These Internet page links work, check your computer browser's (Internet Explorer, Chrome, etc.) operation.
The download is FTP, and the file is compressed (ZIP), due to size.http://home.comcast.net/~aa4df02/download.html
Here's a scan of the Kenwood TR-7800 and TR-7850 Service Manuals.
It is (about 16MB in size): TR-7800/7850 Service Manualhttp://ftp://guest:firstname.lastname@example.org/tr7800_7850_svc.zip
This was created here in our shop, and we respectfully request that it not be taken to eBay and sold to people who don't know any better than to pay out money for free internet download material.The original manual was provided by the generosity of K7LZJ. Steve (K7LZJ) is in need of a service manual with schematics for the HP 8565A. If you can help him, please let us know or get with him via QRZ.