How to connect 12v Dc led strip to 12V AC current

On the power pack there may be a label that says 12v dc or 18v Dc or some other voltage. There may be a input voltage on the keyboard and a current rating eg 12v DC 1A current or it might be AC voltage of 12V or some value.

get a volt meter or a multimeter and measure the voltage on the plug. positive is the inside part and the outside part is negative. dc setting if dc volts expected or AC setting for if AC voltage expected
Or get power pack tested at a music shop you may have a faulty power pack

i use these for all my led lights, 12V 5A 60W Power Supply AC to DC Adapter for 5050 3528 Flexible LED Strip...

i already answered this, 12V 5A 60W Power Supply AC to DC Adapter for 5050 3528 Flexible LED Strip...

RED +12V
BLACK -12V
YELLOW +VIDEO
WHITE - VIDEO

Can't see how that should be any problem. Use the switch from the PIR to turn on and off the power supply. Not after the 12v but before
.

I will help you.please watch the videos, and use basic tools , patience , and carefully.
http://www.youtube.com/watch?v=TquYcOzGIw4&feature=related
http://www.youtube.com/watch?v=9G4MZh8JO2Q
http://www.youtube.com/watch?v=M7qJrRbdfBc
http://www.youtube.com/watch?v=MIIxoPtvhy8
The SCR lower board is designed with diagnostic LED lights. The LED's are color coded according to
their specific function. Green indicates a properly operating treadmill; the green lights should always
be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a
treadmill malfunction. Here is a list of each LED and what it signifies:
MOTOR (yellow) - The MOTOR LED illuminates when dc (direct current) voltage is sent to the drive
motor. The LED gets brighter when the dc output is increased.
RLC (yellow) - The RLC (R = Reactance / L = Inductance / C = Capacitance) LED illuminates when
the filtering system is properly working. The filtering system includes the capacitor and filter choke. If
there is a short in either component then the RLC light will not come on.
DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are
functioning properly. When the LED lights, it tells us that the relay has energized and is sending high
voltage (110vac or 220vac) to the elevation motor.
AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is
delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR
LED.
+12V (green) - When the proper AC voltage is delivered to the treadmill, passes through the in-line
fuse/s, through the full wave bridge rectifier (changes AC to DC), through the transformer (steps down

DC to +12vdc) then the +12V LED lights.
This the board LED, who control the signal for Main Motor+Elevation Motor. You must see, the LED DN+ UP( both will be Lit) in any position down or Up.
With this you will fix it.

If you need further assistance, please reache, sincerely. God bless you.

E.CUADRA
MANAGUA, NICARAGUA. C.A.

Yes. Either by using a 12v dc tv, or if it uses 120v/240v ac by using an inverter on the 12v dc supply which ups the voltage and converts to ac.

dc will not power ac, soorry

12V DC

This system uses in conjunction with the transformers a rectifier which converts the High AC current voltage (220V-AC) to a Low AC current voltage (12V-AC) and then the rectifier converts that energy into the D/C current (12V DC). The two diffrent 12V power sources are controlled, operated by a "electric" relay, via a roadside or electric selector switch. DS_TK TECH