Problem with two 180 powermasters | O Gauge Railroading On Line Forum

hobojoeOGR Forum Member

I have two Lionel 180 powermasters feeding into my TIU, lately I have power issues. I tested both and one is putting out 11.7 volts and the second one 14.0 volts. What can be done to fix this problem?

Thanks, David

3/22/229:38 AM

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gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Why are you using PowerMasters in front of the TIU? Sending chopped waveforms through the variable TIU channels is a bad idea. What is supplying the input power to the PowerMasters?

hobojoeOGR Forum Member

Maybe I used the wrong word, they are the bricks ( ? ) that come with the ZW transformer.

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

OK, those are PowerHouse transformers. If they're not putting out something close to 18 volts when measured with no load, they're broken! Top suspect would probably be the relay on the logic board or simply bad wire connections. Note that the transformer power goes through the relay and that's it. Frankly, I've never seen a PH180 give low voltage, only the proper voltage or no voltage.

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hobojoeOGR Forum Member

How does one open one up?

3/23/2210:53 AM

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

You need a triangle tip screwdriver, Lionel tried to keep you from opening them. I took an old Phillips head driver and ground it down to make mine.

3/23/2211:06 AM

zhublOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

If it’s the bricks your having problems with I had a relay fail after they were not phased correctly you can find that information HERE

3/23/2211:13 AM

hobojoeOGR Forum Member

Thanks John and zhubl for the information. I will let you know our findings

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