Friday, December 04, 2015

Line Fault due to Faulty LCD Display Panel - Cracked LCD Display Panel ...


LG32LD310.  32" LCD TV
  See this video clip.  Although the 1/6 part of the screen at the top right displays 'Grains' (Nose signal); all the other part have vertical lines. There is a crack at the top left side of the screen, so there is no display at all.  The fault here is due the defect to the LCD panel itself, as it is cracked.
  There is an other possibility too, for this kind of fault.  This type of fault can be due to a defective T'Con board. So, when you see this kind of fault to LCD TVs; (irrespective of its Brand and Screen size); must first check and detect the part; which causes the fault, before replacing the component/s. 


AOC LCD TV - CPT CLAA150XG07 – BACK-LIGHT INVERTER CIRCUIT DIAGRAM

ICs Used: TL1451ACNSR or BA9741F – TL5001CD
FOR CPT CLAA150XG 07 INVERTER
FOR HANNSTAR HSD150SX83 .INVERTER - IDPC5425A1
INPC7425A1
INPC560A3
CLICK ON THE PICTURES TO ZOOM IN

Thursday, December 03, 2015

LG 32LD310 – 32 Inch LCD TV – DISPLAY PANEL CRACKED – From My Service Table Today

Abnormal Display along with Vertical Line Fault. LG 32LD310 31 inch LCD TV
 Received this LCD TV for repair today.  The party said that, it will work, but the left side of the screen won’t display any picture, while the right side is OK.  I switched ON the set in presence of the party.  The set did display a strange screen, as you can see here.
Some vertical lines along with faint video signal.  See the display.
I did notice that; there is a small crack at the top left side of the screen.  Pointed it out to party. It was at the left side of the screen, just below the upper border.  By gently pressing on that side; by bare fingers; some strange pattern began to display.  See the change while I press over the cracked part.
I did press at the right side of the display.  No such pattern.
Crack confirmed.  No other remedy than replace the display panel.  Party too did understand, and gave me work order to replace the display panel.
Here the set has vertical line fault too.  If it is confirmed after the replacement of new display panel, the T’Con board too should have to be replaced.  This fact too have been informed to party.
I've uploaded two clippings by You Tube.  
See it here =► Touch test
Line Fault due to defective display panel =► Line Fault - Defective LCD Panel

Wednesday, December 02, 2015

Fisher and Paykel SMARTDRIVE WASHING MACHINE – DATA DOWNLOAD – OPTION ADJUSTMENT – DIAGNOSTIC MODE

Data Download
Enter diagnostic mode. Press START/PAUSE. The top How Dirty LED will now be on. Place the download pen over this LED and follow the instructions supplied with the data download program.
DIAGNOSTIC MODE
To enter the Diagnostic Mode, turn the power on at the power point and off at the console. Press and hold the LIFECYCLES button (SPECIAL button on Phase 5) and then the POWER button. The SmartDrive will give 2 short beeps and the LCD screen will go blank.
[Make sure that the buttons are released after the beeps, or the SmartDrive will turn itself out of the diagnostic mode.]
Data Display
To enter the DATA DISPLAY screens, push the LIFECYCLES button again (SPECIAL button on Phase 5). This will enable the out of balance switch to be tested, as well as giving access to the Detailed Fault Codes and User Warning Faults. One of three displays will appear in the screen. Use the OPTIONS up or down buttons to the bottom of the display screen to toggle between these displays (use the buttons to the right of the display on Phase 5).
The Warning Status screen will display the last USER WARNING FAULT that occurred and will show at what part of the cycle it occurred.
The User Warning Faults are:
No Taps
Overloaded
Out Of Balance
Over Suds or water still in the SmartDrive during spin
No Hot Water
No Cold Water
Agitate Overloaded
On Phase 5, the Machine Status screen displays the thermistor temperature and the status of the out of balance switch and the lid switch. It also displays the Size setting of the SmartDrive and the water level.
On Phase 6, the Machine Status screen displays the status of the diverter and the out of balance switch. It also displays the Size setting of the SmartDrive and the thermistor temperature. 
HVDC is for on line testing in the factory.
Target temp is the temperature selected.
T is the actual temp of the inlet chamber water.
The Fault Status screen will display a code for the last fault that has occurred in the SmartDrive. It will
also display how many cycles ago the fault occurred and at what part of the cycle.
The fault code number can now be checked in the detail fault codes, to ascertain what repairs may be necessary.
Lid Switch Test (Phase 5 Only)
Enter the Diagnostic Mode and bring up the Machine Status display.  Activating the lid switch by opening and closing the lid will change the display between “Lid closed” and “Lid Open”.
Drain Pump Test
On IW models, the pump test is activated by the FABRIC CARE button when in diagnostics.
Water Valve Test
When in diagnostic mode on IW SmartDrives, pressing the HOW DIRTY down button will turn the cold water valve on. Pressing the HOW DIRTY up button will turn the hot water valve on. The buttons have to be held down to keep the valves activated.
Restart Feature
IW Restart setting can be accessed when in diagnostic mode. Pressing the OPTIONS button will bring up the CONTROL OPTION screen. The LCD screen will display the following:
The SmartDrive leaves the factory with the RESTART set to the ON position, which is indicated in the
screen by the word RESTART highlighted. To turn the RESTART feature OFF, push the Adjust button
(Phase 5, push the button alongside the word). This will remove the highlight from the word RESTART. When the SmartDrive is being serviced, it is more convenient to turn the RESTART feature OFF. This will allow any fault in the system to show up immediately.
With the RESTART feature on:
1. If a fault occurs in the SmartDrive, the diagnostic system will detect it.  However, instead of displaying a fault code immediately, the SmartDrive will try to RESTART.
2. If the fault was only of temporary nature, the SmartDrive will restart and finish the cycle.
3. If there is a continuous fault the SmartDrive will try to RESTART a number of times. This process could take up to 8 minutes depending on the type of fault. After this, if the SmartDrive still cannot restart, the fault code is displayed and the SmartDrive will beep continuously.
Whether or not the RESTART feature is on is indicated during normal use of the SmartDrive when power is on at the power point and off at the console as follows:
1. If none of the 5 green HOW DIRTY LEDs are on, the RESTART feature is on.
2. If the 5 green HOW DIRTY LEDs are flashing, the RESTART feature is off.
NOTE: This feature is designed as a service aid only and should be left ON in the customer’s home. To return to normal operation, and to reset the RESTART feature to the factory setting, switch the smartDrive off at the wall or disconnect from the mains supply.
Recycle Feature
In the Control Options mode (as for setting the RESTART feature), pushing the ADJUST button (Phase 5, push the button alongside the word) to highlight the word RECYCLE will toggle this feature on and off. At the end of servicing, the SmartDrive may require an extended test where the SmartDrive can be left to complete a number of wash cycles. By turning on the RECYCLE feature the SmartDrive will continuously repeat the wash cycle until the RECYCLE feature is turned off.
Whether or not the RECYCLE feature is on is indicated during normal use of the SmartDrive when power is on at the power point and off at the console as follows:
1. If none of the FABRIC CARE LEDs are on, the recycle feature is off.
2. If all of the FABRIC CARE LEDs flash, the recycle feature is on.
NOTE: This feature is designed as a service aid only and should be OFF in the customer’s home. To return to normal operation, and to return the recycle feature to the factory setting, switch the SmartDrive off at the wall or disconnect from the mains supply.
Hot Bowl Flag
If the SmartDrive has been filled with the hot water valve utilised (ie. warm or hot fill) and has not had a cold rinse, the electronics will not allow the SmartDrive to spin up to its full speed of 1000 RPM.  It will only allow the spin speed to reach 700 RPM.
To remove this flag, enter the Control Option mode and push the ADJUST button (Phase 5, push the button alongside the word) to take the black shading out of the box Hot Bowl Flag, or put the SmartDrive through a complete final rinse.
NOTE: The drain pump test, water valve test, restart, recycle and hot bowl flag features can be accessed from any level in the diagnostic mode.
Other Option Adjustments
Phase 5
Turn the machine on.
Press and hold the OPTIONS button for 4 seconds.
The Adjust Options Menu will be displayed.
Push the small button next to the option to be adjusted. The display will change to the choices available for that option.
To set the option, push the small button next to it. The display screen will
highlight the selection made before returning to the main screen.
Phase 6:
Turn the machine on.
Press and hold the OPTIONS UP button for 3 seconds until a beep is heard.
The Adjust Options Menu will be displayed.
Press the OPTIONS UP button to scroll through the options to the option to be adjusted.
Press the ADJUST button to set the option.
Press the HOME button to return to the main screen.
The options that can be adjusted are:
Wash Temperature. On Phase 5 each increment is approximately 10C, while on Phase 6 each increments is approximately 20C.
Auto Water Level. 
This increases or decreases the fill level that auto will detect.
Default Rinse. The default rinse can be set to either spray and deep, single deep, double deep or shower.
Creasable Spin Speed. The spin speed for the Creasables cycle can be set at either slow (300rpm on Phase 5, 330rpm on Phase 6) or medium (700rpm on Phase 5, 670rpm on Phase 6).
Out of Balance Recovery. The out of balance recovery action can be set to be either automatic, where the machine will fill with water and agitate to redistribute the load, or it can be turned off, where the machine will stop and beep.
End of Cycle Beeps. These can be set to zero, five or fifteen.

HOW TO UPGRADE THE FIRMWARE - DESTINATION CHANGE - TOSHIBA 32AV833G LCD Color Television

  Depending on the model, use an isolation transformer or wear suitable gloves when servicing with the power on, and disconnect the power plug to avoid electrical shock when replacing parts. In some cases, alternating current is also impressed in the chassis, so electrical shock is possible if the chassis is contacted with the power on.
FIRMWARE UPDATING PROCEDURE
> Copy a firmware BIN file to USB disk. (Root directory)
> Plug USB disk into TV USB port.
> Reboot (AC Off/On) TV to upgrade firmware automatically. During firmware upgrade, OSD will be displayed on LCD screen, and power status LED will start to blink.
> When firmware upgrade is finished, a message will be displayed on screen.
> Unplug USB disk, and turn AC Off/On to reboot TV.  [This upgrade method is available only when boot code exists in flash memory (Main Board).]
DESTINATION SETTING CHANGE
Whenever replacing the Main PCB with new one, perform this procedure.
> Press "Mute" key twice on the Remote.
> Press "Menu" button on the TV set. Then the OSD is displayed.
> Move to Tag "3" by Right/Left Arrow key on the Remote.
> Select "Model Type" cell.
> Select the appropriate model type by Right/Left Arrow key on the Remote. Model type is written on the rating label.
> Select "Reset to Def".
> Select "Yes" and press "OK" button on the Remote.

Tuesday, December 01, 2015

PANASONIC SA-HT680PL - HOW TO ENTER SERVICE MODE - ERROR CODES – ADJUSTMENTS

ERROR CODES – ADJUSTMENTS - HOW TO ENTER SERVICE MODE - FIRMWARE UPDATE - PANASONIC SA-HT680PL DVD Home Theater Sound System

PROTECTION CIRCUIT
The protection circuitry may have operated if either of the following conditions are noticed:
> No sound is heard when the power is turned on.
> Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note: When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
What’s HighMAT
Consumers worldwide are using PCs to create their own collections of music, photos and even video by burning them onto CDs.  But how these collections can be experienced across different devices can be confusing to navigate, time consuming to access for a DVD player, and be incomplete in terms of music information available to the customer.
HighMAT offers a solution to this growing consumer problem. HighMAT dramatically improves the digital media experience on consumer electronic devices by delivering a simple, standardized approach that allows consumers who have created personal collections of digital music, photography and video on their PC to:
> Create a HighMAT CD or DVD which can be easily played back on consumer electronics devices such as CD and DVD players, and car stereos.
> Move digital media files (using recordable media such as CD-R and CD-RW) between the PC and various playback devices such as CD and DVD players.
A new standard for creating personal media on consumer electronic devices, HighMAT enable easier and more seamless interoperability between Windows PCs and devices designed for your living room, or the car.
When you create your homemade CDs with software that supports HighMAT CD burning, and then play them back on a DVD player that supports HighMAT, you get better, easier navigation. You get folders you can access with a single click of your DVD player´s remote control. You can view important information about your music like full song names, artist titles, album names and genre. And you can get faster startup on your home entertainment device.  To enjoy the benefits of HighMAT, all you need is software that supports HighMAT for CD burning of music or photos, as well as a home entertainment device like a DVD player that supports HighMAT for playback. Always look for the HighMAT logo on your software or home entertainment device to ensure it supports the HighMAT experience.
Optical Pick-up Breakdown Diagnosis
The optical pick-up self-diagnosis function and tilt adjustment check function have been included in this unit. When repairing, use the following procedure for effective Self-diagnosis and tilt adjustment. Be sure to use the self-diagnosis function before replacing the optical pick-up when "NO DISC" is displayed. As a guideline, you should replace the optical pick-up when the value of the laser drive current is more than 55.
SERVICE MODE
The service modes can be activated by pressing various button combination on the player and remote control unit.
DVD Self Diagnostic Function-Error Codes
An error code will be cancelled if a power supply is turned OFF.
SERVICE TABLE-2
Pressing various button combinations on the player and remote control unit can activate the service modes.
RECOVERY AFTER THE DVD PLAYER IS REPAIRED
When FLASH ROM IC or DVD module P.C.B. is replaced, carry out the recovery processing to optimize the drive.  Playback the recovery disk to process the recovery automatically.
Recovery disc (Product number: RFKZD03R005)
Performing recovery
1. Load the recovery disc RFKZD03R005 on to the player and run it.
2. Recovery is performed automatically. When it is finished, a message appears on the screen.
3. Remove the recovery disc.
4. Turn off the power.
[This unit requires no initialization process carried out after the traditional DVD players were repaired.  When the recovery measures are taken, the customer setting will return to the factory setting as same as the procedure  described in item of "Initialization" is carried out. Write down the contents of the setting before recovery processing, and reset the player.]  To know how to initialize the set, refer service mode table-2.
FIRMWARE VERSION UPDATE OF THE DVD PLAYER
The firmware of the DVD player may be renewed to improve the quality including operability and playability to the substandard discs. Processing to optimize the drive.
> The recovery disc has also firmware version-up.
> After version-up, recovery processing is executed automatically.
> Part number of the recovery disc for version-up will be noticed when it is supplied.
Updating the firmware
1. Load the recovery disc that is supplied to the player and run it.
2. Firmware version of the player is automatically checked. Appropriate message appears whenever necessary.
3. Using remote controller´s cursor key, select whether version updating is to be done or not. (Selection of Yes/No)
4. a. If Yes is selected, version updating is performed.  b. If No is selected, only recovery is performed.
5. a. When updating is finished, remove the disc according to the message appearing on the screen.  b. Remove the disc according to the message appearing on the screen.
6. Turn off the power.
Note:  If the AC power supply is shut out during version-up due to a power failure, the version-up is improperly carried out.  In such a case, replace the FLASH ROM IC and carry out the version-up again.
OPTICAL PICK-UP ADJUSTMENTS
Before starting optical adjustment, be sure to take anti-static measures.
Optical pick-up tilt adjustment is needed after replacement of the following components.
1. Optical pick-up unit
2. Spindle motor unit
3. Optical pick-up peripheral parts (such as rail)
Notes:  Adjustment is generally unnecessary after replacing other parts of the traverse unit. However, make adjustment if there is a noticeable degradation in picture quality. Optical adjustments cannot be made inside the optical pick-up. Adjustment is generally unnecessary after replacing the traverse unit.
Optical pick-up tilt adjustment.
1. While pressing STOP button on the main unit, press "5" on the remote control unit.
2. Confirm that "J_xxx/yyy_zz" (display1/display2) is shown on the front display.  "yyy" and "zz" shown to the right have nothing to do with the jitter value. "yyy" is the error counter, while "zz" is the focus drive value.  Jitter value appears on the front display.
3. Play test disc T30 (center periphery).
4. Adjust tangential adjustment screw so that the jitter value is minimized.
5. Play test disc T30 (center periphery).
6. Adjust tilt adjustment screw 1 so that the jitter value is minimized.
7. Play test disc T30 (center periphery).
8. Adjust tilt adjustment screw 2 so that the jitter value is minimized.
9. Repeat adjusting tilt adjustment screws 1 and 2 alternately until the jitter value is minimized.
1. Make tangential adjustment first, and then make tilt adjustment.
2. Repeat adjusting two or three times to find the optimum point.
3. Finish the procedure with tilt adjustment.
Play test disc or any other disc to make sure there is no picture degradation in the inner, middle and outer peripheries, and no audio skipping. After adjustment is finished, lock each adjustment screw in position using screw lock.
Procedure for screw lock
1. After adjustment, remove top cover, tray, clamper base and traverse unit in this sequence.
2. Lay the traverse unit upside down, and fix adjustment screw with screw lock.
3. After fixing, reassemble traverse unit, clamper base, tray and top cover.

AOC L32W861 – 32 inch LCD TV – SERVICE MODE – POWER SUPPLY and AUDIO AMPLIFIER SCHEMATIC

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT HAVE HIGH VOLTAGES.  USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
SMPS (Power Supply Regulator board) - circuit diagram
AUDIO OUTPUT and HEADPHONE SOCKET
SERVICE MODE
In the TV mode adjust volume to zero, press mute key and press number key 9 > 8 > 7 > 6.
The TV will enter to factory mode (Service Mode)
Select the item of White Balance and press right key to enter it. [before to adjust the white balance, please press the factory mode OSD of “Reset” to reset all white balance factory setting.]
In the White Balance you can adjust 8 items.
1-3 items is RO, GO, BO > R, G, B Bias adjust.
4-6 items is RG, GG, BG > R, G, B Gain adjust.
7 item is Def_contrast_all_mode adjust
8 item is Def_brightness_all_mode adjust
9 item is Colortemp_all_Mode adjust
10 item is color temperature select: Cool, Normal, and Warm.
Press “Exit” button on remote control to quit from factory mode.
Only the HDMI white balance to cover the white balance of all source modes, This method is meet to the Zoran 770 software.
Do not attempt to adjust the data values in the Service Mode; without a pattern generator. 

PHILCO PMS24 – MICROWAVE OVEN – EXPLODED VIEW – CIRCUIT DIAGRAM

S210W521082GB
S210W521079GB
SEB207STB-PAOCOB (P70B20AP-ST)
SEB207STB-PAOCOS (P70B20AP-ST)

SCHEMATIC
EXPLODED VIEW
CLICK ON THE PICTURES TO ZOOM IN