Hi highfigh,
If you go to Yamaha Canadian web site, you can dowload their manuals.
@
http://www.yamaha.ca/av/Manuals.jsp
Most resets in receivers operates the same fashion.
>>> For the appropriate one for your Yamaha RX-V800, skip all these three options just below,
and go directly below my name (Bob), where it says "=====> Got it."
<<<
1. Try this one: Plug your receiver in the AC wall outlet, turn it OFF (Standby), now unplug it from the AC wall outlet, wait about 30 seconds or so, then plug it back in.
2. If it ain't working, try this one: Turn your receiver ON and, while holding down the [VCR1] button, press the [STANDBY/ON] button. "Clear" might appears on the display and your receiver might enter Standby mode.
Hope it does.
3. Or this one: Switc off your receiver using the main power button on the front face. Hold the the Effect button and the Direct button, and turn the main power ON.
*** You can get a Logitech Harmony Universal remote control, that can have all the commands from your original Yamaha remote control.
I highly recommend the Harmony 550. It could easily be found for $40, even $30.
~ I'll do a search for you about that exact reset procedure, and we'll be right back.
Till then, rejoice,
Bob
=====> Got it.
> Be sure your receiver is in Standby Mode.
1. With your receiver in the Standby mode, hold on STRAIGHT (EFFECT) on the front panel and press STANDBY/ON.
* The ADVANCED sETUP menu appears in the front panel display.
2. Rotate Program to move through the menu and select "PRESET".
3. Press STRAIGHT (EFFECT) to select the desired setting.
RESET = To reset your receiver to its factory presets.
CANCEL = To cancel without making any changes.
4. Press STANDBY/ON to confirm your selection.
* If you selected "RESET", your receiver is reset to its factory presets and switches to Standby mode.