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(Topic ID: 145470)

Power Cord Puzzle


By MrWizzo

4 years ago



Topic Stats

  • 8 posts
  • 4 Pinsiders participating
  • Latest reply 4 years ago by vid1900
  • No one calls this topic a favorite

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There have been 3 images uploaded to this topic. (View topic image gallery).

sing_along_transformer.jpg
IMG_20151129_114000883.jpg
IMG_20151129_201141056.jpg

#1 4 years ago

Got a Sing Along recently and realized the power cord wasn't grounded to the transformer.

Went to pinrepair to read up on switching to a grounded cord.

Installed it as I understood the directions and picture:

-attached green ground wire to base of transformer;

-soldered the ribbed wire (neutral/white) to the bottom tab of the transformer with white wires;

-connected the smooth wire (hot/black) into the power switch, which then connects to the fuse.

// Error: Image 479611 not found //

Nothing happens when the game is turned on.

Here is how it was wire originally without the ground. I could find no reference to why it was wired as it was although aside from the game shocking me from the side rails when I touched another game, it worked.

// Error: Image 479616 not found //

What is the correct way to wire the power cord with a ground?

Thanks,

Dan

#2 4 years ago

IMG_20151129_201141056.jpgIMG_20151129_114000883.jpg

#4 4 years ago

Thanks Lloyd.

#5 4 years ago

After the fuse, is the hot wire still running to the transformer?

I can't see it in the picture.

#6 4 years ago

Vid,

Thanks for the help and walking me through things.

Here is a pic of the finished wiring:
sing along transformer.jpg

Game tested at 121 volts with DMD on the fuse and the transformer ground. No more shock when touching bar or rails and touching another game.

The wire you pointed out was missing, fuse to red wired tab on transformer seems missing in the pic on pinrepair as well.

http://www.pinrepair.com/em/index3.htm#shock

The difference in the wiring before the repair and after essentially is the following:

BEFORE

-neutral wire from power cord connected to fuse;

-switch wiring ultimately connected to bottom transformer tab with white wires;

VERSUS

AFTER

-neutral wire from power cord connected to bottom transformer tab with white wires;

-switch wiring ultimately connected to fuse.

Both versions connect one side of the fuse to the tranny tab with red wires.

Makes me wonder if the lack of the grounded power cord or the previous wiring configuration caused the shock.

Any thoughts?

Dan

Dan

#7 4 years ago
Quoted from MrWizzo:

Makes me wonder if the lack of the grounded power cord or the previous wiring configuration caused the shock.
Any thoughts?
Dan
Dan

lack of a ground does cause a shock, but a proper ground prevents one.

#8 4 years ago
Quoted from MrWizzo:

Makes me wonder if the lack of the grounded power cord or the previous wiring configuration caused the shock.

Any thoughts?

From the pic it looks like the fuse and switch were on the Neutral side, so it was just wired ass backwards.

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