Read Panasonic TX-28PG40D / TX-28PG40F Service Manual online
SECAM L/L’, B/G, D/K
NTSC (AV only)
CATV S21-S41 (HYPERBAND)
40,4MHz, 32,4MHz (A2 STEREO)
33,05MHz, 34,05MHz (NICAM)
32,66MHz, 32,4MHz (CZECH STEREO)
34,5MHz, 34,65MHz (SECAM)
AUDIO MONITOR OUT
2 x R6 (UM3) Batteries
Weights and dimensions shown are approximate.
the EURO-7 Technical guide.
all parts that have been overheated or damaged by
the short circuit.
and isolation R-C combinations are correctly
without the rear cover involves the danger of a shock
hazard from the receiver power supply. Servicing
should not be attempted by anyone who is not
familiar with the precautions necessary when working
on high voltage equipment. Always discharge the
anode of the tube.
to shock hazard.
3. Measure the resistance value with an ohmmeter,
metallic cabinet part on the receiver, such as screw
heads, aerials, connectors, control shafts etc. When
the exposed metallic part has a return path to the
chassis, the reading should be between 4M ohm and
20M ohm. When the exposed metal does not have a
return path to the chassis, the reading must be
such as a water pipe.
specified, there is a possibility of a shock hazard, and
the receiver should be repaired and rechecked before
it is returned to the customer.
calibrated high voltage meter.
2. Measure the high voltage. The meter should indicate.
service and correction is required to prevent the
possibility of premature component failure.
5. Set the controls :-
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Sub brightness mode.
value using the "Yellow" and "Blue" buttons until the black level is 170V ± 5V,
press "STR" to store the value. Remove the oscilloscope.
Select Highlight/Lowlight mode press "5" to collapse the screen and adjust the
screen “VR” until the display is just visible, press "5" to return to service mode.
Using the "Yellow" and "Blue" buttons adjust until optimum picture white
balance is achieved, press "STR" to store the value. Select Sub Brightness
mode and adjust until optimum picture brightness is achieved.
To get into Self-Check mode press the down (-/v) button on the customer controls at the front of the TV set, at the same time
pressing the STATUS button on the remote control, and the screen will show: -
OPTION 11 :
OPTION 12 :
OPTION 13 :