2. amps-preamps
  3. 190854-114266

McIntosh Tube Amp will not come on.

I have a fairly new MA352 integrated 200W tube amp/ SS Preamp. In the middle of the day, during normal operation, I powered it on, but the 4 tubes stayed orange. They will convert to a green "ready" state. The display just continues to say, "Tubes warming up." This phase of start-up lasts about 5 seconds. Now... It will not get past that phase.  Has anybody else experienced this with McIntosh tube equipment? 

 

128x128rmcshane
stereo5's avatar
stereo5
6,385 posts
 

Try resetting the amp. Instructions should be in the owners manual. 

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dmguaragno
14 posts
 

Are all of the filaments in the tubes glowing? It may not be completing the warm up because of a bad tube.

oddiofyl's avatar
oddiofyl
3,825 posts
 

Agree.  Probably just a bad tube if problems exists after resetting the unit .

emergingsoul
1,132 posts
 

I would call up McIntosh, parts department, and plead for a set of new smaller tubes.  See if they can send it out to you without asking you to follow through on all the warranty BS you gotta go through.  Had a problem with small tubes and one was bad and it solved all my problems.  

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