Thank You redk9258.
I measured the Q1, Q2 and Q4, and these are the values I got.
I have no shorts in none of them.
Q1
B-550mv
C-21V
E-1,8V
Q2
B-550mv
C-21V
E-0V
Q4
B-0V
C-12V
E-0V.
I checked all resistors and diodes, and none are oppened or shorted.
Thank You again,
Regards,
Hugo.
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