YAMAHA STAGEPAS 300: DO I HAVE A BLOWN AMP?

Studio Equipment, Backline, Accessories etc.

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Buzzard
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Re: YAMAHA STAGEPAS 300: DO I HAVE A BLOWN AMP?

Unread post by Buzzard » Sun Jun 03, 2018 9:37 am

Interesting and confusing. :roll:

I have followed and read this topic for a while.

Overheating seems to be a common problem, but how common ?

Is the mixer meant to be taken out before use ? (that will probably give more cooling)

----------------------------------------------------------------------------------------------------------------------------------------------------
here's a cut&paste from the manual provided by Chris (Parametric):

Power shuts down suddenly:

􀁆 Is the volume set at high for an extended period of time?
If the mixer is used at a volume beyond the permissible level, the protection circuit automatically turns the power off.
Turn on the power again only after the mixer cools, since it cannot be turned on until the internal temperature goes down.
Reduce the volume with the MASTER LEVEL control so that the LIMITER indicator flashes only briefly in response to the
highest transient peaks.

􀁆 Is the vent on the top panel of the mixer blocked?
Since inadequate ventilation can result in overheating the mixer, the protection circuit may come on
automatically and the power may be turned off.
Turn on the power again only after the mixer cools, since it cannot be turned on until the internal
temperature goes down.
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Basically Yamaha leaves it up to the user to know when loud is too loud,
giving the user only a peak indicator to help knowing. :cry:

Old school transistor amps at about 2x30 watts used to have way larger cooling fins, but no fan, that did the trick then.

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Peter
Yamaholic, Guitars, Amps and Bikes. :idea: My Guitars: http://www.yamahamusicians.com/forum/vi ... =24&t=7004 :idea:
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TommyBoy
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Re: YAMAHA STAGEPAS 300: DO I HAVE A BLOWN AMP?

Unread post by TommyBoy » Mon Nov 05, 2018 12:49 pm

Hi All,
I have a stagepas 300 and it was working well up to a week ago. I set it up for a rehearsal and whilst testing it clicked as the limiter hit red and I lost all output although the power light stayed on and the volume lights jumped up and down as i spoke through the mic but just no sound through the speakers. I switched it off and on again and it worked although I hit the limiter again and it clicked and i again lost all output. It seems to function as it should although the limiter is hitting red at low volume so is effectively unusable. It hasn't been knocked or dropped and there is no smell of burning....does anyone have any idea please?????? Thanks
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