Question about Audio Players & Recorders
Hi, my yamaha receiver power on just a split second then no power. I made sure the impedence selector switch was set exactly and tried again. no luck .. any ideas?
Disconnect all your speakers from the receiver. Turn the power on, and see if it stays on. If the unit shuts off with all the speakers disconnected, then you most likely have a faulty unit, and it will need to be repaired or replaced.
If the unit stays on with all the speakers disconnected, then you most likely have a bad speaker or a bad connection with the speaker wire.
Starting with one speaker, hook it up, and turn the unit on, and again see if the unit stays on, or if it shuts off. Do this until the unit shuts off when you connect a speaker.
Then disconnect all the other speakers, and leave the suspect speaker attached. Again, try to power up the unit. If it fails with that speaker attached, but works when it is not attached, then that speaker is your problem.
Posted on Dec 09, 2008
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Posted on Jan 02, 2017
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Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Eure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
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