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Whistle Operation of ZW transformer

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  • Member since
    April 2003
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Whistle Operation of ZW transformer
Posted by Anonymous on Friday, August 1, 2003 3:37 PM
I have an originally bought ZW transformer (1955). It has operated flawlessly until recently. About a month ago, I turned on the transformer and the right handle operation runs with the whistle blowing continuously without the operation of the railsound buttons or whistle lever. The left handle operates normally. I disconnected the railsound buttons, and had the same results. I then disconnected the whistle wires and still the whistle blew. Could it be something in the contacts in the handle? Please advise.
  • Member since
    April 2003
  • 305,206 posts
Whistle Operation of ZW transformer
Posted by Anonymous on Friday, August 1, 2003 3:37 PM
I have an originally bought ZW transformer (1955). It has operated flawlessly until recently. About a month ago, I turned on the transformer and the right handle operation runs with the whistle blowing continuously without the operation of the railsound buttons or whistle lever. The left handle operates normally. I disconnected the railsound buttons, and had the same results. I then disconnected the whistle wires and still the whistle blew. Could it be something in the contacts in the handle? Please advise.
  • Member since
    April 2003
  • 305,206 posts
Posted by Anonymous on Tuesday, August 5, 2003 2:50 PM
Are you sure it's not a stuck contact in the locomotive?

Neil Besougloff
editor, Classic Toy Trains
  • Member since
    April 2003
  • 305,206 posts
Posted by Anonymous on Tuesday, August 5, 2003 2:50 PM
Are you sure it's not a stuck contact in the locomotive?

Neil Besougloff
editor, Classic Toy Trains
  • Member since
    December 2001
  • From: Austin, TX
  • 10,091 posts
Posted by lionelsoni on Tuesday, August 5, 2003 3:04 PM
When you say that you disconnected the whistle wires, surely you don't mean the wires to the actual whistle motor in the tender? That would seem to be sure to stop it.

Bob Nelson

Bob Nelson

  • Member since
    December 2001
  • From: Austin, TX
  • 10,091 posts
Posted by lionelsoni on Tuesday, August 5, 2003 3:04 PM
When you say that you disconnected the whistle wires, surely you don't mean the wires to the actual whistle motor in the tender? That would seem to be sure to stop it.

Bob Nelson

Bob Nelson

  • Member since
    April 2003
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Posted by Anonymous on Tuesday, August 5, 2003 10:20 PM
In regards to replies about tender malfunction

I have tried other tenders with whistles in the malfunctioning right handle and the same thing occurs. I then took the the tenders off the right handle track and tested them on Left handle track. On the left handle track the tenders work as they should.

In regards to replies about the discounted wire.

The wire discounted was from the whistle rectifier in the transformer
  • Member since
    April 2003
  • 305,206 posts
Posted by Anonymous on Tuesday, August 5, 2003 10:20 PM
In regards to replies about tender malfunction

I have tried other tenders with whistles in the malfunctioning right handle and the same thing occurs. I then took the the tenders off the right handle track and tested them on Left handle track. On the left handle track the tenders work as they should.

In regards to replies about the discounted wire.

The wire discounted was from the whistle rectifier in the transformer
  • Member since
    December 2001
  • From: Austin, TX
  • 10,091 posts
Posted by lionelsoni on Tuesday, August 5, 2003 11:08 PM
So you disconnected the wire from the speed nut that holds the rectifier disk to the plate? If that didn't stop the whistle, I am baffled.

Bob Nelson

Bob Nelson

  • Member since
    December 2001
  • From: Austin, TX
  • 10,091 posts
Posted by lionelsoni on Tuesday, August 5, 2003 11:08 PM
So you disconnected the wire from the speed nut that holds the rectifier disk to the plate? If that didn't stop the whistle, I am baffled.

Bob Nelson

Bob Nelson

  • Member since
    April 2003
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Posted by Anonymous on Wednesday, August 6, 2003 3:46 PM
Hello Bob,

Yes, I disconnected the wire to the speed nut to the rectifier? I will observe it again and insure it was the correct wire. I did notice that the contact assembly on the left handle rod was not in the same position as the right handle contact assembly. My Lionel parts and assembly diagram from K-Line does not show the the positions of the contacts for different operations (whistle/horn, stop, and speed). Do you know the existance of any wiring diagram with different positions? Could build up between contacts cause the problem? I need to replace the carbon rollers so I will check the contacts.

Thanks,

Frederick H. Duncan

QUOTE: Originally posted by lionelsoni

So you disconnected the wire from the speed nut that holds the rectifier disk to the plate? If that didn't stop the whistle, I am baffled.

Bob Nelson
  • Member since
    April 2003
  • 305,206 posts
Posted by Anonymous on Wednesday, August 6, 2003 3:46 PM
Hello Bob,

Yes, I disconnected the wire to the speed nut to the rectifier? I will observe it again and insure it was the correct wire. I did notice that the contact assembly on the left handle rod was not in the same position as the right handle contact assembly. My Lionel parts and assembly diagram from K-Line does not show the the positions of the contacts for different operations (whistle/horn, stop, and speed). Do you know the existance of any wiring diagram with different positions? Could build up between contacts cause the problem? I need to replace the carbon rollers so I will check the contacts.

Thanks,

Frederick H. Duncan

QUOTE: Originally posted by lionelsoni

So you disconnected the wire from the speed nut that holds the rectifier disk to the plate? If that didn't stop the whistle, I am baffled.

Bob Nelson

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