Philips 43PFT4001/60, Service Manual

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Document: After-sales Maintenance Service Manual No.: T7** Version: 3.0 Effective from: March15th, 2010
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1
After-sales Maintenance Service Manual
Date: March 2010
1.
1.
1. 1. No
No
No No power
power
power power
2.
2. 2.
2. Without
Without Without
Without light
light light
light
Check 220V power supply voltage
and the contact of power socket
Check AC
（
220V
）
voltage and the
contact of CN101 socket.
Check +5V and +12V output from
embedded power supply for abnormity
Check +5V and +12V on
main board for abnormity
Replace power cord or power
socket
Check for open-loop of fuse,
or replace main board
Check main board of power supply for
looseness, open-loop and poor contact
YES NO
YES NO
YES
NO
When the indicator is on but there is no display, check remote control for
power-off, minimum brightness, contrast ratio, check high-voltage switchboard
controlled by main board for abnormity
Check the fuse on high-voltage board for
the supply of 12V
Check each triode of control part for
abnormity or replace main board
Replace high-voltage switchboard Check fuse
YES
YES
NO
NO
Abnormal output v5V and +12V from
embedded power supply, replace embedded
power supply with the same model
Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting Procedure
Procedure Procedure
Procedure
4.
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