Question about Pyramid XPA-100 Amplifier

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Fan is to loud

Disconnecting the fan amp won't turn on to the pyramid xpa-100

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It might need the fan plugged in to make a full curcit and that's why it won't turn on

Posted on Mar 29, 2013

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The tv usually turns on but all of a sudden it won't. When it does turn on it makes a loud noise like a boat. Someone told me its the fan but I'm not 100% sure though. The noise stays on until the tv


Sounds like the motherboard on the TV has failed. Would recommend replacing the TV or taking it to a TV repair shop which may cost more than just replacing it.

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Sort of sounds like the timing belt broke-- if you have one

The valves may have hit the pistons & that is why it won't turn over

I don't know any of that is true & won't wish it on anyone,but
it is a place to start

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> fan is loud

When you first turn the computer on, the full runs at 100%, until the motherboard's "POST" (Power On Self Test) procedure has checked all the hardware, and "beeped" the speaker just once.

So, no "beep" (or multiple "beeps") and the 100% speed of the fan suggest a hardware problem with your motherboard.

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1995 chevy lumina sensor went out and fan wont turn


How did you determine that the sensor failed. Did the check engine light come on? When you say that the fan won't turn, do you mean that it won't turn on and run or that you can't physically turn it by hand. To determine this, disconnect the electrical connector to the fan and try to turn it by hand. It should turn easily. If it doesn't then it must be replaced. If it does then reconnect the electrical connector to the fan and try to operate it by disconnecting the temperature sensor lead and placing a jumper wire between the terminals of the harness. turn the AC control to AC/MAX and turn the ignition key to on. If the fan runs then the problem is the sensor. If it doesn't then check the fan control relay and any related fuses. WARNING : Use extreme caution when testing the fan circuit. Never attempt to turn the fan with the electrical connector in place. The fan can operate at any time even if the engine is off.

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What exact model? Do you mean the "protection" indicator?

You might find some help or documentation here...

http://www.cyrusaudio.com/product-archive/power-amplifiers



Generally speaking, an amp protects itself from heat, shorts and overloads.

Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure
the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without
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If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

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Re: Pyramid PS-36kx power supply buzzer sounded,red light came on


Hi! I saw your question, and maybe this will help. I also have a Texas Star 100w amp, and this same power supply. Even though the nominal draw for your equipment is way below the rated amp flow of the power supply, when you key up, and the output on the amp is at max, you are drawing the limit of your power supply! Try running this setup at a lower linear output. You don't need the full 100 watts to get out! 60-80 watts is aplenty! You should start at a low output, and slowly increase the output(while keyed up), untill the power supply starts to complain.(buzzer/light). This is what your limit will be. The only other cure, is a MUCH bigger power supply. Unfortunately, I cannot afford a 60-90 amp supply, so this is what I am forced to do to use the one we have. Also,keep your cb's output very low when using the linear amp. These amps are supposed to get a low signal from your radio, or the linear amp is overdriven. (noisy and unstable. Hope this helps you! 73's to you! jimsjinx

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1 Answer

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