Question about Pioneer VSX-1015 Receiver

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When turned on amp shuts down and displays power off. what may be the cause?

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You have a short in your unit somewhere which is triggering the fault circuit. It could be almost anywhere but more than likely it is an output driver transistor. If they all check OK I would troubleshoot the power supply. Do you get any fault indications on the display? Let me know and I'll see if I can narrow down the search.

hardrocko

Posted on Feb 05, 2010

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Overload is displayed when the amp draw is excessive, and can be caused by different faults.
when Overload is detected, the protection circuit will shut down the unit to prevent further damage.

The first thing to try is hard reset. Shut down the unit for about one hour to drain power completely.
This can fix minor problems that can cause overload, for example electrostatic charge accumulation on internal capacitors.

If that does not fix the problem, then you must find the fault.

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Another test can be done by unplugging all speakers, and reconnecting and testing them one at a time, at a very low volume.

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Calibration: low volume, power of all channels is decreased I have the following setup: AV Receiver: Pioneer VSX-1015 Front: 2 x Infinity Alpha 40 Center: 1 x Infinity Alpha Center Surround: 2 x Infinity Alpha 30 Surround back: 2 x Infinity Alpha 20 Subwoofer: 1 x Harman Kardon HKTS200SUB Receiver is new, speakers are used but in good condition, subwoofer is new. ---------- I followed the calibration proces with the microphone. Sound: excelent quality of sound. Never heard anything like this. Good bass, pure and lifelike sounds. Plays loud enough to bother the neighbours. Much bass from the speakers while subwoofer only produces a little bit of ultralow, feelable but not hearable vibrations. ----------- So far so good. Although the sound volume is loud enough for me, it really doesn't reach te output power as pioneer subscribes. In order to play loud I have to turn the volume to almost max. Compared to an old sony receiver (5 x 100 watt rms at 8 ohms 0.07%), the outputted power seems to be much lower. I reach te same (feeling of) power when I turn the pioneer to 80% volume where the old sony reaches that feeling yet at 20% volume. ----------- I noticed that the calibration process decreased the output level of all speakers. With the subwoofer on max (button on the subwoofer itself), I get the following levels: front: -8.0 db / -9.0 db center: -5.5 db surround: -8.5 / -9.0 db surround back: -7.5 db / -7.0 db subwoofer: -10.0 db (MAX decrement!!) All speakers are auto rated as LARGE as they all can deliver good bass. The equaliser has decreased the low frequenties of all speakers and increased the high frequenties. ---------- I tried to manualy increase the output level of the channels. Outputted power increases a lot but doesn't much good for sound quality. I also tried the calibration proces with the sub at half power. Now the sub level is only decreased by 2.5 db and allother speakers are decreased with 2 db less, so a little bit less decrement but stil decreased. ---------- question I have read that increasing the power times 2, puts an extra 3 db to the sound pressure. Watching the heavily decreased db levels on each channel, sounds to me that the receiver works at relatively low power. 7 x 35 watt or whatever... ? Can it be that the subwoofer is too large for this system as it is decremented with the max 10 db? That the system cannot decrease the subwoofer any further so it is going to decrease the speakers? But if that is the case, wouldn't it be more logic that the speakers are incremented and the sub is decremented in level? What about the sound quality? Can it be that the pioneer receiver also measures distortion of the sound? The room where the speakers are in is a small room (20 square meter). Can it be that the receiver decrements all levels in order to reach the highest sound quality? --------- The reason I want to know is because I want to understand the calibration. I am fully satisfied by the sound quality but knowing there might be more in it, is not a good feeling ;-) Thanks a lot!!

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