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Author Topic: Reversing DCC on GF Class 57  (Read 86 times)

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Offline Jack

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Reversing DCC on GF Class 57
« on: May 19, 2020, 08:08:40 PM »

I have a Farish Class 57 that has a PCB to which you solder a wired decoder to.

As the loco stopped working today I need to remove the decoder to check that the loco still runs okay on DC. I still have the two little clips that were in place before I soldered the decoder to the PCB. The problem is I don't know which solder pads to bridge with the clips so as to return the loco to DC. I've lost/misplaced the original service sheet yet I still have the receipt from 2011!

Can someone please advise me as to which pads, 1 through 6, I need to bridge using the two clips?

I've checked on line but the only service sheets for this loco are for the later models which have a 6 pin socket fitted. I have a Farish 66 which has the same setup but the service sheet only tells you where to solder the various wires onto the PCB. No image of the PCB with clips in place.

Many Thanks in anticipation....

Today's Experts were yesterday's Beginners :)

Offline Malc

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Re: Reversing DCC on GF Class 57
« Reply #1 on: May 19, 2020, 08:19:33 PM »
One side of the clips will go to the wheel brushes, the other side will be the motor. Either a visual inspection or a multimeter will tell you.
The years have been good to me, it was the weekends that did the damage.

Offline jpendle

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Re: Reversing DCC on GF Class 57
« Reply #2 on: May 19, 2020, 08:42:43 PM »
Hi,

If its the same as the 66 then there are 7 connections on the PCB numbered 8,1,2   4,5,6,7, with a gap between 2 and 4.
One clip connects the first 3 together (8,1,2), the second clip connects 4,5,&6 together, don't put anything on pin 7.

Regards,

John P
Check out my layout thread.

Contemporary NW (Wigan Wallgate and North Western)

https://www.ngaugeforum.co.uk/SMFN/index.php?topic=39501.msg476247#msg476247

Offline Jack

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Re: Reversing DCC on GF Class 57
« Reply #3 on: May 19, 2020, 09:57:59 PM »

That's prefect John @jpendle . Just what I was after. It wasn't until after my original post did I realise that there was a 7 but no 3  :smackedface:

Thank you  :beers:

That's tomorrow's job sorted, strip one class 57 to sort non running.
Today's Experts were yesterday's Beginners :)

Offline jpendle

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Re: Reversing DCC on GF Class 57
« Reply #4 on: May 19, 2020, 10:04:57 PM »

That's prefect John @jpendle . Just what I was after. It wasn't until after my original post did I realise that there was a 7 but no 3  :smackedface:

Thank you  :beers:

That's tomorrow's job sorted, strip one class 57 to sort non running.

How did you know I was a Prefect at school?  :D

John P
Check out my layout thread.

Contemporary NW (Wigan Wallgate and North Western)

https://www.ngaugeforum.co.uk/SMFN/index.php?topic=39501.msg476247#msg476247

 

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