Find 12 faults

[Ezra97]

Each element in the circuit is labelled ( c1, c2...) There are twelve design faults can you find them ?
Q2 is one of them...I need help finding all of them I found about 9 but not sure..

 

[Ezra97]

I found
F1,D1,q2,c3,q1,d3,r15
Im not sure about the cap connected to the oscillator (c,28,29,32,33)
Also L1 and l4 are maybe not correct?

 

[davenn]

I found
F1,D1,q2,c3,q1,d3,r15
Im not sure about the cap connected to the oscillator (c,28,29,32,33)
Also L1 and l4 are maybe not correct?

I agree with most of those

now for bonus points, in a list, tell us why you think each of those is wrong