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Yamaha Receiver RX-V670

I love my receiver and want to keep it going for many more years. Everything works great except for the LED orange display. Black display area shows nothing. Power lights above buttons work and all sound is good. Kind of hard to operate without any display though. Is this any easy fix? Thanks, RedSonja

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  • northcoast Nov 12, 2007

    I have exactly the same problem and no knowledge of a possible solution beyond what was indicated in the the response to your posting.

  • bsmt dweller May 04, 2008

    yamaha rx-v850 no display due to bulb being blown. There is a lcd display, which is working fine, the "backlight" is just blown. The backlight is glass 1/4" long and an 1/8" in diameter, with a red and a white wire comming out one end. Wires are 6" long and end in a plug. Very easy to replace. Other forums are saying its a 14v bulb. I'm trying to find... Will call Yamaha tomorrow. Unplug. Take out 4 side screws, and 2 top back screws, cover comes off. The bulb is centered in the middle of the display, covered with a black boot. Pull the boot off, pull the orange gromet out. The bulb is inside the gromet. The plug on the circuit board is in a small socket, just pry it out as easily as possible while pulling on wires.

  • Anonymous Dec 29, 2008

    I have a RX V670 Both the back light and the board are out. Where can yu get the and what will they cost. I have had both out and the just jlug in to a connector so easy that way. I've tested for power and each power lead has 13 or 14 volts.



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Parts list and exploded diagram of yamaha rx-v850 found free here:

Enjoy. They can get the bulbs for $1.40...
Bsmt Dweller

Posted on May 05, 2008

  • bsmt dweller May 05, 2008

    The bulb part number for the rx-v850 is:



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My RX-V870 had a burned out display bulb. The display is backlit orange, not fluorescent blue like many newer displays. Yamaha customer service said the original bulbs are 14.5V and 115mA, and no longer available. The closest I could find, at 14V and 80mA, was a "grain of wheat" Philmore 495 bulb at Frys dot com, item #2764833 for $2.19. The package says DC, which wasn't disclosed in the online listing, but my new bulb has worked fine for more than a week, so either (a) the bulb works on DC and AC, or (b) the receiver provides DC current to this little bulb (doubtful, but I'm no electronics expert). The only slight problem I ran into is that the new bulb is slightly fatter than the original, maybe 5mm vs. the original 4.5mm, but it still fits (snugly) into the opening behind the display window. Radio Shack sells a similar bulb #272-1141 at 12V and 25mA, about 5mm diameter, but the Fry's bulbs are a closer match to the original milliamperage, so that's what I went with. Just remove a few screws and lift off the cover. Gently pull off the small black rubber boot behind the display window (with small red and white wires coming out of it), then wiggle out the smaller orange boot with the bulb inside, and remove the white plastic plug from the circuit board. You'll need to clip the wires and splice (or solder and shrink tube) the wires from the new bulb onto the old wires.

Posted on Oct 23, 2014

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I had the same problem although mine was my fault...I dropped my unit. As with yours, everything else works fine except the display. I was told by a company called Herman Electronics ( the part number I need for my RX-V670 is YAMVJ805700 and it costs $47.80. When I questioned the cost as it seemed pretty high for a bulb, I was told the bulb is not sold separately; you have to buy and replace the entire display. However, I have also been told more model train hobby stores carry these types of bulbs. You simply need to make sure the bulb size is right and that you know the correct voltage. Does anyone know for sure the voltage that goes to the bulb?

The part number for the LCD display is YAMVJ805700 cost $47.80 in stock (1).

If you wish to place an order you may contact our customer care line @1800-938-4376 or visit our website

Posted on Sep 19, 2010

  • Scrollsaw Feb 26, 2011

    just repaired my rx-v1050 it was the bulb...picked up a miniature lamp from radio shack (2721411a) 12v 25mA and disconnected the old and resoldered the new one and it fixed the receiver


I bought a replacement light bulb. "Grain of wheat" size bulb to fix problem. The 850 is not flourescent.

Posted on Feb 10, 2008

  • robertreedtx Nov 10, 2010

    where did you get the bulb that fixed the lighting problem wit your Yamaha RX-V850? I have searched high and low and can't find one that will work anywhere!!

    What are the specifications for the original bulb? Is it 14v? How many amps?

    Any help would be greatly appreciated - Thanks in advance!!

    Contact me at --- [email protected] (reverse the letters after the "@" symbol)


I have an RXV850 with same problem, found there is a small light behind the flourescent display which is out.

Posted on Jan 19, 2008

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The display is actually a fluorescent device. Either the display is bad or the chip that is driving it is bad. There are a few other less likely items that could also cause this. Unfortunately, the closest thing to an "easy fix" is to replace the board. This isn't even necessarily easy or cheap. I couldn't tell you much more without having the receiver here to look at.

Posted on Sep 15, 2007

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Posted on Jan 02, 2017

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