Eureka 38 class / QSI decoder

 
  Woolong Beginner

I accidentally pressed  F9 on my NCE throttle and my Eureka 38 shut down completely. F6 twice did not reset it. After many attempts of placing the magnet near the reed switch it reset and sprung into life (No reset voice). Several days later I accidentally pressed the horn button and it again died. I have been unable to factory reset it. I have metered the reed switch and it has a short circuit when the magnet is near it and approx 89 ohms without the magnet. I cannot read the decoder either on the main or on the program track. Decoder 3 does not recognize it either
Any suggestions would be very much appreciated

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  Aaron Minister for Railways

Location: University of Adelaide SA
I accidentally pressed  F9 on my NCE throttle and my Eureka 38 shut down completely. F6 twice did not reset it. After many attempts of placing the magnet near the reed switch it reset and sprung into life (No reset voice). Several days later I accidentally pressed the horn button and it again died. I have been unable to factory reset it. I have metered the reed switch and it has a short circuit when the magnet is near it and approx 89 ohms without the magnet. I cannot read the decoder either on the main or on the program track. Decoder 3 does not recognize it either
Any suggestions would be very much appreciated
Woolong
Does it function on a DC source? Have you tried resetting it on a DC source?

Do the pickups appear to be correct and providing power to the decoder?

I always find those magnet reset options are awkward at best. The short circuit on the reed with the magnet near suggests that at least you can activate the switch, the 89 ohms could be the impedence of the surround circuit, but it does sound a little low, without a 'known good' value to compare it to I would have expected something an order of magnitude or two greater. Can you measure the voltage across the reed switch (without the magnet) when you apply power to the loco?

Nothing looks discoloured or distorted or gets excessively hot under power does it?
  Captain Underpants Train Controller

I accidentally pressed  F9 on my NCE throttle and my Eureka 38 shut down completely. F6 twice did not reset it. After many attempts of placing the magnet near the reed switch it reset and sprung into life (No reset voice). Several days later I accidentally pressed the horn button and it again died. I have been unable to factory reset it. I have metered the reed switch and it has a short circuit when the magnet is near it and approx 89 ohms without the magnet. I cannot read the decoder either on the main or on the program track. Decoder 3 does not recognize it either
Any suggestions would be very much appreciated
Woolong
My only suggestion would be to do what I did and replace the decoder with the Tsunami TSU1000 K Class D&RGW matched with the QSI High Bass 28mm speaker and enclosure. I tried to replace the original cut back version with a fully functioned QSI decoder but had so many problems with it I lost faith in QSI and switched to Tsunami and never looked back.
  lustychant Chief Commissioner

Hey all, a quick related question.

I have a few 38's, two of which will now not react at all on DC (I dont have DCC) and one runs perfect. They all ran fine before so there was no obvious 'factory' errors with them. Any advice to suggest what to check out and how to do it would be appreciated. Perhaps it's something as simple as that reed switch being activated??? when they were put back in their boxes or perhaps something obvious that others may have experienced. I'm reasonably competent electrically ie I know the basics and have a multimeter though that's about it. My knowlege off DDC/Decoders is basically ziltch. The loco/tender connections were solid though I have not tried swapping tenders yet and will try that tonight.

Cheers for any help. I don't really want to send them back, took long enough to get them in the first place lol.

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