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Power suply manuals for Pyramid

Service manuals for pyramid power supplys

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Pyramid.com

Posted on Feb 14, 2010

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I've got a new pyramid ps52kx, right out of the box. It shows 7.8 volts on the meter and the potentiometer will not adjust up or down, no control what so ever.. I did put an old used radio on it and no...


Have you set it up properly ? Consult instruction book. If you are certain it is defective, get a refund under the warranty (if it's new it should still be under guarantee)
18.January.2015.

Jan 18, 2015 | Pyramid PS52KX Pyr 46 amp power supply

1 Answer

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

Apr 30, 2009 | Pyramid (PS36KX) 600-Watt Power Supply

1 Answer

Pyramid PS-21K Power Supply HELP!


check the resistors that bias the transistors, and also any zeners connected to them.

Dec 30, 2008 | Pyramid 10 AMP 13.8V POWER SUPPLY Car...

1 Answer

Pyramid ps-36kx


Generally, the fuse only blows when the rectifiers fail. In other Pyramid supplies, they use a square, 4 terminal bridge rectifier. They probably use the same thing in your supply.

Let me know if you have any other questions.

Nov 15, 2008 | Pyramid - PS21KX 20 Amp Power Supply Car...

1 Answer

Pyramid ps-21k power supply


you need to get the voltage regulator circuit checked in your ps-21k

Jun 13, 2008 | Pyramid 10 AMP 13.8V POWER SUPPLY Car...

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