Mercury 1400 User Manual

TROUBLE SHOOTING WITH THE MODEL 1400
GENERAL
The Model 1400 provides a fast means of troubleshooting open,
shorted, or intermitten capacitors. To make a quick in-circuit check
of any small cap~citor, proceed as follows:
1. With test clips connected across the capacitor, switch to
SHORTS. If eye remains open, capacitor is good.
2. Without moving
the test clips, switch to OPENS. If eye remains
open, capacitor is good.
3.
If an intermittent condition exists, wiggle the capacitor during
each of the above tests; also try applying heat or cold, or tapping
on it, while watching the indicator bars. Any momentary closing
of the bars means the capacitor is defective.
TV TROUBLESHOOTING
Refer to TV Schematic to locate the following capacitors for quick
check with the Model 1400:
Circuit
Trouble
Capacitors to Test
Vertical Unstable sync.
· Integrator network
· Timing network
• Wave-shaping circuit
• Feed back network
Sound Poor quality Ratio detector electro-
lytic
Horizontal Poor sync. or no
All capacitors in duo-
raster
diode Hor. AFC circuit
(weak high voltage)
· Coupling capacitors to
hotiz. output tube
· Horiz. drive (wave-shaping)
capacitor
• Horiz. Lin. Coil by-pass
capacitors
7.

Mercury 1400 Specifications

General

Brand	Mercury
Model	1400
Category	Test Equipment
Language	English