Tandberg TCD 310 Dolby not working on one channel.

Hey all! I have a Tandberg TCD 310 that I've been renovating gradually. Upon what I thought was completion, I noticed that Dolby only works on one channel. When I switch position of the boards the problem follows with it, so there's where the fault lies. All the electrolytic capacitors and some tantalums (in the signal path) has been recap'd. I've also replaced all transistors on the faulty board without any luck. Anyone has an idea where to look next?

Skärmavbild 2022-01-14 kl. 13.45.06.png
 
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