Yamaha RX-A740 – Power issues
The Yamaha RX-A740 was my first real electrical challenge that wasn’t already published online. It took the longest to fix, and I ended up buying 2 additional Yamaha receivers for parts. Purchase price was $30. Technically: +$10 +$20 for the additional receivers but more on that later… This receiver was hit and miss – it could work for an unknown amount of time or not work at all. To diagnose it, I made sure it was off and drained of power, reconnect power cable, hold Tone Control and Info, then press power/main zone. This displayed “PS3 PRT:131 L”, then turned off. After consulting the service manual (very easy to find). Sometimes I’d get 5-10 minutes before it died. I ran heat test to see if it made it worse. It, infact did not, and when… Read More »Yamaha RX-A740 – Power issues