In the last post I meant that then the R15 was in air the part which was connected to node of R14/15 was 2.12V and the other part which was in the air was 2V. I'll try to find the problem and post if there will be any improvement.

Okay

R14/R15 node is 2.25V
the other side of the R14 is 9.12V and the other side of the R15 is 2.01V

I was checking the ohms and read your post 10 minuets later. I'll check it then I'm back home

oh I just connected R15 back to its place  xP

still the same 9v...

Pulled the cap out and the voltage on the R14/R15 node is 3.12V  and the voltage on the other part of the R15 (the one that goes to ground) is still 0V. Oh, and I lifted the both R4 and R15 legs and both resistors are exactly 10K. And the traces don't connect to anything that they don't have too

Quote from: J M Fahey on August 09, 2011, 04:27:48 PM

*If* N(ode)-R14/C11/R13 is 9V, on N-R15/R14/C12 you *must* have half that, since both R14 and R15 are same value, 10K.(check it)
You do not 
C12 might be inverted/upside down (make sure negative goes to ground, positive to Vb)
IC1 might be bad after accidental inversion.
Measure Vb , first without IC , then without C12 if necessary.

I took out the  IC and the voltage at the node of R14/R15 is still 1.7V. I don't see any point in getting out the C12 because it's not connected and it's in the right direction. However there is a problem with the resistor - their color band shows 10k (Brown-Black-Orange-Gold) but while multimeter I measured -13k to -17K (it was jumping all the time). Should I put a new pair in?

I have to connect back the R14/R15 node to the to C12/C2 so I prefer to know first if the voltages should be like that. BTW all the other 4 things are right

The opamp was inversted (Sockets f!!* YEAH   ).
Now the node of R14/R15 is 1.7V
the other side of R14 is 9V
and the other side of the R15 is 0V

The opamp (pin is now getting 9V too.

Is it okay now?

Yeah I cut the connection.

The node of the R14/R15 is 0.24
the other part of the R15 is 0
and the other part of the R14 0.9

gets only 0.25V

Have anyone tried to build the FET TWIN (http://diyfactory.ru/index.php?option=com_content&task=view&id=89&Itemid=47) with a chipamp as a poweramp? If yes, how is it compared to small tube amp (like black heart) in terms of sound and working with pedals (mostly high gain dist).

How can I cut the track?

The cap polarity is okay. And the node get 8.25v (idk why not 9) but the connection of the electricity to pin 8 of the chip is very strange. Instead of going straight from the 9V to the pin (red) it goes from R13 to the pin (blue). Is this the problem? And what can be the other reason for the VB not getting the electricity?

I have a question about this amp that is not really connected to the thread. I hope you have no problem with me asking it. 
How is this amp in taking high gain pedals (I mean using the clean channel+pedal) compared to other amps (a small tube amp like black heart or a hifi chipamp)?