 1st post. Nothing to indicate the voltage.

Would it work if I removed the DC wires from the bridge rectifier and hooked them to the output of this? It says the output is 24V DC at 6.25 A.

https://www.amazon.com/LLTOP-24V-Waterproof-Transformer-Converter/dp/B0BV9B8Y9R/ref=sxin_15_pa_sp_search_thematic_sspa

I got it resolved. I cleaned off the terminals on the transformer and now I am getting 24v DC out of the bridge rectifier and 35v ac as input. Thanks all for the help.