Receiver loses memory after power failure? - Canadian TV, Computing and Home Theatre Forums

danomac · 2012-06-24, 04:59 PM

Hi all,

I recently sold my old receiver to someone who was very unhappy with the sound of his new TV. His son gave him some proper bookshelf speakers and we found rear speakers and a center channel on craigslist. Off the top of my head this is a Pioneer V704S.

He's very happy with the sound now, he says he can annoy the neighbours now if he wants.

However, the last two power failures the receiver lost its memory. Normally this isn't a very big deal, but this unit was one of the early models that allowed you to map optical and coax to any input you choose, and therein lies the problem. It resets and the poor guy is lost with no sound for his TV and BD player. He's not very technically inclined and is completely lost when this happens.

Now, the memory on that unit had been working fine. In fact, it still remembered my old settings that I used in my living room from 2 years prior. (It had been sitting for a while.) This amp is working perfectly in every other way.

Can anyone think of why it would stop remembering settings all of a sudden? Power failures where he lives (rural) are common in winter. Is there a battery in it even? I guess that could explain it if there was...

57 · 2012-06-24, 05:48 PM

There may not be a battery, but the ROM could be somehow compromized, or perhaps there is a capacitor that is not working properly any more - I've encountered this on several clock radios that forgot everything. He could plug it into a UPS and make sure he shuts the AVR off as soon as there is a power failure so that the UPS can sustain the memory during the power failure.

danomac · 2012-06-24, 06:34 PM

I thought about the battery backup/UPS. The problem is he can go 24h+ with no power. Once it was almost three days before his power came back.

It could be a stopgap measure for now. And I'd have to make sure he understands that he needs to have the amp in standby if the power goes out while he's watching TV.

Jake · 2012-06-24, 07:50 PM

Not a solution but a workaround. I would find out what the audio is defaulting to during a reset and set everything up that way. So if coax1 is defaulting to DVD and optical1 is defaulting to AUX then hook up the devices to those inputs. I assume the video is assignable too. In which case make sure you pair the correct audio with the video.

2012-06-24, 04:59 PM	#1
danomac Join Date: Jun 2010 Location: Abbotsford, BC Posts: 115	Receiver loses memory after power failure? Hi all, I recently sold my old receiver to someone who was very unhappy with the sound of his new TV. His son gave him some proper bookshelf speakers and we found rear speakers and a center channel on craigslist. Off the top of my head this is a Pioneer V704S. He's very happy with the sound now, he says he can annoy the neighbours now if he wants. However, the last two power failures the receiver lost its memory. Normally this isn't a very big deal, but this unit was one of the early models that allowed you to map optical and coax to any input you choose, and therein lies the problem. It resets and the poor guy is lost with no sound for his TV and BD player. He's not very technically inclined and is completely lost when this happens. Now, the memory on that unit had been working fine. In fact, it still remembered my old settings that I used in my living room from 2 years prior. (It had been sitting for a while.) This amp is working perfectly in every other way. Can anyone think of why it would stop remembering settings all of a sudden? Power failures where he lives (rural) are common in winter. Is there a battery in it even? I guess that could explain it if there was...

2012-06-24, 05:48 PM	#2
57 Moderator Join Date: May 2002 Location: Toronto, Rogers, 8300HD, eHDD, Panasonic TCP65S1, Denon AVR4310Ci; 8300HD, eHDD & Sony KDL40W3000 Posts: 50,296	There may not be a battery, but the ROM could be somehow compromized, or perhaps there is a capacitor that is not working properly any more - I've encountered this on several clock radios that forgot everything. He could plug it into a UPS and make sure he shuts the AVR off as soon as there is a power failure so that the UPS can sustain the memory during the power failure. __________________ 57's Home Theatre (Latest equipment & photos) 57's Optimization Services (Home Theatre Optimization)

2012-06-24, 07:50 PM	#4
Jake Moderator Join Date: Apr 2003 Location: Gatineau and Ottawa Posts: 10,171	Not a solution but a workaround. I would find out what the audio is defaulting to during a reset and set everything up that way. So if coax1 is defaulting to DVD and optical1 is defaulting to AUX then hook up the devices to those inputs. I assume the video is assignable too. In which case make sure you pair the correct audio with the video. __________________ Tip: See an offending post? Don't reply, report it by clicking on the 'Report Post' icon.

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2012-06-24, 06:34 PM	#3
danomac Join Date: Jun 2010 Location: Abbotsford, BC Posts: 115	I thought about the battery backup/UPS. The problem is he can go 24h+ with no power. Once it was almost three days before his power came back. It could be a stopgap measure for now. And I'd have to make sure he understands that he needs to have the amp in standby if the power goes out while he's watching TV.