Deassembly log

Detector and 1st ANL on zones: 14B 8A 8B

1.  0.05 uF paper cap from point A(outer foil) to GND-V11pin1 (thus it was a sprague original cap, there is not any cap between point A and GND in halli’s diagrams.

2.  wire from B4pin2 to V7pin?

3.  2wires to panel lamps from V11pin7 (6.3V line)

Tubes

ID / required model / Function / found inside / is it pin2pin
compatible? / Status
Sep 99 / Action
done
V7 / 6B8 / 2nd Detector
S-meter driver / VT-93
(=6B8) / Y / inefficient / ·  Bought a NOS (glass)
·  Substituted
V10 / 6H6 / Noise rectifier / 6H6 / Y / OK
But Very low / ·  Bought a NOS
·  Substituted

Caps & Resistors

ID / Required
value / Other params
Watt for res.
Working voltage
for caps / Type / Required
tolerance
(%) / actual value / Connections / Function / status / action
required / Remove
Seq # / Replaced
with
Sw5-1 / Two coax cables from inside chassis / · ANL switch / NOK / Restore / 10
Sw5 / ·  R53 central lead
·  White-red wire / · ANL switch / NOK / Restore / 10
R53 / 50K / Potentiometer / N/A / End2end
48,5K / Front view assumed:
·  Right:green wire
·  Central:wire to sw5
·  Left:white-blue wire / · ANL Switch
· other function analysed on ANL page / Restore / 10
C53 / 0.05uF / 200V D.C. / Tubular paper / -10+40% / ·  B6pin1(C)
·  B8pin2(GND) outer foil / · ANL development net / NOK / Subst. / 9
C36 / 0.02uF / 600V D.C. / Tubular paper / -10+40% / ·  B5pin2
·  B4pin2(GND) / · bypass for V6 plate / NOK / Subst. / 8
R23 / 3K / ½ / Carbon / 20% / 4.24K / ·  B7pin3(B+)
·  B5pin2 / · Plate load of V6 / NOK / Subst. / 7
C37 / 50pF / 500V D.C. / Mica / 20% / 62pF / ·  B7pin1(B)
·  V11pin8(GND) / · Detector filter net / NOK / Subst. / 6
R24 / 100K / ½ / Carbon / 20% / 136K / ·  B7pin1(B)
·  B7pin2(A) / · Detector filter net
· ANL development / NOK / Subst. / 5
R25 / 500K / ½ / Carbon / 20% / 692K / ·  V11pin8(GND)
·  B7pin2(A) / · Detector filter net / NOK / Subst. / 4
R70 / 1M / ½ / ? / 20% / 1.260M / ·  B6pin1(C)
·  B7pin1 (B) / · ANL development net / NOK / Subst. / 3
R27 / 500K / 1/2 / Carbon / 20% / 670K / ·  B4pin4
·  B7pin2(A) / · AVC development net / NOK / Subst / 2
C39 / 0.02uF / 400V D.C. / Tubular paper / -10+40% / ·  B4pin3
·  V7pin1(GND) outer foil / · AVC development net / NOK / Subst. / 1
R45 / 20K / 2W / Carbon / 10% / 24.5K / ·  B4pin1
·  / BFO plate load / NOK / Subst. / 0
C50 / 0.02uF / 400V D.C. / Tubular paper / -10+40% / ·  B5pin1
·  B7pin2(A) / · AF coupling cap / NOK / Subst. / 0
C108 / 70-90pF / Variable ceramic / N/A / ·  inside T3
·  to secondary coil / cleaned / N/A
C109 / 70-90pF / Variable ceramic / N/A / ·  inside T3
·  to secondary coil / cleaned / N/A

Inductors/Transformers

ID / required value / required d.c. resistance
(ohms) / actual d.c.
resistance
(ohms) / connections / notes / status / actions
required / Remove
Sequence
# / Done action
T3

(*) the new transformer has been calculated and wound by Ditta TOSCO, Via Matera,7 - Torino (ITALY) Tel +39 11 3294952

Misc

ID / specs / Found
inside / connections / notes / status / actions
required