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QSI Quantum Sound Decoder not resetting

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  • Member since
    March 2011
  • From: Westford MA
  • 542 posts
Posted by Tophias on Monday, February 5, 2024 6:07 PM

Douglas, never heard of that trick. Will definitely try it next time a decoder goes wonky.

Regards, Chris 

  • Member since
    March 2011
  • From: Westford MA
  • 542 posts
Posted by Tophias on Monday, February 5, 2024 6:04 PM

richhotrain

 

 
Doughless

Also, to wake up some QSIs that have been sitting for a while, several of mine seem to wake up when put on a DC track and then turn the power all the way up, where they would never wake up on the DCC track no matter what CVs were changed.  Then after woken up on DC, they work fine on DCC. 

 

 

For those of us who are owned by cats, let me just say that QSI decoders are just like cats. They do what they want to do, when they want to do it. You cannot convince them differently.

 

Rich

 

Big Smile

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Monday, February 5, 2024 10:02 AM

Doughless

Also, to wake up some QSIs that have been sitting for a while, several of mine seem to wake up when put on a DC track and then turn the power all the way up, where they would never wake up on the DCC track no matter what CVs were changed.  Then after woken up on DC, they work fine on DCC. 

For those of us who are owned by cats, let me just say that QSI decoders are just like cats. They do what they want to do, when they want to do it. You cannot convince them differently.

Rich

Alton Junction

  • Member since
    December 2008
  • From: Heart of Georgia
  • 5,406 posts
Posted by Doughless on Monday, February 5, 2024 8:43 AM

Just offering advice to others who might read this thread whilst experiencing problems.  Although it sounds like the OP solved his particular problem.

Sometimes QSI's won't reset without flicking the reed glass with your finger to dislodge it...but don't break the glass with the flick...and don't ask why I say this.....

Also, to wake up some QSIs that have been sitting for a while, several of mine seem to wake up when put on a DC track and then turn the power all the way up, where they would never wake up on the DCC track no matter what CVs were changed.  Then after woken up on DC, they work fine on DCC.

- Douglas

tsd
  • Member since
    September 2021
  • 55 posts
Posted by tsd on Monday, February 5, 2024 8:00 AM

Just wodnering, but how well were you able to speed match? Top end speed is one thing, but running in a consist another.

I've replaced many many of those QSI for people, installing a Paragon 3 or 4, which should speedmatch well even to a Paragon 2 since that algorhythm is the same between those. Many of those "upgrades" was for people having a hard time speed matching, so they wanted the newer decoder then. 

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Sunday, February 4, 2024 6:36 PM

Arto

Rich, somehow CV5 got set to "0". Which brings up another question which for which I shall start a new subject. 

Thanks, Arto.

Rich

Alton Junction

  • Member since
    January 2014
  • From: Chicago area
  • 335 posts
Posted by Arto on Sunday, February 4, 2024 6:22 PM

Rich, somehow CV5 got set to "0". Which brings up another question for which I shall start a new subject.

  • Member since
    March 2011
  • From: Westford MA
  • 542 posts
Posted by Tophias on Sunday, February 4, 2024 5:10 PM

Arto, this sounds to me like the classic QSI "won't respond" issue. Try pressing F6 twice rapidly in succession and it might "wake up" even though you did a successful reset.

Regards, Chris 

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Sunday, February 4, 2024 5:07 PM

Darn. I was ready to post some advice. What did you do to fix it?

Rich

Alton Junction

  • Member since
    January 2014
  • From: Chicago area
  • 335 posts
Posted by Arto on Sunday, February 4, 2024 4:57 PM

Nevermind. Figured it out Embarrassed

  • Member since
    January 2014
  • From: Chicago area
  • 335 posts
QSI Quantum Sound Decoder not resetting
Posted by Arto on Sunday, February 4, 2024 4:16 PM

Broadway Limited E7 with QSI decoder.

I was attempting to speed match the QSI loco to three BLI E9 Paragon2. The QSI loco top speed was much faster - about 50% faster.

In doing so I somehow changed something, not sure what, but the net result is the QSI loco responds to it's (changed) address, throttle up/down sounds, horn, etc, but now doesn't move, no throttle response.

I tried resetting the decoder on the programming track and on the main using the recommended CV procedure in the manual:

CV49=128   CV50=255   CV56=113

I got a "good" response from the DigiTrax DT402D throttle but nothing has changed

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