Heathkit IG-18 User Manual

IN
CASE OF DIFFICULTY
1. Recheck the wlrmg. Trace each lead in
colored pencil on the Pictorial as it is
checked. It is frequently helpful to have a
friend check your work. Someone who is not
familiar with the unit may notice something
consistently overlooked by the builder.
2. About of the kits that are returned for
repair do not function properly due to poor
connections and soldering. Therefore, many
troubles can be eliminated by reheating all
connections to make sure they are soldered
as described in the Soldering section of the
Kit Builders Guide.
3.
Check to be sure that all transistors are in
their proper locations. Make sure each tran-
sistor lead is connected to the proper point.
4. Check the values of the parts. Be sure the
proper parts have been wired into each cir-
cuit as shown in the Pictorial Diagrams. It
:E:EAT:E:KIT®
would be easy, for example, to install a
62 kn (blue-red-orange) resistor where a
620 kn (blue-red-yellow) resistor should
have been installed.
5. Check for bits of solder, wire ends, or other
foreign matter which may be lodged in the
wiring, or on the circuit board foil.
6.
If the trouble still is not located and a volt-
meter is available, check the voltage read-
ings against those shown on the Schematic
Diagram. A review of the Circuit Descrip-
tion may help you locate the trouble.
NOTE: Refer to the Circuit Board X-RayViews
on Page 67 and Photographs on Page 69 for the
physical location of parts.
NOTE: In an extreme case where you are unable to resolve a
difficulty, refer
to the Service and Warranty sections of the
"Kit Builders Guide", and to the "Factory Repair Service"
information on Page 59 of this Manual.
57

Heathkit IG-18 Specifications

General

Brand	Heathkit
Model	IG-18
Category	Test Equipment
Language	English