Re: QSI Decoder Wiring Information
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Al Silverstein
A friend of mine reported the same situation with his BLI, B&O F7B
engine which had a QSI Quantum decoder. Looking through the manual I missed the
comment about the motor going into stand bye.
I noted on another list to which I am a member someone saying they had the
similar problem a while back. The solution noted on this other list was to press
the F6 button twice quickly.
I placed the B&O engine on my test layout, pressed the F6 button twice
quickly, the engine jerked, and the motor would again function as it
should.
A close review of the QSI decoder manual indicated that pressing twice the
F6 button quickly flipped them motor control on and off. If on the motor control
would turn off and if off the motor control would turn back on.
You might want to try the above. If just may cure the problem.
Al Silverstein
From: Wil
Davis
Sent: Monday, July 22, 2019 5:01 PM
To: w4dccqa@groups.io
Subject: [w4dccqa] QSI Decoder Wiring Information My
friend has an early BLI PRR M1 that has a QSI decoder. I am unable to read
the decoder, we have tried resetting the decoder with no luck. All it will
do is sit on the track and make idle steam engine sounds. None of the
functions work, headlight, bell etc. Nor does it move. He has asked
me to replace the decoder with a current steam sound decoder. I told him I
would, if I could do it without taking the engine apart. The tender has
the Decoder that appears to be a "motherboard" that it plugs into. It
connects to to the engine with a six wire double ended female connector. I
have determined that the outside wires are track pickup. However, I am
unable to determine what the other four are other than two obviously go to the
motor and two go to the headlight. I have tried everything I can think of
to figure them out without blowing the headlight. I know I could probably
hook a 9v battery to the motor and determine if it works. However, if I
guess wrong and connect it to the headlight I may blow it. I once saw wiring
diagrams for some engine/decoders, but am not able to find it.
Anyone have any idea where i could find this information or know what the middle four wires go to? Thanks, Wil
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