SONY KDL-32BX350 - SONY KDL-40BX450
STANDBY LED FLASHING AND SERVICE MODE
SELF DIAGNOSIS
If an error occurs, the STANDBY LED will
automatically begin to flash. The number of times the LED flashes translates to
a probable source of the problem. A definition of the STANDBY LED flash
indicators is listed in the instruction manual for the user’s knowledge and
reference. If an error symptom cannot be reproduced, the remote commander can
be used to review the failure occurrence data stored in memory to reveal past
problems and how often these problems occur.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas. Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred .
When an error occurs, the STANDBY LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas. Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred .
STANDBY LED FLASHING CODES
|
STBY
LED
Flash time
|
Service
menu Item nam (Screen Display)
|
Diagnostic
Item Description
|
|
2
|
MAIN_POWER
|
Main
Power Over Voltage Protection
|
|
3
|
DC_ALERT1
|
DC_ALERT
|
|
AUDIO_PROT
|
Audio
Abnormal Detection
|
|
|
4
|
BALANCER_ERR
|
Balancer
Error
|
|
5
|
TCON_ERR
|
Detect
TCON_RDY
|
|
PANEL_ID__NVM_ERR
|
Panel
ID NVM Error
|
|
|
6
|
BACKLIGHT_ERR
|
Back
Light Error (Panel Inverter)
|
|
7
|
TEMP_ERR
|
Therm
al Error
|
SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for
confirmation on the screen:
HOW TO ENTER TO SELF DIAGNOSTICS
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for
confirmation on the screen:
HOW TO ENTER TO SELF DIAGNOSTICS
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below
INFORMATION >DIGIT 5 > VOLUME DOWN > POWER ON
Since the diagnostic results displayed on the
screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.
KDL-32BX350
REAR COVER SCREW POSITIONS
REAR COVER SCREW POSITIONS
KDL-40BX450
REAR COVER SCREW POSITIONS
REAR COVER SCREW POSITIONS
HOW TO ENTERING SERVICE MODE
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode
INFORMATION > DIGIT 5 > VOLUME UP > POWER ON
SONY TV REPAIRING TIPS
SONY KV32S40
PROBLEM
A.C Hum
KV32S40 serial 9028282 that has a low level audio
hum in the video input or tuner mode. Looked in the FPR on web site but could
fine nothing on the subject. The hum is at 60 Hertz.
SOLUTION
The hum is a result of magnetic flux from the
vertical deflection yoke. The 60 hz is radiating into the low level audio
circuits through inductive pick up from lead dress and ground loops. To minimize
these Remove JW086 and JW1007.Add 22AWG wire from JW270 to ground side of R477.
This wire should be on the top side of the A-board and routed to following the
audio signal lines from IC1401
SONY KV32V25
PROBLEM
VERTICAL
Unit has an arcing inside the flyback transformer.
Replaced the transformer the unit has a bright band at the top of the screen.
Replaced the jungle "IC without effecting the symptom.
SOLUTION
Its noticed the +15 volt source was lower than
expected. It was only 10 volts. It is not unusual. The voltage is normally 12
volts. What missing is the -15. This voltage must be there in order for the set
to have any vertical sweep. D530 was shorted and open R536 the 0.47 ohm current
