Hohner StringVox K2 Repair Notes page 9

ELEX K2-0 Power Regulator Board: Drawing
components side, shown transparent to circuit side
1 1
33 4V~ AC in
4× 4×
1N4003 1N4003
2 2
3 3
4× 4×
19 8V~ AC in
1N4003 1N4003
4 4
C
DZ1 DZ1
R3 R3
E
BZX 79C11V BZX 79C11V
43R 43R
Q2 Q2
B
R4 R4
BC286 BC286
1K5 1K5
C
VR1 VR1
2K2 2K2
R2 R2
1K8 1K8
R1 1K5 R1 1K5
C
Q1 Q1
TIP32C TIP32C
B
E
9 9 10 10
–26V –? –15V –?
designed ELEX S.p.A. (Excelsior) c.1975–79 | drawn 2024 Electropict
5 5 6 6
B
Q3 Q3
E
BC286 BC286
+
B
Q4 Q4
E
C
TIP41A TIP41A
R7 10K R7 10K
R5 2K7 R5 2K7
+
C1 C1
220 220
R6 R6
25V 25V
3K0 3K0
DZ2 DZ2
BZX 85 BZX 85
C15? C15?
7 7 8 8
R8 33K R8 33K
C2 C2
220 35V 220 35V
R9 10K R9 10K
C3 C3
2m0 35V 2m0 35V
C4 C4
1m0 25V 1m0 25V
11 11 11 11
GND GND
+
C5 C5
100 100
35V 35V
+
+