Question about Yamaha RX-V520

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Yamaha RX0V520 Looses all settings

When power is removed from my receiver it looses all its settings e.g. radio channels, effects etc. Everything needs to be set up again. There is also a small digit flashing on the front LCD when e.g. radio is on. Any ideas?

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Change the backup capacitor 0,047F 5,5 V on the underside of the front PCB.

Posted on Jan 07, 2009

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I have a Yamaha RX-V2092 with a 7 speaker set up. Purchased new. Everything has worked great until recently. Now the center channel speaker, left front effect speaker & left main speaker short off...


It seems that the main sound processor comes into an error and so seems a fault on the board. Since checking for a component level solution is very tricky as the access is not friendly, what could be done initially is to remove and reset the boards, check for faulty connectors that seems to vibrate and bring in these faults. Check the solde joints of the connector pins on the board. Check and solder the processor IC and the allied circuits. If the fault seems to disappear when the set heats up then you must check using a magnifier.Check the solder on the audio driver outputs of the center, main , front and rear are clean.
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As a pioneer dealer, I am well aware of this problem. Sadly, there is no consumer level fix for this problem. A special capacitive battery is soldered on the board, and will require a professional electronic repair person to fix.

Another solution is to purchase a battery backup (UPS) and plug the receiver into it. In theory, this would allow you to continue using the receiver with no loss of power ever.

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Subject: Backup Memory on AVR/DPR/HK series receivers.
In the event of the complaint: “the receiver is losing its memory (any programmed system settings)
when the unit is turned off, or after the unit is unplugged (briefly*)”:

Check and replace:
Model: AVR7000
Designator: C730
Location: Front PCB
Description: 0.047 Farad 5.5v capacitor
Part number: # P10790-ND or # J3432147324X

I'm having the same problem and this is how far i got so far. I don't kwow how to get and replace this part.

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1 Answer

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Best Regards,

-James

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