2. amps-preamps
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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

Showing 5 responses by corks67

corks67's avatar
corks67
15 posts
 
@arch2  @dhpeck 

and any other as3000 - how hot does your amp get? I've just bought a brand new one on Friday , sounds great but after 4 hrs the top plate is that hot I can't rest my hand. It not instant pull hand away but the heat is such I can't leave my hand there. 

Being a a reasobable size powered amp, I would expect it to get warm and indeed speaking on line to a couple of other owners here in Australia, they say theirs gets warm, mine is way beyond warm. 

Thanks dave 
corks67's avatar
corks67
15 posts
 
@helomech thank you for your response, my speakers are dynaudio confidence 5, listen so far has been done with volume at 9 to 10 o'clock. .

with music it got  dry hot, yesterday I just turned it on . No music same result very hot . 
corks67's avatar
corks67
15 posts
 
@helomech @arch2 

thanks guys, my dynaudio are I think 86db and I think a 4 ohm. But heat seems about the same , if the amp got warm under load unstanderable, but twice now I’ve let it sit and not play any music. And still gets very hot. 

Regards dave
corks67's avatar
corks67
15 posts
 
Hi guys,

dealer came over this afternoon ,agreed that amp is too hot and is going to get another one in asap.

Fingers crossed

 cheers dave
corks67's avatar
corks67
15 posts
 
Hi guys,

long time between visits, so an update.

The  first amp went back as warranty claim and I received a second amp which ran very hot so back to the dealer.

He arranged for the first amp to be checked by Yamaha Australia and it was discovered the biasing was out. So the second amp was checked locally by technicians and yep biasing was out. Biasing redone and now the amp runs cool to warm . And sounds great.

annoying that you have to mess around abit after spending this sort of money, happy because it’s running sweet now
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