I have AVR430 in storage, faulty temperature sensors for protection of the power stages (it turns off right after start). This fault was well known, its repair is even described in the service manual. I had it even fixed when the device was still under warranty. After a few years the fault came back. I could probably fix it myself, but never found the time, the disassembly would take hours...
It is a 7ch device (all power stages identical), I rewired it for biamping my front towers in my 5ch setup. The sound was nice, detailed, but after the AVR fault I use only the fronts with Kenwood amp KA7010 from 1988 (37 years) and the sound is somewhere else - much more power, more control of the woofers, much better for movies (even with no surround), no need for a SW.