6.8K
.003
1
,,8,, A.r.
L
AMP.
IMEG
VOLUME
CONTROL
B+
135V.
AUDIO OUTPUT
33K
Bi-
260V.
Figure 7-A typical TV audio system
.0047
MrD
1500..R.
B+
260V.
HOW TO TROUBLE SHOOT SYNC AMPLIFIERS AND
SYNC SEPARATOR STAGES
With the Television Analyst it is possible to quickly and thoroughly check
the sync separator stages of any television receiver. To illustrate the pro·
cedure to follow, three representative sync separator sections will be discussed.
A fairly simple sync separator system is shown in Fig 8. This is seen
to consist of the two triode sections of- a 7AU7. We will assume that the pie-
rROM
.OI
7AU7
5000
MMr
VIDEO�
SYSTEM
39
K
.047
TO VERT.
�--.-11---sYsTEM
I
200V
MEG
200V
T -
T
TO HORIZ
SYSTEM
Figure 8-A typical sync separator system
3.3
K
200V
. ture is completely out of sync vertically and horizontally and we wish to
.check out these stages to determine if the trouble lies here.
As a first step, connect the Television Analyst to the receiver so that an
image appears on the screen. The point of signal injection may be at the
19
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