ANT/Telefunken W689 panner - Telefunken SLBE1 wanted repair

[giampi]

Hello
I have 2 modules ant w689 for an XY-MS-MS XY stereo operation ... I did a recap of them but one channel does not work .... I only have a single image ...
maybe there are internal links to do?
someone can do a repair on them?

I have a SLBE1 control monitors .... does not the power ...
only works in passive mode (volume attenuation and balance control)
someone can do a repair on them?

thank you