OK - thanks to some help from some of you maybe I can get this “Post” to upload.
I recently purchased a couple of used Atlas Model GP-40 Locomotives - Georgia RR #755, 756 with QSI sound. When I got them and initially ran them they were great and I liked the sound. After running them a few days they begin to slow down and finally stopped. The horn, bell, etc worked. The engine would rev when you increased the throttle but they just sat there.
Press Function 6 twice and all should be well. Watch that function 9 button as by pressing it only once your QSI engines will not move but you can rev up the engine sound or hear the horn,bell,etc. The function button 9 will shunt your QSI engine sounds completely down ( pressed enough times ) even with the engineer shutting the door as the last sound. What you didn’t see him get off the train? [:-^]
Just press the function button 6 twice in succession and everything slowly fires back up and away you go. [Y]
If that doesn’t work try performing a factory reset; entering the following values for the CVs listed:
CV49 = 128
CV50 = 255
CV56 = 113
That will return your QSI decoders to their original settings. Needless to say, you’ll need to reprogram the loco’s addresses on the programming track. (Or, run them on address “3”.)
If the suggestions about resetting the decoder, etc. don’t help, perhaps this might help.
We recently had a collection of HO scale locomotives donated to our club. Two of them would not run at all. They are all the older Athearn blue box models without decoders.
I discovered that the bearing blocks on the worm gears were completely seized up from lack of lubrication. A small pair of pliers was required to even remove the bearings so they could be lubricated.
Since the OP’s engines were e-Bay purchases, they too may require lubrication depending on how old they are and under what conditions they have been stored.
The statement that they gradually slowed down and eventually stopped tends to indicate a lack of lubrication more than a problem with the decoders.
Actually Larry the F9 button pressed once while your QSI engine is setting still ( say on a siding ) may benefit you for the engine is now on standby with the engine,air compressor ( whatever ) sounds are sounding off while you are running other engines. For example say you accidentally bring that idling engine’s number up, well no prob as nothing happened and you did not plow that engine into a diverged switch. Anyway ole #9 comes in handy sometimes, then just double click F6.[:D]
Pretty much everyone who has Atlas Gold loco’s have experienced the same issue at some time. The shutdown feature sounds neat but you then walk away from it for a few days and when you return you forget about it.