hello,
does any user of this forum offer or can suggest someone to make reparation service on pioneer laserdisc player?
thanks

I remember once back there was mentioned someone in Switzerland servicing players. Use the search function and you might get the info you are looking for.

found this repair shop in Germany, shop name is Doc for amps
does anyone know if they are competent for LD-repairs?
they mention they repair LD players

http://www.docforamps.de/

Thats a risk that may not be worth it.
Amps and tube amps are totally different creatures, I can even fix some mid difficulty stuff on home electronics but when it comes to LD
only very minor stuff.