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Re: Electrical short


 

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Ted,

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If you had the AR connected and got faint buzz, there is probably nothing wrong with the AR.? If your AR was disconnected and you still got a faint buzz, do you have any engines, lighted cars or caboose or cars with sound modules?? Is your booster disconnected as well? In any event, I don¡¯t have a big concern over a faint buzz.?

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You can try this alternate diagnosing approach.? Make sure your booster is disconnected and attach a 9V battery.? Now you should be able to get 9V everywhere you look.? Again make sure you are not trying to go through your AR.

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Allan

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From: [email protected] <[email protected]> On Behalf Of Ted Atkinson via groups.io
Sent: Wednesday, April 09, 2025 9:20 AM
To: [email protected]
Subject: Re: [w4dccqa] Electrical short

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Allan - disconnected all auto reverser wires and the humming stopped. Don't know if this means there could be a fault in the AR or elsewhere.? I do not have electronic circuit breakers installed.

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On Mon, Apr 7, 2025 at 5:02?PM Allan AE2V via <bigboy=[email protected]> wrote:

Ted,

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You said you disconnected the reverser.? Was it disconnected when you got the faint buzzer sound?? Do you have an electronic circuit breakers installed?

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The buzzers are very sensitive.? They will sound even when you have a "high" resistance.? I haven't done a detailed study as to what will trigger them, but I think they will still make a sound with several thousand ohms in the track circuit.? If you have auto reversers, electronic circuit breakers, or frog juicers, I think these all may cause your buzzer to sound.

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The bottom line is that a high resistance will not inhibit your train from running.? So there is no need to worry about a faint buzzer sound as long as your train is running fine on the track in question.

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Allan Gartner

Wiring for DCC.

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