Circuit Descriptions
7.
7.2
Power Supply
7.2.1
Power Supply Unit
Before checking other parts first check whether fuse on the
PSU is not broken. Always replace a defective fuse with one
with the correct specifications! This part is available in the
regular market.
Consult the Philips Service web portal for the order codes of the
boards.
In this manual, no detailed information is available because of
design protection issues.
The output voltages to the chassis are:
•
+5V / +3V3 - STANDBY (Stand-by mode only)
•
+12V (on-mode)
•
+24V for audio circuit
Figure 7-6 Thriller power board management
Figure 7-7 Berlinale xxPFL56xx/xx power board management
Bridge
Diode
PFC
Control
Inverter
Control
Inverter
Transformer
EMI
FILTER
AC Inlet
PWM
Control
Power
Transformer
Standby
Power
Standby
Transformer
Lamp R
Lamp L
24V
Audio power
12V
Panel power
5V SB
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Bridge Diode
PWM IC
TNY274
Standby
Transformer
+3.3 V
+LED
Line filter
AC input
LLC IC
SSC9512S
Boost
Main
Transformer
LED control
IC 1
LED control
IC 2
LED
String × 4
LED
String × 6
+24 V
+12 V
+24 Vsnd
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