We all know, that the switches of the Marantz receivers often cause problems. In most cases, it is sufficient to spray de-oxit in there as often recommended here on AK. But the spray will go all over the board, too. I don't like that so much... ;-) Sometimes, I also had really dirty switches with bad contacts. The switch even did not MOVE properly. So I thought it is better to remove the switch. You can easily clean all contacts then. Here is how I do. You do not even need access from the inside of the receiver. (but it`s of big advantage though....) One word on the beginning: please use this small tutorial at your own risk! If your switches are working well, there is probably no need to do this, of course. It's on you to decide! Make yourself familiar with how the switch works before you start! This is just, how I do it. If you don't feel to have very skilled fingers, better don't do it. Thank you. Here we go: First remove the front of course and put the receiver upside down. Here it is a 2245. VERY IMPORTANT: the switch has to be in the OFF-position: Pull the little spring towards yourself and hold it in that position until you have access to the little metall piece you see on the top. Now, lift up that piece carefully and pull the switch out. It's a good idea to have a look inside too, to see how it works. If you know, and with a little bit of practice, it's possible to do it from outside only... Take care of the little springs inside. There is a spring behind every contact on the stick. They easily get lost and tend to fly through the whole working room! WARNING AGAIN!!! EDIT: As of today (January 2011) I receive nearly every second week a message from people who lost at least one of these little springs! I have not many left and if you loose this spring, I cannot help you anymore with spare part springs! So, be careful! And again: If you do not feel to disassemble the switch, don't do it. Thank you for your understanding! Here I added a photo, of what you can expect: Now you have acess to the contacts for cleaning. Don't forget to clean the contacts inside the unit, too. These are usually worse, than the one on the stick. Use a cotton swab, or whatever you like. :thmbsp: Reassemble vice versa: Done! If you want, you can put a little bit of grease on the moving elements. (Where the metall piece is) Here another switch: Some switches have a different mechanism, they look like this. I havent figured out yet, how to open them. And there might be others, I dont know. :sigh: Thanks for watching and good luck.