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Throughly disappointed with my new Yamaha A-3000 Integrated.......

well, I love it when it's not shutting down.  Finally called the dealer and told them I'm done with it.  From the first day, it shut off and went into protection mode after 10 minutes of listening.  It's doing it all the time now.  I did figure out how to reset the amp, but it continues to go into protection mode.  Here's what I've done to track the issue down.  Am I missing anything?  By the way, I'm a user, not someone who can track down voltages, test wires etc etc.

1. Pulled power cord for 30 minutes- I use a PS audio PC
2. Unplugged all connections- amp stayed in protection mode with nothing plugged in.
3. I then figured out how to reset the amp.  The amp then worked for for some periods before shutting off.  Yesterday for example, playing vinyl, amp shut off after 5 minutes.  I then did the reset and listened for 2 hours without shutting down. 
4. Today, after 5 minutes it shut down again.
5. Doesn't matter if it's vinyl or CD playing.
6. I just unplugged my Sub now as the rca cables are a bit bent up; however it didn't affect play for 2 hours yesterday without shutting off.

Disappointed as I was looking forward to breaking this in over Christmas break........  
128x128dhpeck
jim204
881 posts
 
My friend has the exact same problem which is very annoying as in all other areas it is a superb amp. He uses large Zingalli speakers which are very efficient and an easy load. It goes off for no apparent reason even when not playing music at all. If it wern't for the fact that it is the best amp he has had he would dump it tomorrow. He even has the partnering CD player and it is a killer combination , very dynamic and superbly detailled but no good if you cannot tust it. I do hope Yamaha can overcome this problem.
almarg's avatar
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almarg
9,670 posts
 
Dhpeck 12-24-2017
6. I just unplugged my Sub now as the rca cables are a bit bent up; however it didn't affect play for 2 hours yesterday without shutting off.
By any chance have you at any time had the sub connected at speaker level? 

If so, the speaker level connection could easily account for the intermittent protective shutdowns, and possibly even damage.  As you've probably seen stated in the manual the amp has balanced outputs, meaning that there is a full amplitude signal on the negative as well as the positive output terminals.  If only one sub is being used, connecting most subs at speaker level would cause the signals on the two negative output terminals of the amp to be shorted together, and would also probably connect them to AC safety ground via some low impedance.  As you may have seen, the manual specifically cautions against doing that.

Good luck.  Regards,
-- Al
 
dhpeck's avatar
dhpeck OP
59 posts
 
@almarg - I've had the sub plugged into the pre-out connection as recommended.  Were you thinking perhaps the sub was plugged into the speaker connections?
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almarg
9,670 posts
 
Were you thinking perhaps the sub was plugged into the speaker connections?
I was asking if you had ever done that to make sure it wasn’t the case, because if you had ever done so it could easily account for the symptoms you described. And I suspect that the Martin Logan sub you mentioned in another thread provides both speaker level and line level inputs.

Also, perhaps pointing out that connecting a sub to the speaker terminals of this amp is a no no will prevent someone else who may read this thread and has the same amp from damaging it.

Good luck. Regards,
-- Al

dhpeck's avatar
dhpeck OP
59 posts
 
Thanks Al got it.  I know I didn't do that.  Will wait on new unit and go from there  
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