Repair Flow Chart - Philips 170B4BB Service Manual

48 170B4&S4
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Repair Flow Chart (Continued)
12V DC
Inverter panel
625~765Vrms
Fluorescent
Lamp
No power
(power indicator off)
Check
12V/3.3V/5V DC
Yes
Check
control panel
Yes
Check Main panel
AC IN
Power supply
board
3.3V/5V DC
Main panel
LCD panel
No
Check control
wires
Check Main panel
12V DC