Intellibrite 5G 120v in-light transformer testing

[Gudhjem]

Hoping someone can help me confirm my light testing, which I think is indicating a bad transformer.
My Pentair Intellibrite 5G stopped working after 7 years (from what I've been reading here the past couple of days, that's better than par). It's the 120v version that has the step down transformer embedded in epoxy at the light.

I have 120v at the junction box.
When I connect my multimeter to the 2 leads that go from the epoxy block to the light, they read zero.
If I connect to either lead and to ground (there is a wire coming from the epoxy block and connecting to the light housing) I get about 25vac.

My understanding is I should be getting 11-14vac at the leads (that's what I found on threads here -- I could find nothing in Pentair's documentation or site)

Is my transformer bad?

If it is, that means the new light engine option wont work. Even if it is an option, I may go with the Amerilite as a replacement, and plug in an LED bulb. these Intellibrites seem like a bunch of engineering for nothing.

Appreciate any of you gurus confirming my analysis of the transformer, thanks.

--Steve

 

[KenKasza]

Steve, Sorry no one got back to you regrading your pool light. I have the same lights.
It sounds like you have a bad transforming in the light housing. You should get around 14VAC at those two lead from the transformer. I get 14.3VAC on mine.
The "lead to gnd" reading is caused by not having a return path through the secondary winding of the transformer. Disregard it.

Looks like you will need a replacement light. Might be a good time to look at upgrading to 12VAC system. If so, recommend changing all lights to 12VAC. Not just one.

 

[Gudhjem]

Thanks for the reply. I went with the Amerilite and an LED bulb. It's working well.