Potentiometers not working properly in circuit

[PramodMunaweera]

Hi friends,

I built a dual variable power supply using LM317 and LM 337 as shown in the tutorial in the link below,
http://www.circuitstoday.com/dual-adjustable-power-supply-using-lm-317-lm337

but the problem with my circuit is the potentiometers used to adjust voltage not working and not changing the output voltage, i have changed the potentiometers and the problem is still there, when i connect different resistors instead of pots the circuit works fine, so the problem is with the pots.

Friends, please help me to solve this problem.Are there any typical problems with using pots in circuits.

 

[Arouse1973]

What are the values of your resistors?
Thanks
Adam

 

[PramodMunaweera]

What are the values of your resistors?
Thanks
Adam

I used 5k potentiometers for adjusting(R1,R4) and 220ohms(R2,R3) Adam.

Thanks for your reply

 

[Alec_t]

Are you sure you are using the middle pin plus one end pin of the pot?

 

[Arouse1973]

I think you might have a wiring issue as alluded above.
Adam

 

[BobK]

I think your ground rail is missing some connections.

Bob

 

[PramodMunaweera]

Are you sure you are using the middle pin plus one end pin of the pot?

yes mate i checked it with multimeter

Pramod

 

[PramodMunaweera]

I think you might have a wiring issue as alluded above.
Adam

But when I connect different resistors instead of the pot the circuit works fine and gives the output what I want.

Pramod

 

[davenn]

But when I connect different resistors instead of the pot the circuit works fine and gives the output what I want.

Pramod

show us a photo of your construction WITH the pot's used