Question about Yamaha RX-V870 Receiver

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Yamaha RX-V879 receiver - display panel is not lighting

System works fine but the display does not light. I just moved and packed the unit carefully in the original box but on hooking it up in new location the display is not functioning. Is there a simple fix such as a fuse or LED that can be done? Is is there a place to get a wiring diagram? the manual doesn't seem to address this problem. thanks

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Hi, you will have to order the entire display from Yamaha. this display is only one piece. it si replaceable.

Posted on Mar 12, 2009

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First you go for a wire check...
check all the LED's are proper connected to system.

Posted on Mar 12, 2009

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Yamaha RX-V661 LCD / Front panel.





Symptom: when you first turn it
on, you can see a VERY little light but after 5 sec, you cannot see it anymore
or for most of us, we started using a flash light. Here is the summary of the solution and I know that it works
because I fixed it today 3/16/2011, 30 minutes ago.
As many pointed out that there is a
"light" 12v - 14v in the back but there is NONE. How do I know? I listened and searched and
there are NONE. The whole LCD in the front is air seal like a light bulb so it
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because if the light comes on, it stills work but not enough power. If the LCD
is broken, please don't try by the part and replace it because by the time you
read this, the parts and labor cost as much as buying a new one (on eBay and
not Best Buy).






Problem: in the middle of the unit near the back near the "surround
sound back", there are 3 capacitor rated at (2 units) 35v 220uf 85'C and
(1 unit) 50v 220uf 85'C. What Yamaha did wrong, base on my guess is that they
put the 85'C too close to the heat sink.
The heat causes the capacitor to slowly blown that is why you still get
your power to the LCD but not enough.






Solution: remove the top, unscrew EVERYTHING in the back and there are about 20 ~ good luck. For
those that don't have good memory, please take a picture. There are many plugs inside
that you need to unplug before you can remove 1st layer (audio/ video input)
2nd player (HDMI and Optical input), the last layer you will see 3 capacitors that
are kind of "blown" up (google "bad capacitors" pictures or
video). Remove them then replace them, which you can Google this on tube and
they should teach you how. It was very easy for me but then again, please don't
try to do it if you cannot even change your car oil or build a computer because
I believe that is the difficulty level.






solder iron: $9-$20 get it on eBay or radio
shack

(2 units) 35v 220uf 105'C and (1
unit) 50v 220uf 105'C or what I got was (3 units) 50v 220uf 105'C



I keep the 220uf the same to be
safe but increase the voltage and heat to increase the life of the capacitors.



Good luck everyone,


JimmySCW_991.jpg

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2 Answers

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nuwan.

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2 Answers

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1 Answer

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A small Lamp (light bulb)
A LCD display with a color filter.
Normally when the display goes out the problem is with the lamp
The lamp on my RXV 870 died after about 9 years of use.
I called Yamaha and was able to by a replacement.
The lamp is an odd voltage 14.5 if I recall.

Looking at the receipt i should have bought 3 for the cost of shipping. It cost about 10.00 cnd,

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