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SANSUI AU-719 Gets Really Hot?

I recently acquired a Sansui AU-719 which gets extremely hot. I have other Sansui's (AU-417, AU-517, AU-717, AU-7700, Etc.) and though they do get warm, none of them get anywhere near as hot as the AU-719. I listened to it for about 6 or 7 hours the other day (I only listen to vinyl) and as happens from time to time, after a few beer, the volume tends to go up:) Still never exceeded half volume and it was more than loud enough (think the neighbours hate me now), yet it got extremely hot, so hot in fact, that I could not keep a finger on it for more than a second or two for fear of actually getting burned. If this is normal for this model then I can hook up a small fan near it to help dissipate the heat. Today I've had it on for about 2 hours at just less than 1/4 volume and it is a bit warm but by far not too hot. I tried researching this on line and found two opposing points of view, some said it is normal while others said that the excessive heat probably indicates a problem which if it not fixed, could fry the amp. Any input would be much appreciated, thanks;
Denny
recordman34
thesoundhouse
250 posts
 
I had a couple of those amps through out the years from horse trading and they do run a little on the hot side. They are biased more on the A side but they should not burn you. It is a high current design and should run most speakers from 3 to 16 ohms with no problem. Your amp needs to go to a technician for tune up and anything it may need. vinyl on dude.
rrog
1,958 posts
 
Recordman

"I'm using the same set as I was with my other Sansui Amps, 8 Ohm speakers. I have not changed a thing, other than the amplifier."

Do they have a name on them? Check the back of the speaker. Sometimes there is a label with the brand and the model number.
recordman34 OP
7 posts
 
I use two sets of speakers on this set up, the mains are Sansui SP7500X and the satellite speakers are Paradigm 5SE. That is the current set up.
recordman34 OP
7 posts
 
Anyway, thank you kindly for the help, it is much appreciated, at least now I know that there is a problem and I will have someone check it out, once again, thank you very much;
Denny
newbee
4,767 posts
 
Your problem may be running 2 sets of speakers IF you are running them at the same time. Try disconnecting the satelites and see if the amp still runs hot.
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