I had a similar frustrating problem, the RX V1500 would simply turn
off within a couple of seconds. Unplugged it for a full day, tried
disconnecting all cables & inputs. Nothing made any difference. Just
as I had resigned to write off this AVR with a heavy heart, I came
across this site:
http://www.avsforum.com/t/689793/help-yamaha-rx-v1500-avr-shuts-down-after-on-for-3-seconds
(Wish to deeply thank Daniel Campbell who has discovered this CPR remedy)
The
solution given here has worked spot on for me. Like a new lease of
life, almost a miraculous resurrection !! Do try it before sending your
set for repairs or dumping it, hope it might work for you too.
There is whats called a protection circuit inside this receiver. This is what is supose to happen when the receiver detects a short in one or both of the output stages of the amp. Unless you have a service manual or have the know how to work on solid state receivers, my best advice is to take the unit into an authorized Yamaha repair depot and have them take a look at it, as they can hook up the receiver to a set of load resistors and run the amp to max capacity and see when the amp section of this receiver starts to clip and that will give them an idea of where your problem is. I'm afraid there is no fix that an end user of this receiver can do. Good Luck
Thanks for the poor rating my friend, you will still need to take, or send the unit into repair shop. It needs to be serviced, and unless you have any solid state repair knowledge and know how these amp circuits work, you can not do this repair, as there is also equipment you will need to troubleshoot this receiver. There is no magic wand I'm afraid to fix your problem. And no, dusting is perioticly will not help. Good Luck
Like I said before, These are solid state receivers and you cannot repair this unless you know how the power supply and the protection circuit works. I am sorry but there is no simple fix for this unit, and I have had, many times, a defective unit right out of the box. it does not make a differance if you used the receiver 2 times, or 100 times my friend, there is no time limet on how long these will last. I'm afraid there is no other options unless you take a quicki course in electronics and that would not be feasable. Maybe try contacting the manufacturer and see what they charge for a factory repair. good Luck
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Change your power regulator it is leaky and there are some diodes around the regulator change them also check the caps and some of the resistors some also can be faulty.good luck.
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Snakehead and Techman, I really appreciate your inputs. It is intuitive to me that this unit is defective by design and I should have "bewared" more. Would a thorough dusting or vacuuming do any harm or possibly help? The nearest Yamaha repair depot is 127 miles from here. Thanks
I'm not electronics "savvy". I don't know what a power regulator is nor how to find one. I hoped to discover a simple solution such as a thorough cleaning. The machine is young and not oft used, and in my opinion should not be broke in an expensive machine like this.
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