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Pictures attached to make sense out of the words.

AS you do an upgrade of a steam locomotive, watch out for the pin extensions on the Engine side of the harness. In manufacture, some kits have the pins extending upward too far. If the wires on the harness connector are then compressed when putting the cab on after the upgrade is complete a SHORT can occur blowing out the PS2 board(s).

This just happened to me on a KLINE Mikado conversion. Space under engineer area was too tight and as I tightened down the cab screws as the final step, I forced the roller wire into the pin below. Never thought about it. I checked two other kits and neither have this extended pin manufacturing defect.

In the pictures, you can see that I ground the pins down and then used on of my favorite insulating tools, DUCT SEAL, to protect wires and pins further.

Boards will now go to George to see if he can salvage them.

 

 

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Last edited by Hugh Laubis
Original Post

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I noticed this on one of my conversions and laid 2 layers of electrical tape inside the frame, after I had Dremeled out as much as possible.  I also had to cut some of the PCB to get it to fit.  Guess I was lucky nothing shorted.

 

I'm eventually going to do my Weaver/MTH 4-6-0 hybrid and honestly the tail of the chassis where the board sits looks like it's too small, I may have to add something for the board to mount onto.

 

Hope George can save it Hugh!  (If this BIG snow we're getting down here doesn't get in the way, right G?)

It's always a good idea to inspect this area closely.  I also try to make sure there is room above, even to the point of some Dremel work to create more space if possible.  I do trim the pins flush as part of my installation.

 

Some locomotives seem to leave very little room for the connector.  On a number of them I've had to relocate the two diodes up into the wiring as they wouldn't fit, even for some PS/1 conversions.

 

Originally Posted by Hugh Laubis:
Originally Posted by GGG:

Hugh, I will give it my best, but if Red AC hit Gray 5VDC, we may have a problem in Houston.  G

George,

I don't know what that warning means, but that was my guess when I looked at it first time.


AC on the 5VDC tends to damage the processors and microchips.  They don't like AC.

 

Hence the pun " Houston we have a problem" from the Apollo missions.  G

Originally Posted by bruce benzie:

Hugh,

 

Where do you purchase 'Duct Seal'?

 

I use a minimum of 2 layers of electrical tape.

 

Bruce

Bruce, it is used by electricians to seal openings around anything they do where there is not a tight fit, like a pipe through a concrete wall.

Home Depot will have it in the electrical and plumbing departments. It comes in a 'brick' and you work it like silly putty!

Originally Posted by GGG:
Originally Posted by Hugh Laubis:
Originally Posted by GGG:

Hugh, I will give it my best, but if Red AC hit Gray 5VDC, we may have a problem in Houston.  G

George,

I don't know what that warning means, but that was my guess when I looked at it first time.


AC on the 5VDC tends to damage the processors and microchips.  They don't like AC.

 

Hence the pun " Houston we have a problem" from the Apollo missions.  G

Oh OH!

In the shipyard they called it something else...Monkey $#!%
 
If you got it on you it was hard stuff to get off.
 
 
Originally Posted by Hugh Laubis:
Originally Posted by bruce benzie:

Where do you purchase 'Duct Seal'?

Bruce, it is used by electricians to seal openings around anything they do where there is not a tight fit, like a pipe through a concrete wall.

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