Uher Sg (560, 561 etc) rewind-forward “magnet” issue

[tedsorvino1]

Hi everyone. New in here. Glad you accepted me.

I’m working on an old Uher sg 560. All maintenance done. Recap etc. Heads, rollers etc all good.
At the moment I’m facing a strange issue. 
These machines are pretty “primitive”. No logic etc. 
The rewind-forward mechanism works fine manually, but apparently it has a variable magnet - coil (prt nr. Uher 01049) attached under the small tension pcb, that makes the lever stick in place. There is also another same one in the front side over the lever (i guess that has to do more with the auto stop mechanism)

The voltage on each pin of the small coil is -13v with ground reference (positive ground) when the lever is activated manually ,
According to the service manual standards 26v between pins is the correct voltage, but between pins i have 0v.

So there is no actually change on the “auto” (lever staying in place) behaviour, regardless of parallel distance of the coil to the lever (according to the manual) I’ve tried.
There is no other locking for the rew-ffw lever so it would be useful to fix it.
If anyone more experienced in these Uhers can share some advice, on that issue it would be fantastic.


Thank you in advance

[tedsorvino1]

Fixed the voltage issue. Now I have 26v on each pin of the coil related to ground. But when the coil is connected the voltage between the 2 pins is 0v and the coil doesn’t act as a magnet. When the coil is not connected the voltage between the 2 pins it goes from 0v gradually higher.
Not experienced at all with the uher rewind system so I really can’t tell if it’s a bad coil. Result rew-ffw only manually.