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DCC Chip - Bachmann

3533 Views 15 Replies 6 Participants Last post by  Poppa Mike
Good Morning on a sunny Fathers Day.

I am chipping several Locos to run on our new DCC Layout, all has gone well UNTIL - I opened up the Bachmann Jinty Loco - it has what (I think) is a choke - 2 tiny copper coils surronding a (Graphite?) rod - wired between the pick up & motor.

To start I have wired in the chip between the pickup & (Choke?), programmed it as #5, the Hornby controller accepted the input (Red Light flashed) but the Loco refuses to run on anything other than default (#3).

Before I hack out the (Choke?) & get myself into real trouble, does any one have any suggestions.

Thanks Mike H.
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You can always leave the chokes in circuit - the caps are the ones that have to go & bachmann have a habit of tucking them away, sometimes under the motors !

It's possible that although the controller has "set" the address & acknowledged it the decoder has not "taken" it. Try again & make sure that there is 100% positive contact between the decoder & controller (clean track & pickups).

BTW - what Hornby controller are you using, because the Select does not read back.

Hope this helps.
QUOTE (Thunder @ 15 Jun 2008, 08:33) <{POST_SNAPBACK}>im not even sure what the choke supposed to do? is it the same job as a interferance supressor? I
Yes, it helps to "choke" interferance, but is not actually required for DCC as the decoders have built in supression.
QUOTE (Poppa Mike @ 15 Jun 2008, 08:48) <{POST_SNAPBACK}>I have the Hornby Select & when programming the chip it gives confirmation by flashing a Red LED as confirmation.

Regds Mike
What the Select actually does is it sends the command out & confirms that the command has been sent, but is unable to confirm that the decoder has responded if yo see what I mean.
QUOTE (poliss @ 15 Jun 2008, 16:50) <{POST_SNAPBACK}>Here's a video of a chip being installed in a Bachmann Jinty.
I remember the video clip, but remember Richards comments more so
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QUOTE (Poppa Mike @ 16 Jun 2008, 09:44) <{POST_SNAPBACK}>it seems that Digital is rather more sensitive than Analogue.
Digital is no more sensitive than anaolgue if the wiring integrity is as it should be. However, it does tent to highlight any deficiancies that may not have been noticed before. Clean track/wheels & good pickups are a must.

Locomotives that run well on analogue will be better on digital provided that the decoder is a decent one & installed & set up correctly.

First step would be to check the power feeds.
QUOTE (Poppa Mike @ 16 Jun 2008, 10:16) <{POST_SNAPBACK}>Has there been a discussion on this on the Forum?

Hi Mike,

Yes - loads - do a forum search & you should come up with the posts.

There are a couple of websites (someone will soon post the URL's !) that give useful advice on wiring, but a little time spent using decent sized wire/cable & good soldered joints will pay real dividends in the long term.
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