Amadeus Posted June 15, 2014 Posted June 15, 2014 I have a Yamaha AV receiver RX-V757 and it will not power up. The main display is blank and there is no sound of relay engaging or any sound of life at all. So far I have: - disconnected all cables except main AC cable - measured 247V on the input board where the AC input cable is attached - taken fuse F1 off fuse holder and checked it with a multimeter and is ok - measured voltage at the AC outlet and there is no power at all Any suggestions? I couldn't find a diagram online. I'm pretty confident in trying DIY repair if I find out what to do. I've been quoted $800 for a repair at the hi-fi shop where I bought it, when a new comparable unit would cost $1000. They obviously are trying to sell me a new unit. :mad: Does anyone know any repairer that can be trusted in Melbourne?
TMM Posted June 18, 2014 Posted June 18, 2014 I know it's not the exact same model, but it is so visually similar that i wonder if they share the same boards and the same problem: 2
Amadeus Posted June 18, 2014 Author Posted June 18, 2014 It looks the same as my unit, I'll definitely try to replace the cap. Fun video too! Thank you
progladyte Posted June 20, 2014 Posted June 20, 2014 Changed the cap, working! Thanks TMM Great outcome - Did you tell the shop owner?
TMM Posted June 23, 2014 Posted June 23, 2014 Changed the cap, working! Thanks TMM Awesome, glad i could help
nedrum Posted July 10, 2014 Posted July 10, 2014 New career?..."Will fix broken Yamaha amps for $800 $750"
DarthPez Posted August 12, 2014 Posted August 12, 2014 TMM, thanks! I had no power to my Yamaha RX-V757, exactly the same as the symptoms Amadeus was having here, on Saturday night. So no big sound for home movie night :-( Through the power of google and this forum, I found your video later that night. A trip to Jaycar Electronics for a $0.55 630V 22nF capacitor, and 10 minutes with a soldering iron and a screwdriver later, and come Sunday lunch the receiver was back in business. I tested it out with a couple of CDs, and then Star Wars Ep 2 cranked up for the kids (OK, and for me) - good as new! Thanks again. 1
Roger Lee Posted March 1, 2020 Posted March 1, 2020 Thanks for posting all this guys, had the same problem here in spain, cap measured 2267pf instead of 22nf. We were away for the weekend, i think i left the amp on, many thunderstorms later, the receiver was u/s on our return.
.thumb.jpeg.a4b7d7f34dec3344afad6af9c8fd6c9d.jpeg)
Recommended Posts