Tube Map Power Amp 810:
Tube replacement report:
1. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _
Replaced tubes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
2. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _
Replaced tubes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
3. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _
Replaced tubes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
the tubes and their function:
V1 - ECC83 (12AX7): input stage, left & right channel; grade: FQ selected;
V2 - ECC83 (12AX7): phase splitter left channel; grade: selected;
V3 - ECC83 (12AX7): phase splitter right channel; grade: selected;
V4, V5 - EL84: power tubes, left channel, matches set;
V6, V7 - EL84: power tubes, right channel, matches sets;
13
LEFT
V1
Power Tube Fuses
LEFT
RIGHT
BIAS
LEFT
V2 V3
V4 V5 V6 V7
RIGHT
Fan
RIGHT
Output
Transformer
V4 V5 V6 V7
ECC83
Tu
b
e
P
ow
er
ECC83
Tu
b
e P
ower
ECC83
Tu
b
e P
ow
er
EL84
T
u
be P
o
w
er
EL84
T
u
be P
o
w
er
EL84
T
ub
e P
o
w
er
EL84
T
u
be P
o
w
er
LEFT RIGHT
Mains
Transformer