I just found out that my z-100 brick's accessory port is wired backwards. I never used the acc terminals till just now. Any fixes ?? Has anyone returned these back to MTH well after the warranty period?
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Do you mean the Z-1000? Do you mean that the accessory port is out of phase with _____? What does "backwards" mean?
How did you determine that?
John
There were some Z-1000 transformers with incorrect phasing, I believe there's a service bulletin on that.
@gunrunnerjohn posted:There were some Z-1000 transformers with incorrect phasing, I believe there's a service bulletin on that.
On the main only I thought? I had to reverse the wiring to phase mine with another transformer, but I didn't do that with the auxiliary. I'll look for that service bulletin.
John
Correct, but that phasing issue could be mistaken for the accessory connection being reversed.
when i wired an accessory to those terminals and started the locos the breaker blew
Geez, I have a Z-1000. I wonder if mine is backwards too.
Can't we trust anybody, anywhere, to build something right? Especially a $100 electronic device?
Mannyrock
There was a small run of bricks that were wired wrong. If you touch the outside of the barrel plug to the inside accessory terminal and you get a spark (and the breaker may trip) it’s wired wrong.
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@Jon G posted:There was a small run of bricks that were wired wrong.
Hi Jon,
Do you know when that was?
John
@Craftech posted:Hi Jon,
Do you know when that was?
John
No, sorry. Don’t think their is a date code on the bricks.
inside accessory terminal?
Not sure what that is? Do you mean you have to open it? What do you mean by inside?
Thanks,
John
@Craftech posted:inside accessory terminal?
Not sure what that is? Do you mean you have to open it? What do you mean by inside?
Thanks,
John
The one nearest the cord. In other words there are 2 screw terminals near the edge of the transformer, one is the outside since nearest the outside, one is nearest the inside since it's closer than the outside. The "Inside" terminal is labeled "COM" in this photo.
Bottom line, the accessory 14V "COM" inside terminal should be in fact electrically common to the outside sleeve of the tip coaxial terminal.
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@Vernon Barry posted:Bottom line, the accessory 14V "COM" inside terminal could be in fact electrically common to the outside sleeve of the tip coaxial terminal.
Thanks Vernon,
John
