Its my power cap dead or alive?

[Shadow_]

i recently bought a power cap for my new system: the power is 2 farad brand:boss it has LED displayer and LED lighting normally i turn my car on the power cap will turn on the light and showing numbers on the display but now it doesnt showing anything but my music still playing, i just wondering is the power cap is broken or the LED display and light is blow-up.

[Reliable]

Even if the capacitor is broken, your music Will still play. Because it should be wired as a parallel 12v supply to the regular 12v supply from the battery.

So yes it could be dead.

However for your safety, being a capacitor and being dangerous I would not assume it is dead. I would assume just the leds and led display has failed and the capacitor still has the potential to be alive and dangerous.