Problem with 555 timer

[electrowhiz]

I planned to operate 555 timer in monostable mode. I gave the connections correctly.
Pin 8:Vcc
pin1: gnd
pin 5: 0.1 nf cap to gnd
pin 8 to 7:47kohm
pin 7 to 6:just a wire
pin 6 to gnd: 100 microfarad
pin 2 to Vcc through a resistor.
pin4: to Vcc
toggle switch is used to alter between gnd and Vcc for triggering the pin2
pin 3 to gnd: resistor in series with led.
when i gave a trigger, the led started to glow continuously. Why this happens? actually i set it to operate only for 5s.
The Led turned off only when the supply is removed.What should i do to rectify this problem

 

[AnalogKid]

First, since you are a whiz, post a schematic. Be sure to have a reference designator for each component so we can discuss them clearly.

ak

 

[(*steve*)]

Discharging the 100uF capacitor through the discharge pin could easily kill the transistor. Check you don't have continuity between pin 1 and 7 now.