Pyramid Ps 12-kk power suply the red light comes on when you connect anything to it.Dissconnect it and back to green.

not enoghf power in

Recommend contacting a local car audio professional or Pyramid customer support directly here:

http://www.pyramidcaraudio.com/ContactUs.aspx

I prefer green and white, but that's just me.
Recommend contacting a local car audio professional or Pyramid customer support directly here:

http://www.pyramidcaraudio.com/ContactUs.aspx

Usually, this indicates an overload condition. I have a Pyramid 35 amp supply that has no green light but uit does have a red light and an irritating little beeper that the instruction book says is activiated when power draw approaches 90% of rated output. (Why not call it a 30 amp supply if you can't use the full 35???) Enough editorializing. You don't say if the supply actually works, just that the light changes color. If it doesn't work at all, I would start with checking the diode bridge for a blown or leaking diode. If one is bad, it can output enough to drive an LED but fail anything else. If these are good, check the filter capacitor. If this is bad, the hum could concievably confuse the regulator circuit. Next, I would check what ever voltage regulator it has in it. I can't comment on specifics as there are many schemes that can be used. My unit, for example, is like a mouse driving an elephant. It has a small 723 regulator IC, (Aprox. 100ma output), controling 4 large TO-3 pass transistors driven by a 36 volt 40 amp transformer to boil it all down to an adjustable 12 to 15 volts.
The bottom line is without knowing if the unit is puting out or not and not having it in my hand to look at, this is the best I can do. I hope it helps.
Good luck.
Jeff

Make sure is grounded properly and check the wires, the positive is connected to + and negative to -
I hope this helps.

hi
concerning your problem most of related trouble on Lg or Samsung tv are power suply
module on witch there are a few capacitor that need to be replace there are 1000uf 16volt that you could replace by yoursel if you are handy with soldering tools or you can look for the part number printed on the board and find it on ebay
for in between 100-200$

The fan is cooling the power suply and geting power from it the power suply is going bad the relay is turning the tv off to proteckt it's self.

It could be even simpler than that, yes an improper impedance rating on an amp will cause it to overheat, but should function temporarily until it reaches peak temp. If the outputs were blown the protect light should not light up being that they would need to work to cause the protect light to come on. I would double check all of your connections, one small little crossed wire would cause an amp to immediately go into a protect mode.

The wires should just attach to the red and black terminals on the radio, strip some wire unscrew the terminals a little wrap behind, and tighten again. Good luck! Or buy some banana plugs and they will plug right in the front

The problem I have had with a PS-20 is a blown capacitor. Hooked to a radio, would allow radio to receive fine, but when trying to transmit, amperage would bottom out. Behind the transformer is a large circuit board. UNPLUG POWER SUPPLY, remove cover, Undo the two nuts, flip board over, and gently rock the 4700uf capacitors side to side. If they move more than 1/16th of an inch, chances are they are blown. Remove/replace and should be good to go...