Tales from the Crypt continues ...
I just received a DC504 Counter plug in. The other two plug ins I have are in the best of the two TM500 power units (the one I repaired with the new connector). So, to test the DC504 I naturally plugged it into the unit with the other two operating plug-ins to test it. I did so and turned the power on, and the other two plug-ins came on - but the DC504 did not.
![Shocked :o](https://www.eevblog.com/forum/Smileys/default/shocked.gif)
I tried all the slots and it did not work in any of them, but the other plug-ins do work in any slot one or both at the same time. So I figured the guy sent me a bum DC504. But just for fun I took the DC504 over to the second TM500 I got for parts (but is basically functioning although it's in the process of getting cleaned up). The DC504
did come on when I tried it in that TM500,
in any slot. Also, the other plug-ins I have all work OK in
both TM500s in any slot.
![WTF? :wtf:](https://www.eevblog.com/forum/Smileys/default/wtf2.gif)
I'm going to stop for a while and think about this one, any ideas are gratefully accepted at any time as always ...
![Popcorn :popcorn:](https://www.eevblog.com/forum/Smileys/default/EatingPopcorn.jpg)