Looking for Universum 8800 Super Stereo service manual

[Tiira]

The Universum 8800 Super Stereo is a very heavy ghettoblaster from the early 1980's made by Quelle in Germany.
After a long hunt, I finally managed to get hold of the device. It’s got a few minor issues, so I’m hoping to track down a service manual for the radio. Any tips on where I might find one?
Thank you n advance!

Tiira from Finland

 

[Superduper]

Try eBay.de

 

[Tiira]

I will, thanks!

 

[Reli]

I have the owners manual, which includes a couple tiny schematics. But I've never seen the service manual.

 

[Tiira]

Thank you for your reply. I still have to keep on looking...