I've got a Yamaha TX-802 suffering from a distortion problem which I've been told Yamaha acknowledged and issued a "Service news" bulletin for.
The only "Service news" document I've come across from Yamaha is one for the TX-81Z and DX-7 II, but nothing for the TX-802. They were both issued by Yamaha's "Electronic products service division".
No web search or asking around has turned anything up.
Does anyone here have access to this document or know ehere to get hold of it?