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Problem with a BLI USRA Heavy Mikado

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  • Member since
    June 2006
  • From: Maryville IL
  • 9,577 posts
Problem with a BLI USRA Heavy Mikado
Posted by cudaken on Friday, February 23, 2018 5:32 PM

 This is a older HO Powerhouse BLI USRA Heavy Mikado with a QSI decoder with sound. Problem is I have lost power pickup from the tender. Yes, the tender to engine is pluged in right and in fact I bought a new one from BLI and installed it. I have not had the tender wheels off.

 Engine runs fine untill is hits a turnout then it goes dead? Any ideas?

 Thank you for the coming answers.

 Cuda Ken

I hate Rust

  • Member since
    March 2008
  • From: Jacksonville, FL
  • 913 posts
Posted by gatrhumpy on Friday, February 23, 2018 6:06 PM

I would do a continuity check between each tender wheel and the loco wheels on the same side.

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Friday, February 23, 2018 7:05 PM

On the board in the tender, there are seperate connectors for the tender left and right pickups, and the feed from the loco. Perhaps the feed from the tender pickups has come loose. Or a wire is broken off.

                                --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    September 2007
  • 49 posts
Posted by Ladder1 on Friday, February 23, 2018 9:17 PM

Engine runs fine untill is hits a turnout then it goes dead? Any ideas?

Wouldnt that indicate there is a problem in the turnout?

  • Member since
    November 2013
  • 2,673 posts
Posted by snjroy on Saturday, February 24, 2018 7:28 AM

So you changed the connection but not the tender. I would start by cleaning the tender wheels and the power pickups on the wheels. 

Simon

  • Member since
    February 2005
  • From: Vancouver Island, BC
  • 23,321 posts
Posted by selector on Saturday, February 24, 2018 11:29 AM

Geeeeezzz..I really wish BLI would engineer a better connection.   I have found those tethers to be surprisingly robust, but I have little confidence in them. I keep thinking, as I pull one out or attempt to push one in, that I'm going to feel a parting wire.

Ken, you have good answers already.  I would use a meter to test the turnout, both with light pressure and with heavier pressure of the probes along both routes.  You may find that one of those two pressures reveals a bad connection at the joiners.

Also, meter the pins and wheels to check continuity using the ohm setting.  If you get no reading, an open circuit, then you have a problem from inside the plug to along the tether wires inside the insulation to the decoder, at the decoder contact, or within the decoder, or from the inputs of the decoder down the wires to the pickups, and finally possibly dirty pickups.  The tires you can see easily and will know if they are clean.

Yeah, I know, there goes another hour.

  • Member since
    June 2006
  • From: Maryville IL
  • 9,577 posts
Posted by cudaken on Sunday, February 25, 2018 6:56 PM

 Thanks for the answers folks! I have yet found the time to crack open the tender. I am hoping for something simple.

 Thanks again, Ken

I hate Rust

  • Member since
    February 2002
  • From: Mpls/St.Paul
  • 13,793 posts
Posted by wjstix on Monday, February 26, 2018 12:52 PM

If I understand the original post, you bought an older BLI 2-8-2 and replaced the tender with a new one, and now it stalls out on turnouts? If so, it may be the new BLI tender connections aren't the same as the old one (even though the plug and receptacle may look the same, the wiring could be different). Sounds like maybe it's not picking up power from the tender, or only from one side.

Stix

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