Need to clean the RF of my GSN

[rvl_fr]

Hello all,
I'm pretty new with RF camera, i've bidded for a GSN on ebay. THis camera is like new but the RF need to be cleaned. Somebody know how to dismount the top ???
Many thanks from Frenchy

 

[Madrigal]

The Yashica Guy has some nifty tips on his site:

http://yashica-guy.com/document/repair.html

Haven't attempted this myself, yet. I just received a Lynx 5000 whose RF could use a cleaning.