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BLI F7A wiringing with a QSI decoder

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  • Member since
    June 2006
  • From: Maryville IL
  • 9,577 posts
BLI F7A wiringing with a QSI decoder
Posted by cudaken on Friday, December 9, 2016 9:30 PM

 I had to take the decoder board of my BLI F7a so I could lub the engine. Took photos of the board and plugs first. Big Smile What I failed to do was untangle the rat nest of wires, cannot tell which plug was witch. My can't they spend a extra $1.00 for driffrent plug colors?

 I tested the engine on my Decoder Pro test track so a small amount of power was used. Made some god awful sounds.

 1 Will using the Decoder Pro test track for testing hurt the decoder if wired wrong? If not, can I just switch plugs till there is no racket from the speaker and be safe?

 2 Anyone have a or can make a digram for me of which plug goes where?

 3 Is the wiring on the B Unit (Yes I know which plug is for the lights) the same? Reason I ask is the B unit has two speakers where the A only has one speaker.

 Thanks for the coming answers, Ken

I hate Rust

  • Member since
    August 2003
  • From: Collinwood, Ohio, USA
  • 16,233 posts
Posted by gmpullman on Friday, December 9, 2016 11:49 PM

cudaken
Thanks for the coming answers, Ken

Hey, Ken! Guess Who?

Well, IF our boards look the same, this is what you should find. This is from an A-B set that was new in the box so hasn't been molested.

A- unit. Does your board have the screen printing that ID's the plugs?

If not, follow these photos:

Mine are marked SP and MOT and TRACK.

Here is the B unit. The speakers are wired in series so there will only be one plug.

I hope that gets you going again. 

Umm, I just lubed the motor bearings on both these locos using the needle point applicator. The front one was tight but by probing with the point of the needle you can feel the shaft and just give the bottle a quick squeeze. The A unit was open but the B unit had black vinyl tape that I peeled back.

Best Of Luck, My Friend...

Ed

  • Member since
    October 2009
  • From: stmary's ohio
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Posted by joseywales on Saturday, December 10, 2016 12:40 PM

well if he has the earlyer BLI then is would match your board..you have the QSI..The Paragon 2 if a different setup..with no removeable sound chip..

gmpullman

 

 
cudaken
Thanks for the coming answers, Ken

 

Hey, Ken! Guess Who?

Well, IF our boards look the same, this is what you should find. This is from an A-B set that was new in the box so hasn't been molested.

A- unit. Does your board have the screen printing that ID's the plugs?

If not, follow these photos:

Mine are marked SP and MOT and TRACK.

Here is the B unit. The speakers are wired in series so there will only be one plug.

I hope that gets you going again. 

Umm, I just lubed the motor bearings on both these locos using the needle point applicator. The front one was tight but by probing with the point of the needle you can feel the shaft and just give the bottle a quick squeeze. The A unit was open but the B unit had black vinyl tape that I peeled back.

Best Of Luck, My Friend...

Ed

 

the board your showing is a QSI in the earlyer BLI engines till they switched over to Paragon2 system with no removable sound chips

  • Member since
    August 2003
  • From: Collinwood, Ohio, USA
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Posted by gmpullman on Saturday, December 10, 2016 1:02 PM

joseywales
well if he has the earlyer BLI then is would match your board..you have the QSI..

In the title of the thread he says he has a QSI board.

Happy Modeling, Ed

  • Member since
    October 2009
  • From: stmary's ohio
  • 165 posts
Posted by joseywales on Saturday, December 10, 2016 1:03 PM

wost comes to worst call BLI and see if they can email you the digram to you??..Next time use your cell phone and get a pic of it before you unplug it..Thats what id did...

  • Member since
    June 2006
  • From: Maryville IL
  • 9,577 posts
Posted by cudaken on Saturday, December 10, 2016 8:40 PM

 Thanks Ed! Bow Hum, looks like maybe the wiring is right? Sigh Will look into it more if the wife leaves me a lone.

 Josey Stop by the Jefferys Dinner and I buy you a Beer and we can talk Mopar if you like.

 Ken

I hate Rust

  • Member since
    October 2009
  • From: stmary's ohio
  • 165 posts
Posted by joseywales on Sunday, December 11, 2016 12:45 AM

sorry I didnt see that..about QSI in the title..

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