Kliche Mini problem

[Michi1590]

Hey Guys,

i finished my second pedal from pedalpcb, the kliche mini.
Now i have some problem with the circuit. The pedal is working in its standard function. So switch on/off is working. Also tone & volume control is fine. But the circuit itself doesnt work. The Gain control nearly doesnt change the sound. No distortion at all. In my opinion the sound gets a bit thicker when i activate the pedal, but very minimal.

Can anybody help me pls.

Greetings, Michael

 

[music6000]

Is this what your 100k Gain pot looks like?

 

[Michi1590]

Yes, its that one

 

[music6000]

Yes, its that one

Confirming it says B100K & not B10K

 

[Michi1590]

The 6-pin pot is B100K, the other two 3-pin pots are B10K

 

[music6000]

The 6-pin pot is B100K, the other two 3-pin pots are B10K

Can you provide pictures of your finished PCB.

 

[Michi1590]

there you go

 

[Michi1590]

the resistors are pretty messy on the board because the holes were to narrow on this pcb. But i checked that no one is touching each other and i checked all soldered parts and switched the two equal IC's

 

[music6000]

the resistors are pretty messy on the board because the holes were to narrow on this pcb. But i checked that no one is touching each other and i checked all soldered parts and switched the two equal IC's

Yes, this is designed for 1/8 W resistors, not 1/4 W.
Is the Treble Pot Insulated between Pot & PCB

 

[Michi1590]

Yes i glued a pad between

 

[music6000]

Yes i glued a pad between

Can you confirm what the Mark is in the Red Circle?

Can you see if the Germanium Diodes are touching resistors in Purple Circle
In Super size, They look like they might be touching!

 

[Michi1590]

The Diodes dont touch the resistors. They're mounted higher an the legs are tapered.
Do you mean the last mark on second resistor from left ? It's a brown mark

 

[music6000]

The Diodes dont touch the resistors. They're mounted higher an the legs are tapered.
Do you mean the last mark on second resistor from left ? It's a brown mark

Can you check for Continuity between R10 (15K) & R9 (2K) on the side where that Brown mark is.
Can you send picture's of TL072 Op Amps markings.

 

[Michi1590]

IC's 1&2: UTC VJTH TL072L 01
IC 3: TC1044S

 

[Michi1590]

i do have conectivity between them

 

[music6000]

IC's 1&2: UTC VJTH TL072L 01
IC 3: TC1044S

I'm not familiar with this UTC Brand. I have only used & heard of Texas Instruments TL072.
Maybe someone else can verify their Authenticity.

 

[zgrav]

What are your voltage readings on the ICs? Are you getting the +18 v and the -9 v from the charge pump?

 

[Michi1590]

How do i check that ? Sorry, i'm not that experienced in IC stuff

 

[zgrav]

You need a digital multimeter to test how much voltage you have at different contact points on a circuit board when the power is applied. Same device will also let you confirm that your parts are connected properly on the circuit board, and test the value of resistors (usually easier to do before they are soldered in place). If you don't have one and you are going to build more pedals, you should get one. You can get one for $10 from different online sources.

 

[Michi1590]

OK yes i have a Multimeter and im used to continuity, diodes, resistor, capacitor checking. But i never checked voltages on ICs and never had something to do with a charge pump. So how do i do that? At wich pins do i check the voltage ?