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Discussion Starter · #1 ·
I am trying to fit a TCS T1 decoder to an O gauge class 20. It has two RJH motors, one on each bogie. One bogie collects power from Left rail, the other bogie power from the right rail. I have had it working with a hornby decoder......for a while until it run away and fried the chip!! Couldn't cope with the amps no doubt. It did operate though.

Fitting the TCS T1, the chip will not accept any address I try to give it. As the controller programs, the loco nudges forward a couple of mm several times, like pulsing. Once the controller finishes the programming nothing happens. Cannot get any reaction whatsoever.

Can anyone offer any help on this?

Cheers

Derek
 

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QUOTE As the controller programs, the loco nudges forward a couple of mm several times

That means something is happening. The nudging forward (some decoders alternate between forward and reverse) means that the decoder is trying to tell the controller that it received information. My guess is that your pair of motors are just too large for programming on the programming track but I don't have enough experience of high consumption motors to be able to confidently suggest how to work around it.

David
 

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I would say disassemble it and check for shorts. I had a similar problem when programming a loco, it nudged forward as if it had been programmed, but it turned out that it had a sneaky little short circuit which was hard to find.
 

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QUOTE (poliss @ 27 Sep 2008, 14:45) <{POST_SNAPBACK}>I would say disassemble it and check for shorts. I had a similar problem when programming a loco, it nudged forward as if it had been programmed, but it turned out that it had a sneaky little short circuit which was hard to find.

I would agree with poliss i had the same happen to me ...... the culprit the grey wire with the tiniest of nicks in it after nipping on the chassis .... got away with frying the decoder that time
 

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The TCS T-1 decoder is good for 1.3A continous and a 2A peak. You may be streching it a bit trying with a two motor O guage model. I'd check the stall current of the model to find out if it's going to exceed the peak draw of the decoder. The pulsing you witnessed is normal and shows that the decoder was accepting instruction packets. Can you read back any of the Cv's you have progammed especially CV29 as the value in CV29 will determine you wether you are using a two digit or a four digit address.

Charles Emerson
Queensland
Australia

QUOTE (tutorlane @ 28 Sep 2008, 00:02) <{POST_SNAPBACK}>I am trying to fit a TCS T1 decoder to an O gauge class 20. It has two RJH motors, one on each bogie. One bogie collects power from Left rail, the other bogie power from the right rail. I have had it working with a hornby decoder......for a while until it run away and fried the chip!! Couldn't cope with the amps no doubt. It did operate though.

Fitting the TCS T1, the chip will not accept any address I try to give it. As the controller programs, the loco nudges forward a couple of mm several times, like pulsing. Once the controller finishes the programming nothing happens. Cannot get any reaction whatsoever.

Can anyone offer any help on this?

Cheers

Derek
 

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Discussion Starter · #7 ·
Thanks for the comments.

I'm using a gaugemaster prodigy advance.

I did wonder if I was pushing it using only one decoder. I'll rewire, check for shorts and if that fails get another decoder.

Cheers

Derek
 
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