[TechAssist] Symphonic SC313 Combo Service Manual need explanation ?
- From: Randy Evans <tvsvc2000@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 8 Sep 2004 09:45:34 -0700 (PDT)
In the Power Supply Troubleshooting sections of their Service Manuals, they
tell you to connect your Scope Probes to two terminals of T601, the Switching
Transformer. In almost every Service Manual, they tell you to connect it to
"Pins that don't even exist" on the transformer.
What I need to know is: What Winding are the talking about?
Positive Probe to ?? Negative Probe to ??
I Copied and Pasted an example from a Symphonic SC313 manual below,
although it is in their other combo Service Manuals as well.
Thanks,
Randy J. Evans
VCR SERVICE
Delta, Ohio 43515
tvsvc2000@xxxxxxxxx
13" COLOR TV/VCR COMBINATION
SC313C 6313CC EWC1302
Page 1-8-15
Power Supply Trouble Shooting Guide
---------------------------------------
The transformer of the power
supply makes a higher sound
or the oscillation wave form is
abnormal.
(E.g. intermittent oscillation)
Connect the positive probe of
oscilloscope to the pin 16 of
T601, then connect the negative
probe to the pin 12. Observe the
waveform and check to see if
the waveform is out of limit of
value shown in Fig.1.
---------------------------
Voltage approx. 5Vp-p
---------------------------------
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