How to troubleshoot 3 times blink codes - Sony KDL32 W700B LCD TV – It’s Communication error or Audio error - KDL Series TVs

Standby LED blink three times – Audio Error or Communication error.  Troubleshooting details

Applicable to Sony:
KDL-32W700B RM-YD103 US / Canada
KDL-32W700B RM-YD103 Mexico / Latin America
KDL-42W700B RM-YD103 US / Canada
KDL-42W800B RM-YD103 Mexico / Latin America
KDL-42W805B RM-YD099 Brazil
KDL-50W700B RM-YD103 US / Canada
KDL-50W790B RM-YD102 US / Canada
KDL-50W800B RM-YD102 US / Canada
KDL-50W800B RM-YD102 Mexico / Latin America
KDL-50W805B RM-YD099 Argentina
KDL-50W805B RM-YD099 Brazil
KDL-50W805B RM-YD099 Chile / Peru / Ecuador
KDL-50W807B RM-YD099 Colombia
KDL-55W700B RM-YD103 US / Canada
KDL-55W790B RM-YD102 US / Canada
KDL-55W800B RM-YD102 US / Canada
KDL-55W800B RM-YD102 Mexico / Latin America
KDL-55W805B RM-YD099 Brazil
KDL-55W805B RM-YD099 Chile / Peru
KDL-55W807B RM-YD099 Colombia

These are the procedures that we do follow to troubleshoot the above mentioned Sony sets; in our service department. Please go through it.  You too can rectify the fault of your Sony sets of above models. I'm sure. [Click on the pictures to zoom in]

LED BLINKING: 3X DC ALERT & COMMUNICATION ERROR

LED BLINKING: 3X(AUDIO ERROR) - BAX-L(HE-L,HM,HE-H) BOARD ONLY

More blinking code details will follow by next few posts

Lenovo 9220-HB1 - How to enter service mode – power and inverter schematic – 20 inch LCD Color Monitor

Service mode / Factory mode:

* Turn 'ON' the power.
* Press the MENU button; and pull out the power cord; and then plug the power cord again. 
* The the factory OSD will be at the left top of the panel.

* Turn the Power-button 'OFF' to quit from factory mode.

White- Balance, Luminance Adjustment

Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment.
1. How to do the Chroma-7120 MEM. Channel setting
A. Reference to chroma 7120 user guide
B. Use “SC” key and “NEXT” key to modify x, y, Y value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (7800 color):
7800 color temp. parameter is x = 296±18, y = 311±18, Y = 180 cd/m2 ,
B. MEM.CHANNEL 4 (6500 color):
6500 color temp. parameter is x = 313±18, y = 329±18, Y =180 cd/m2
3. Enter into factory mode of 9220-HB1. 

4. Turn on power, press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.

Set the Contrast to 50; Adjust the Brightness to 80.

5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust 7800 color-temperature
1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM. Channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 296±18, y = 311±18, Y = 180 cd/m2
4. Adjust the RED of color1 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2

B. Adjust 6500 color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 313±18, y = 329±18, Y =180 cd/m2
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2
C. Turn the Power-button off to quit from factory mode.

SMPS Circuit diagram

Inverter

Click on the schematics to magnify

Power amplifier circuits – 100W – 200W and 325W – used power transistors KSC5200-KSA1943 – TIP41-TIP42

KSC5200 – KSA1943 # 325Watts RMS

TIP41 – TIP42 # 100 and 200Watts RMS

Circuit diagrams and – C5200 and A1943 datasheet

C5200 datasheet

C1943 datasheet

Click on the pictures to zoom in

Samsung MX F630 – Power Amplifier and SMPS circuit diagram

TAS5342ADDV – STR2A153D

Audio output

SMPS

Power

Click on the schematics to magnify

EBY61412701 – LG AV RECEIVER SYSTEM SMPS CIRCUIT DIAGRAM

Used components - UC3844 – SPA11N80C3(FET) – STR-A6053(SMPS drive IC)

Circuit diagram

Click on the pictures to zoom in

TX L42U10E Panasonic LCD TV – Service mode – self check – LED blinking error codes

Service Mode Function
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Menu
How to enter SERVICE
While pressing (-/v) button on TV unit, press (0) on the remote control for 3 times within 2 seconds.
To exit from Service mode, press the exit button on remote control.

Key Command
• Press the 3/4 button to change the adjustment values or function.
• Press the 1/2 button to step up/down through the functions and adjustments
• Press the numerical button VOLUME (+/-) to change option item.
• Press the OK button after each adjustment has been made to store the required values.

Self Check

Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep pressing the down (-/v) button on the TV set and press the STATUS button on the remote control. To exit Self Check, switch off the TV set at the power button.

If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K."

Power LED blinking timing chart

When abnormality has occurred the unit, the protection circuit operates and reset to the standby mode. At this time, the defective block can be identified by number of blinking of the Power LED on the front panel of the unit.

Click on the pictures to magnify

168P P5F041-W1 LG 65LB5200 PSU - U1: TEA1733; U11A: FSFR1600XSL; U13: FAN7930B

LG 65LB5200 PSU - Schematic

Circuit diagram (Click on the schematics to zoom in)

EAY62830901 – EAX64881301 - LGP32 13PL2 - LED TV PSU Schematic

LG LED TV PSU, EAY62830901, PLDC-L231A: IC101 SSC1S311A  IC501 ICE3BR4765JZ  IC801 BD9483

Circuit diagram  [Click on the circuit diagrams to magnify]

LG P42-08H LED TV Power board – EAY4050520 - EAX40157601 – EAX4015760 – Circuit diagram

Components: U102: NCP1396ADR2G; U500: NCP1207ADR2G; U600: SG6961SZ

LG EAY62512702 SMPS Circuit diagram – Used with LG47LM8600 – LG47LM6700 LED TVs

LG EAY62512702 PLDF-L101B  – EAX64744101 – LG47LM8600 – LG47LM6700.  Used ICs: IC101 L6599AD - IC251 UC2843BD1 - IC501 STR-A6059H - IC601 HS01G

Model name - LG 4247H-12LPB-3P 
* Short circuit protection between different output terminals is not considered.
* Trip point for over voltage indicates the operating point when the output voltage slowly increases.
* The conditions of Over Current measurement Multi output (3.5V,12V,24V) is nominal load state except an over current measurement.

Sound Noise Characteristics.
PSU Noise Specification
22.5 dB(a) / 20.u Pa 2.0E-5 Pa
1/1 octave, A-weighting, to 1khz ~ 16khz Total overall
Measure Location : Anechoic Room
Measure Condition : At a distance of 60cm mic
Full white pattern, at AC 110V/220V
The max specification
(measure 3 points, at PSU center and left & right on the side)

Schematic [Click on the schematics to magnify]

PWB-Foil side

Connector Specification