Hi guys.
I have the same problem as Theo X.
Yamaha RX-V471 died on me and sorry to tell you, it wasn't a power surge.
And even if it would have been one, my whole system is plugged in a APC Back UPS 1300W and it is still going on strong. So my AV was working in the best conditions.
I found the RX-V471 / HTR-4064 Service Manual and started to do some diagnostic.
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It starts when I push INFO, Tone Control and Power button at the same time.
Keep holding the buttons, NO PROTECT appear for half a second then PS2 PRT 1L.
Once I let the buttons go,
A1-1
DSP Margin appears.
I'm still reading the manual and so far the manual doesn't say or give solutions for those messages.
If you have any idea, I'm all ears.
Thanks guys.
UPDATE.
Hi guys.
I did unplugged all speakers and left only the HDMI Out connected to a PC Screen.
Didn't change anything. Thanks anyway.
I saw the piano picture on the screen.
After doing all the diagnostic tests, I sent this email to Yamaha for a new power transformer.
Here is the text :
Hi.
The receiver stopped working one day in September.
Push the power button, MAIN appear and then turn off.
The Service manual talk about updating Firmware but I never found any RXV471-xxxx.bin file anywhere on the internet.
Went to Self-Diagnostic on page 19 of the Service Manual :
Hold TONE CONTROL + INFO + POWER Buttons.
I got the problem NO PROTECT --> A1-1 DSP MARGIN
Scroll all Main and Sub-Menus.
Everything is ok.
The only problem is
On page 23 of Service Manal
P2 Protection History, I can see on the receiver that HISTORY 1st and 2nd direct me to PS2 1
And
on page 27 of the Service Manual
2-3 I get the message PS2 PRT 1L
Which is a Power Supply Fault
I need a price and a delivery date for the 2nd Power Transformer for my receiver:
YAMAHA Natural Sound AV Receiver RX-V471
120VAC 60Hz
270W 320VA
S/N : Y570721TV
On page 3 and 4 of the Service Manual, it is the top picture, which is a U or C model, don’t know yet.
On the back panel, top right, WW59910-3 UC
Here is what I have on page 120-121 of the Service Manual.
Part 15 : YD332 A0 (See pictures below) (Which is not on the list, the list stop at YD331 A00
I will need the Specs Sheet about PinOut (Voltage IN and Voltage OUT of each pin) for a
BANDO
YD332 A0
BD31
BEM1-FF9
FGSC95228
On the base
AYW85.8-57-YM7
I sent an email to BANDO too, it is in Malaysia.
Still waiting for their responses.
If you need it, Yamaha Spare Parts Order form is at :
and
You can order the Service Manual for the RX_V471 at :
partsorderdesk@yamaha.ca
ca.yamaha.com
Hope it will help you.
Thanks
UPDATE #2
No I don't think it could be the APC Surge Protector.
I would think it would just be the Power Supply that just gave up after 10 years.
Didn't get a response from Yamaha or BANDO so far.
I'll keep you posted.