Resetting a BLI QSI decoder and down loadable QSI CV's

[jbinkley60]

I am back! That means again I could not get the sucker to resit! With all the problems I have had with BLI the QSI decoder has never been one of them.

I had the DT 400 on 00, set programing to PO and then set CV 49 =128, CV 50=255 and CV 56 = 113, nothing. I then pulled the jumper, turn on power and turn off power and installed jumper, still nothing. I then took a 2 pound hammer and beat the decoder, nothing? Hammer all wises works on the cars?

(kidding about the hammer part)

Good News, I don’t care much for the engine anyway. After we get the decoder working again I will up grade the speaker system.

Ken

This sounds like it won’t help in your situation, since you have the jumper but for others if you have an older QSI unit (without the upgrade chip) I have one secret which almost always works. Put it on an isolated piece of track with an old DC power pack. Crank up the voltage until you hear the sound system come on but before the locomotive starts moving. The take the magnetic wand and move it over the reed switch. It will reset and you’ll hear the verbal aknowledgment. I’ve had a couple of instances where I could not reset them when using DCC and this method worked. Atlas has this hidden away on their website.

[rrinker]

I REALLY think you should just follow the jumper instructions and try it that way, the heck with all those CVs just to do a reset. The only critical thing about the jumper is you have to follow the instructions as to when to have power to the track and when not to, because, I suspect from the way they tell you to do it, the decoder only checks the jumper during power up.

–Randy

[selector]

That is my recollection, Randy. I only ever had to set my older, first run, Paragon Hudson once using the jumper. I had to lift off the press-fit tender box and remove the “jumper”. The power was to be off when I removed it. Then, once it was removed, power up the loco. Nothing happens, but you know the decoder is sensing power. Then, cut off the power, restore the jumper to its position on the board, and replace the tender cover. Then restore track power. The engine should do a reset and only respond on address ‘03’.

[jbinkley60]

I REALLY think you should just follow the jumper instructions and try it that way, the heck with all those CVs just to do a reset. The only critical thing about the jumper is you have to follow the instructions as to when to have power to the track and when not to, because, I suspect from the way they tell you to do it, the decoder only checks the jumper during power up.

–Randy

I agree on your approach. In thinking, if the reed switch was just a repalcement for a jumper (so that you don’t have to disassemble anything), then it may need DC power and remove/repalce the jumper while it has power. This would be equivalent to my reed switch example. I do know that the reed switch didn’t always work when connected to DCC. It’s only happened 2 or 3 times with very early QSI decoders.

[cudaken]

Thanks Jeff for the answer. I have sort of the same problem with my BLI Class J. To get the decoder to resit it had to be powered up on DC, turn power on and off, something like that then it would take commands from by Bachmann E-Z. I thought I could get it done with the SEB.

Guess it is time to break out the old MRC 2500.

Ken