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Discussion Starter #1 (Edited)
One of my PH180 powerhouse transformers is only putting out 7.56 volts. Does Lionel repair them or just get new one?
 

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I don't know that Lionel repairs them, but it probably can be repaired. Does it actually deliver any significant power at that low voltage? Sounds like the relay may have croaked or perhaps a bad internal connection. There is the switch and the circuit breaker relay in the path. I believe there is also a fuse in the primary winding, but I suspect if that was gone you'd get no power.

Lionel Powerhouse 180 Schematic.jpg
 

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As John points out likely culprits are the fuse or the relay.
A competent service guy should be able to fix it. Plan B would be to bypass the relay and add a fast breaker external to the brick. That would cost less than a new brick. Most all the electronics pictured are there to sense over current and trip the relay. By bypassing the relay you just have an 18 volt transformer without a circuit breaker.

Pete
 

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Discussion Starter #4
Thanks for the replies. I will try to get it apart and check it out otherwise I'll get to John.
 
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