got a hifonics samson gen x and although in full working order the strip of lights don't work! i took the strip out and there's about 6 small led's in there on 2 different circuits. does anyone have a schematic for gen X amps or know if this is a common fault and how to cure it? all the led's have blown on one circuit so i'm guessing there's issues on the main board somewhere 🙄
thanks Mark.
thanks Mark.
yes, last of the zed stuff, it's the smallest of the range (2x75watt) but they weigh a god damn ton!!
I was trying to find what the amp looked like and from the owner's manual for the gen x amps, it didn't appear that they had any LEDs on the top of the amp.
there's a plastic strip that runs the lengh of the amp at the bottom and behind this there's a long thin board that holds the led's/lights on..
If you can get at the board, using diode mode on the DMM you can light the LED's individually. My guess they have a few in series and a resistor to set the current level.
cory
cory
i can get to the board and i know which are faulty and not faulty, i need to know why they blew and what drives them (there are 2 circuits for 2 sets of lights)
You'll have to follow the traces back to the main board. From there you'll have to follow the traces back to whatever is driving them. In most cases, a transistor is used to drive them.
They may have blown because they were being driven too hard. Many times, the LEDs simply can't handle the current being driven through them.
The LEDs are likely being driven by 12v (most common way to drive them). You can calculate the current draw through the string of the new LEDs by multiplying the forward voltage drop of each LED by the number of LEDs in series. Then subtract that from the supply voltage. Divide the remaining voltage by the resistor value and that will tell you how much current will flow through the string. This won't do much good for the ones in the amp but you can use it to ensure that the new ones don't burn out.
They may have blown because they were being driven too hard. Many times, the LEDs simply can't handle the current being driven through them.
The LEDs are likely being driven by 12v (most common way to drive them). You can calculate the current draw through the string of the new LEDs by multiplying the forward voltage drop of each LED by the number of LEDs in series. Then subtract that from the supply voltage. Divide the remaining voltage by the resistor value and that will tell you how much current will flow through the string. This won't do much good for the ones in the amp but you can use it to ensure that the new ones don't burn out.
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