pioneer receiver power cycle on power surge

dgillyerek · Sep 29, 2014

Hello - I have a fairly standard home theater setup with a weird occurrence. Whenever there is a power hungry appliance anywhere in my house (window a/c, dryer, microwave) requests power my A/V receiver blinks off for about 2 seconds. I have a RCN cable box, PS3 (mostly off), HTPC (mostly off), chromecast and a pioneer sc 1223 k receiver all hooked up through HDMI. When the surge happens the receiver doesn't shut off but its rather like it drops the HDMI signal for a brief second.
I made sure all the wires are snug and purchased new surge protectors. I use to have a yamaha receiver hooked up in the pioneers place that recently died and I'm afraid this strange behavior might be the cause. What should I look into? There doesn't seem to be any power drain in my house other wise (dimming of the lights etc..) We had an electrician come by and he didn't find anything he thought out of the ordinary and suggested we upgrade to better surge protectors (which we did).

Should I replace my HDMI cables? Cable box? Need to hire a different electrician? Any possible causes? or suggestions would be greatly appreciated.

americanaudiophile · Sep 30, 2014

It sounds like when the high power draw device kicks on it drops the AC voltage to the receiver so much that goes into protection. It might help to try a UPS rather than just a surge suppressor. Connect the receiver as well as the cable box and any other devices that you use.

westom · Oct 1, 2014

A surge protector says on its box that it ignores any 120 VAC voltage that is below 330 volts. How often is your 120 VAC rising to well above 330 volts? Never? Then why would anyone recommend a surge protector?

If a major appliance is causing a voltage drop, then what did anyone here expect that surge protector to do?

Same applies to a UPS. What does anyone expect it to do? Is a surge protector or UPS a magic solution to all anomalies?

If major appliances cause a significant voltage drop, then incandescent bulbs were dimming to 50% intensity or less. If bulbs do not dim that much, then voltage is fine. An example of how to define the anomaly long before recommending a solution.

If a major appliance is causing voltage to drop that low, then a serious human safety issue may exist in household wiring. But again, that is only speculation since hard facts (ie how much a bulb is dimming) remains unstated.

Apparently noise is causing a digital signal to be cut off. I can add maybe another ten speculative reasons for that symptom. Better information is necessary before anyone can recommend a solution. For example, what signals between components are digital? What are analog? How are all components interconnecdted - including each AC power wire? Does audio cut off when using every possible input source? Or only when receiving a digital radio signal?

A UPS recommended without saying why it works is a first indication of wild speculatoin masking as an informed recommendation. Often because knowledge on a UPS or surge protector only comes from advertising and hearsay. Information is needed before anyone can make a responsible recommendation.

americanaudiophile · Oct 2, 2014

The correct device to use is a voltage regulator that maintains 120v but these are quite expensive and can be noisy so a UPS is a common device that might work. It certainly can be used to power the receiver and box unplugged from the ac outlet so that you can tell if that is the problem.
Since multiple devices seem to cause the problem it is unlikely that they are all producing noise but it is not impossible. It's possible that the cable box is having a problem and not the receiver. For that you should connect that directly to the TV and see if the problem occurs.

westom · Oct 3, 2014

americanaudiophile :

Best regulator is already inside each electronic device. How does it work? First, 120 VAC is filtered. Then converted to high voltage DC (exceeding 300 volts) and filtered. Then converted to high voltage radio frequency spikes - making power the 'dirtiest'. More filtering. Then converted to low voltage, rock solid and stable DC voltages. And more filtering. How good is a regulator inside electronic appliances? So good as to convert incoming 'clean' or 'dirty' AC electricity into the 'dirtiest'. And then 'cleans' and stabilizes that 'dirtiest' power into best DC voltages for semiconductors.

Best regulators are already inside electronics. So superior that an ideal voltage for electronics is even when incandescent bulbs dim to 50% intensity. Why spend money on another regulator or UPS that is only inferior to regulation inside electronics? Why 'clean' AC power into electronics when electronics only convert it to 'dirtiest' electricity? And then cleans that.

OP should define the anomaly before a productive recommendation is possible.

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