Heathkit HW-12 - Soldering Techniques

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HEATHEIT:
PART PARTS
DESCRIPTION
No. Per Kit
Hardware (cont'd
(48) 254-1 27 a #6 lockwasher
(49) 254-3 2\/ #10 lockwasher
(50) 254-14 lv 1/4" lockwasher
(51) 254-5 2v, Control lockwasher
(52) 255-5 44 #6 x 3/4" spacer
(53) 255-44 2; 10-32 shoulder spacer
(54) 259-1 5 V/ #6 solder lug
(55) 259-10 4 Controi solider lug
(56) 259-20 45v/ Solder terminal
(57) 260-7 i uF Transformer mounting clip
(58) 435-1 1 Octal socket ring
Cable Assembly-Shielded Cable-Wire Sleeving (67)204-M564 2 we
(68) 204-M453 1
134-83 i ,, Cable assembly
343-7 1 7 Single-conductor shielded
Canle
347-3 1 ,: Double-conductor shielded
cane
344-1 i Hookup wire
346-1 ly Sleeving
Connectors-Sockets- Plugs
(59) 432-38 i Vv , Male microphone connector
(60) 432-39 1 a Female microphone con-
. nector
(61) 434.112 6 v, 7-pin tube socket
434.79 6 W, 9-pin tube socket
434.140 2 i 12.nin tube socket
(62) 434-105 1 ¥ 8-pin tube socket
(63) 434.4 2 wz, Octal socket
(64)434-42 4 wv Phono socket
434-44 2 v; Pilot lamp socket
(65)438-25 4 «/ Phono plug
438-6 1 v / Octal plug
PART PARTS DESCRIPTION
No, Per Kit
Knobs “
462-106 1 Z, Small knob
462-122 5 Vv Pointer knob
462-189 1 ,f Large knob
Metal Parts /
90-265 17 Cabinet
(66)100-M43. 1‘ Dial plate
100-M442F929
1 jf, Chassis
100-M455 1 ¥ Front panel
(69)
Angle bracket
/ Pilot lamp mounting
bracket
204-M576F
1 / Gimbal bracket
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Rubber grommet
Circuit board
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Medium rubber feet
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Meter
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Plastic dial
Alignment tool
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PROPER SOLDERING TECHNIQUES
Only a small percentage of customers find it
necessary to return equipment for factory
service, By far the largest portion of mal-
functions in this equipment are due to poor
or improper soldering,
If terminals are bright and clean andfree of wax,
frayed insulation and other foreign substances,
no difficulty will be experienced in soldering.
Correctly soldered connections are essential if
the performance engineered into a kit is to be
fully realized, If you are a beginner with no
experience in soldering, a half hour's practice
with some odd lengths of wire may be a worth-
while investment,
For most wiring, a 25 to 100 watt iron or its
equivalent in a soldering gun is very satisfactory.
A lower wattage iron than this may not heat the
connection enough to flow the solder smoothly.
Keep the iron tip clean by wiping it from time
to time with a cloth,