Question about Yamaha RX-V661 Receiver
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 still works but not enough power. If the LCD is broken, please don't try buy the part and replace it because by the time you read this, the part 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 pictures. There are many plugs inside that you need to unplug before you can remove 1st layer (audio/ video input) 2nd layer (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
(2 units) 35v 220uf 105'C and (1 unit) 50v 220uf 105'C or what I got was (3 units) 50v 220uf 105'C - they are about $0.50 to $2.00 eachI keep the 220uf the same to be safe but increase the voltage and heat to increase the life of the capacitors.
Good luck everyone,
Posted on Mar 17, 2011
You cannot get the osd to display when you go into the advanced set up by holding the tone control and turning on the master on/off and therefore cannot see any display to reset the system. Could someone post the number of clicks when turning the Program dial and number of key presses for the tone control to do the full reset. We are operating completely blind. Thanks!
Posted on Nov 27, 2009
Try resetting this unit thru your osd on your television
Posted on Oct 09, 2009
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Posted on Jan 02, 2017
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Nov 08, 2012 | Yamaha RX-V661 Receiver
Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.
Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.
Check for loose speaker connections as a root cause for intermittent shutdown.
Feb 06, 2011 | Yamaha RX-V661 Receiver
Nov 05, 2009 | Yamaha RX-V661 Receiver
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,
May 29, 2009 | Yamaha RX-V661 Receiver
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