Yamaha front panel display dim

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
is a light bulb already. Also, you might
see a little burn/gray smoke on the left hand side, don't worry about it
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

You can change the LCD brightness in the Setup / Display menu.

I have also the same problem, brightness was full when display was very dim. Now display is black but all other works correct. Probaby I have to buy new display.