Question about Pioneer VSX-D509S Receiver
My Pioneer VSX-D509S shuts down with "overload" flashing away.
I have changed the speaker cable as the old ox-free cable was old and replaced with new ox-free cable. My JBL 150W speakers(made in the USA...not China) are fine but my 100W Wharfdales(made in the UK) the left one has blown. I replaced with a new set and the left one has gone again. If I use just the JBL's they work fine but still it overloads at under 40db, over 40db works okay. I have only used in surround mode once many years ago as I found it very hard to set up and still do, remote is so big and hit the set up only works when it wants...you sit press set up again and again. I had Kenwood before and worked with no problems.
I only got Pioneer because my new DVD player(Pioneer DV-355) was black and the Kenwood was silver...lol, like to have all the same colour.
Hi Glen. The thing with these new units is that they are so fussy when it comes to frequency range on the speakers. The frequency has to be within the range that the amplifier specifies, or you'll have problems. I suggest that you check your manual to see what the required frequency shuold be and take it from there. I have one myself and love Pioneer
Posted on Aug 03, 2009
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Posted on Jan 02, 2017
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Jan 03, 2013 | Pioneer VSX-D509S Receiver
May 04, 2011 | Pioneer VSX-D509S Receiver
A precise make and model might yield more-specific answer.
Generally speaking, an amp protects itself from heat, shorts and overloads.
Overloads can be from excessive periods of high output 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. Ensure 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 hands-on tech.
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