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
oddiofyl's avatar
oddiofyl
3,983 posts
 

If you have another like preamp level tube, swap it one at a time and hopefully it will root out the bad tube and go to ready state

stereo5's avatar
stereo5
6,455 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.

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