SONY KDL-26S4000 KDL-32S4000 KDL-37S4000 SMPS SCHEMATIC – SERVICE MODE and ADJUSTMENTS

SONY 26inch 32inch and 37inch LCD TV – Power Supply Circuit Diagram – LED BLINKING CODES

LED BLINKING CODES

The identification of errors within the SE2AG chassis is triggered in one of two ways :-

 1: Busy or

 2: Device failure to respond to IIC. 

In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted).

SERVICE MODE – ADJUSTMENTS

Service adjustments to this model can be performed using the supplied remote commander RM-ED009.

Turn on the power to the TV set and enter into the stand-by mode.
Press the following sequence of buttons on the remote commander.

INFO+ > 5 > Volume+ > Power

‘TT—’ will appear in the upper right corner of the screen.
Other status information will also be displayed.

Press ‘MENU’ on the remote commander to obtain the following menu on the screen.

Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.
Press the right arrow button to enter into the required menu item.
Press the ‘Menu’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed.

[After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON again.]

DEFAULT DATA VALUES

TT mode is available by setting the TV for operation in Service Mode , OSD ‘TT’ appears. The functions described below are available by selecting the two numbers. To release the ‘Test mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by mode. In ‘TT Menu’ mode, it is possible to remove the Menu from the screen by pressing the Speaker Off button once. Pressing the Speaker OFF button a second time will cause the Menu to reappear. The function is kept even when the menu is not displayed on screen.

KEY

1. Panel size configuration. Changed by TT61...TT68.
2. D/A: D is shown when Digital mode is enabled; A is shown when Analogue mode is enabled. Changed by TT53.
3. TT-- Command prompt.
4. ECS/---: ECS enabled/disabled (TT31).
5. CBA/--: CBA is shown when the TV set is in CBA mode (This mode is available from Factory mode TT19). Changed by TT27.
6. Norm/Fact: Normal or Factory mode. Changed by TT19.
7. DDC/---: DDC enabled/disabled. Changed by TT74.
8. 3/2/1/0: 3, 2, 1, or 0 HDMI inputs toggle. Changed by TT73.
9. E/-: E is shown when EDID WP is enabled; - is shown otherwise. Changed by TT33.
10. N/A: Previously used to indicate Monitor, Hotel, or Otrum mode is enabled.
11. C/-: C (Default value) is shown when MSP Auto Carrier Mute function is enabled; - is shown otherwise. Changed by TT57.
12. M/A: M (Default value) is shown when AM sound is demodulated in MSP; A is shown when AFRIC demodulator is used. Changed by TT72.
13. N/A: Previously used to indicate Clk enabled.
14. T/-: T is shown when digital test is enabled; - is shown otherwise. Changed by TT39.
15. W/-: W is shown when watchdog is enabled; - is shown otherwise. Changed by TT54.
16. C/-: C is shown when chip select is enabled; - is shown instead. This mode is only available in factory mode. Changed by TT58.
17. V/-: V is shown when visual I2C is enabled; - is shown otherwise. Changed by TT59.
18. D/-: D is shown when audio delay is enabled; - is shown otherwise. Changed by TT55.
19. K/-: K is shown when spread spectrum is enabled; - is shown otherwise. Changed by TT94.
20. B/-: B is shown for BRAVIA models; -is shown otherwise. This mode is only available in factory mode. Changed by TT56.
21. T/-: T is shown if temperature algorithm is enabled; - is shown otherwise. Changed by TT52.
22. L/-: L is shown when HDMI log is enabled; - is shown otherwise. Changed by TT34.
23. X/-: X is shown when teletext is centered (Default value); - is shown otherwise. Changed by TT14.
24. B/-: B is shown when SuperBlack algorithm is enabled; - is shown otherwise. Changed by TT51.
25. D/-: D is shown when Panel detection is enabled; - is shown otherwise. Changed by TT21.
26. G/-: G is shown when Gamma correction is enabled; - is shown otherwise. Changed by TT36.

SMPS SCHEMATICS [37 inch]

SMPS SCHEMATIC [26 & 32 inch]

LG POWER SUPPLY - EAY62810801 - SCHEMATIC - LED LCD TV

LGP4750-13PL2 LCD TV Power Supply Circuit Diagram - EAY62810801

Part name: LGP4750-13PL2

LGE Part No: EAY62810801

PROTECTION

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.
SCHEMATICS

P-201 VOLTAGES 

P-801 FUNCTION

JBL- ARC SUB10 and JBL- DS-10 Powered Subwoofer – TROUBLESHOOTING – SCHEMATIC

Troubleshooting – Exploded view – Circuit Diagram - JBL- ARC SUB10 and JBL- DS-10 Powered Subwoofer

Amplifier Power (RMS)  100 watts
Driver 10" . . . . . . . . . . . .. High-Polymer Laminate
Inputs . . . . . . . . . . . . . . . . Line Level and Speaker Level
Outputs . . . . . . . . . . . . . .  Speaker Level (only active if Speaker Level Inputs are used)
High-Pass Frequency . . . High-Pass filter at 180Hz (only active if Speaker Level Inputs are used)
Frequency Response . . . 50Hz - 150Hz (determined by crossover setting)

In the event you receive a ARC SUB10 / DS-10 Subwoofer with the complaints “Dead, or No Output, or Motor boating (Oscillation)”, perform the steps listed below first before any further troubleshooting takes place:

1 Unplug all cables; lay the sub-woofer on a padded surface.

2 Remove all Philips screws around the outer perimeter of the amplifier face-plate.

3 Remove amplifier assembly; you should be able to remove the amplifier far enough out of the cabinet to service it without removing the woofer wires.

4 Locate the Power Amp Module; it is the large gray component with a metal case. On the Solder side of the circuit board are the 28 Solder connections to the Module.

5 Regardless of whether you can visibly see breaks in any of the connections or not, carefully re-Solder all 28 pin connections, adding 60/40 rosin core Solder. Take care not “bridge” any connections on the board with Solder.

6 Inspect the Solder joints to the main filter capacitors C1 and C2 on the main PCB and re-Solder if needed.

7 Replace the amplifier assembly back into the cabinet; replace the screws.

8 Test the unit by applying a signal from a music source, adjust the volume to a moderate level and confirm the original problem has been corrected.

EXPLODED VIEW

SCHEMATIC & AMP MODULE CONNECTION DETAILS

TROUBLESHOOTING

THE FOLLOWING PROCEDURES MUST BE FOLLOWED WHEN INSTALLING NEW S53AMI/S64AMI AMP MODULES
FAILURE TO FOLLOW ONE OR MORE OF THESE STEPS MAY RESULT IN THE INSTANT DESTRUCTION OF THE MODULE WHEN POWERED UP.

* Align white indent marker on Amp Module with indent marker on main PCB; alternately observe position of label on the top of the module; incorrectly replacing the Module 180 in the PCB slot will result in its destruction.

* All AC powered test instruments (meters, oscilloscopes, etc.) must have a floating ground, i.e. be connected to an isolation transformer.
* Align and position the Amp Module before soldering.
* Attach the amp Module with the mounting screws or powering up.
Use only rosin-core or non-acid core solder; thoroughly de-flux the surfaces after soldering.

> Check fuse F1. If blown visually check transformer for discoloration, and large capacitors (C1, C2) for bulges or venting. Check for shorts with an Ohmmeter, (see schematic).

> With ohmmeter, verify voice coil of woofer is 3.9 ohms, and winding of transformer for continuity.

> Examine board and wiring for obvious damage, broken or poorly soldered connections, or discoloration.

> Repair or replace items identified above.

> For live power testing, attach a 4 ohm 100 watt resistor to the output wires.

> If the LED is not on, check for fuse continuity and then for cold solder joints on CMC1 and bridge diode.

> With a signal present at the input, the output to the power amp is at pin-8 of U1. If the signal is not present at pin 8, there is a problem with preamp section. Most likely, a cold solder joint will be the problem. Track back the signal path to locate problem.

> If signal present at pin 8, but still no sound, check for cold solder joints on all power resistors, R4a and R4b and the the power amp module. If C24 is blown, C6 is not soldered or is defective. Check the signal at R2. On the down signal side, the voltage signal should be very small. If signal is similar on both sides of R2, the amp module is likely defective.

> If you hear a mechanical clicking noise from the amp module, this indicates that the short circuit protection has been engaged. Check that Q3, Q4 and Q5 are soldered correctly. Also check that Q3 is not shorted to power amp case.

If you have to replace the power module, be very, very patient with the solder removal from this single sided PCB. COMPLETELY REMOVE SOLDER BEFORE TRYING TO REMOVE THE MODULE.  Crossover pot Gnd wire from PCB pad to POT barrel. (Only physical contact required between pot body and face-plate).

KONKA LE3250 – KONKA LE4050 LED LCD TV - SMPS - AUDIO AMPLIFIER - BACK-LIGHT SCHEMATIC

SMPS - Mstar Audio Amplifier - Back-light Inverter Circuit Diagram for Konka LE3250 – KONKA LE4050

Used ICs: FSGM300 – FAN7530 – FSFR1700 - MSH9000

Mstar AUDIO AMPLIFIER SCHEMATIC

SMPS & BACK-LIGHT INVERTER SCHEMATICS

Click on the schematics to Magnify

PHILCO PH32S61DG – LED LCD TV – SMPS – LED DRIVER and AUDIO AMPLIFIER CIRCUIT DIAGRAM

LED driver – Audio Amplifier & SMPS schematic – Philco PH32S61 LED-LCD TV

SMPS SCHEMATIC

LED DRIVER SCHEMATIC

AUDIO AMPLIFIER SCHEMATIC

CLICK ON THE SCHEMATICS TO ZOOM IN

PANASONIC TC-P50G10 -Line Faults - POWER LED BLINKING CODES – HOTEL MODE – SERVICE MODE - 50 inch Class 1080p Plasma HDTV

How to enter service mode - hotel mode - Power LED blinking chart - Line faults -  PANASONIC TC-P50G10

 50 inch Class 1080p Plasma HDTV

POWER LED BLINKING TIMING CHART

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

Check of the IIC bus lines: How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.

Hotel mode
Purpose: To restrict a function for hotels.
Access command to the Hotel mode setup menu
In order to display the Hotel mode setup menu,  enter the following command (within 2 second).
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times)
Then, the Hotel mode setup menu is displayed.

HOTEL MODE EXPLANATION

SERVICE TOOL MODE

1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.

Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].

POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for (3sec).
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.

Exit: Disconnect the AC cord from wall outlet.

LINE FAULTS & Defective Boards

Local screen failure & the suspected boards [line faults].  Plasma display may have local area failure on the screen.

JBL MS-A5001 - 1 CHANNEL Digital Signal Processing Amplifier – Wiring Diagram – Power and Amplifier section Circuit Diagram

Digital Signal Processing Amplifier JBL MS A5001 – Wiring Diagram – Power and Amplifier section Schematic - Exploded view & Parts List

Although some typical connections and controls are shown, JBL MS Series amplifiers include many features and digital controls not found on conventional car audio amplifiers.  Also, the setup (or testing) procedure for MS Series amplifiers is different (more complicated) from that of conventional car audio amplifiers.

SYSTEM WIRING DIAGRAMS

 Inputs can be channel-1 only or both channel 1 and 2, depending upon how the pass through output is to be used.  In this configuration, a single sub-woofer is connected at one of the MS-A5001 outputs.  A 4-ohm or 2-ohm sub-woofer can be used.

In this configuration, sub-woofers are connected in parallel at the dual mono input of MS-A5001.  Four ohm or eight ohm sub-woofers should be used.

Inputs can be channel 1 only or both channel 1 and 2, depending upon how the pass-through output is to be used.  One dual voice coil (DVC) sub-woofer is shown wired in series.  Do not have less than a 2ohm load at the amplifier.

POWER AMPLIFIER SCHEMATIC

POWER SUPPLY

CLICK ON THE PICTURES TO MAGNIFY

SPECIFICATIONS

Output Power: 500W RMS x 1 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 500W RMS x 1 channels @ 2 ohms; ≤1% THD + N
Signal-to-noise ratio: 80dBA (reference 1W into 4 ohms)
106dBA (reference rated power into 4 ohms)
Total Peak power: 500W
Frequency response: 20Hz – 270Hz (–3dB)
THD+N 1KHz LPF=22KHz < 1.0 % (rated power @ 4 ohms)
Input Impedance 10kΩ (Hi2 = 120)
Maximum input signal: 20.0V
Maximum sensitivity: 100mV
Bass Boost @ 80Hz 10dB
DC Offset <50mV
Idle Current @ 4 ohms <1.5A
Max Current Draw ≤45A
Remote Operating Voltage 5-16VDC
Turn-on delay time 1 sec
Circuit Protection Temp (85±5C), Short circuit, Operating voltage range (9-16V)
Dimensions: 7-3/16" x 8-1/4" x 2-3/4" 183mm x 210mm x 70mm
Fuse: 2 x 40A

EXPLODED VIEW

ViewSonic N2011 20 Inch LCD TV – Circuit Diagram – Password Change

Backlight inverter – SMPS – Audio Output & Audio Decoder  Schematic – ViewSonic N2011 LCD TV

To enable V-Chip password, input 8792 if you have not assigned the special password.

BACK-LIGHT INVERTER SCHEMATIC

VIN : 13V+/-10%
PWM : 0V---3.3V, 100%---40% PWM pulse. 100% maximum brightness; 40% minimum brightness
ON: 0V---1.0V, OFF; 2.0V---5.0V, Enable

SMPS SCHEMATIC

AUDIO DECODER SCHEMATIC

AUDIO OUTPUT SCHEMATIC

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