Is the Yamaha remote for AV receiver Rxv363 same for US and Australian models? The Remotes are RAV 283 and RAV 284 respectively- can these be used as substitute for each other ?

Sounds like the IR Board has failed. Open it up and see if there are any signs of component damage. Yamaha Service Centres are excellent. Not much online about it.

https://www.google.com/search?q=rx-v373+ir+board

..

To perform a factory reset on a Yamaha RAV 352 remote for use with an RX-V2500 receiver, follow these steps:
1. Turn on the RX-V2500 receiver using its power button or remote control.
2. On the remote, press and hold the "VCR 1" and "ON/STANDBY" buttons simultaneously. Hold both buttons for about five seconds until the remote's indicator light blinks twice.
3. Release the buttons. The remote control should now be reset to its factory default settings.
4. Test the remote by using it to control the RX-V2500 receiver. Make sure the remote is within range and pointed towards the receiver's IR sensor.
If the factory reset doesn't resolve any issues you're experiencing with the remote control, you may need to try replacing the batteries or consider getting a replacement remote from Yamaha or an authorized dealer.
Please note that the steps provided are based on general instructions for Yamaha remotes, and there might be slight variations in the specific procedure for your RAV 352 model. Consulting the user manual for your specific remote or contacting Yamaha customer support can provide you with more accurate and detailed instructions tailored to your device.

RAV290 does not communicate with the yamaha rx-665 av receiver. Why ?
(1)Remote ID does not match with your amp ID. You should download RXV665 service manual to check the remote ID.
(2)remote diode does not work. Use your mobile phone camera to check it
(a)pointing the phone camera to the remote diode.
(b)don’t take any photo.
(c)when remote appear on the phone screen, press any remote button.
(d)If white flashing light is shown, remote diode is OK. Otherwise bad diode or low battery.
(3)receiver sensor diode gets defected.

Rav-212

a couple of subtitutes:

$133 and $55

http://remotes.com/remotes/servlet/rs?a=gmi&smodel=RXV800&brand_pn=YAMAHA_RXV800&mode=large&uuid=A13001399186991

or you could buy a whole RX-V800 WITH a remote for $136 delivered...

http://cgi.ebay.com/Yamaha-RX-V800-5-1-channel-500-Watt-Receiver-/260751483460?pt=Receivers_Tuners&hash=item3cb5ffe244

The remote for your unit is the RAV-238. You can purchase a replacement here:
http://remotes.com/store/yamaha/rav238.html

The model is RAV250 (roiginal) or RAV254 (sub)

Read this first:

http://remotes.com/remotes/servlet/rs?a=Display&contents=help_deadremote&uuid=A12987331024191

Searched eBay, found a couple RAV254's for $35 and $43 ...

"rx v450 remote" check the 'include description' box

or ...

$54
http://remotes.com/remotes/servlet/rs?&o=c&o=c&a=Search&uid=0&m=rx+v450&uuid=A12987330771381

chances are that the yamaha rxv363 will not control the bluray since it was produced before the bluray. as far as the LG codes, you may want to try a Zenith codeset. they are similar.

The RVA350 comes with this model according to the manual.

Hope this helps

It can be 737, but I'm not sure... //David

(I have the RX-V659). Because the Yamaha remote has TWO SEPARATE buttons - power ON and power OFF (standby). This problem can't be fixed. There's a code to choose power ON and another code for power OFF. But one button can't be two buttons. Bad engineering\ design by Yamaha in my opinion