LEDPlus LG 42LE5500 – How to enter the service mode, how to update the software

Firmware update, EDID download procedure: LG42LE5500 LEDPlus TV

Remote Control - AKB72914003

Power board: EAY60803101

Main board: EBU60904603

Basic Troubleshooting Steps

Define Look at the symptom carefully and determine what circuits could be causing the failure. Use your senses Sight, Smell, Touch and Hearing. Look for burned parts and check for possible overheated components. Capacitors will sometimes leak dielectric material
and give off a distinct odor. Frequency of power supplies will change with the load, or listen for relay closing etc. Observation of the front Power LED may give some clues.
Localize After carefully checking the symptom and determining the circuits to be checked and after giving a thorough examination using your senses the first check should always be the DC Supply Voltages to those circuits under test. Always confirm the supplies
are not only the proper level but be sure they are noise free. If the supplies are missing check the resistance for possible short circuits.
Isolate To further isolate the failure, check for the proper waveforms with the Oscilloscope to make a final determination of the failure. Look for correct Amplitude Phasing and Timing of the signals also check for the proper Duty Cycle of the signals. Sometimes
“glitches” or “road bumps” will be an indication of an imminent failure.
Correct The final step is to correct the problem. Be careful of ESD and make sure to check the DC Supplies for proper levels. 

To access the Service Menu.

1) You must have either Service Remote. (PART NUMBER: 105-201M or  MKJ39170828)

2) Press “In-Start”

3) A Password screen appears.

4) Enter the Password.

Note: A Password is required to enter the Service Menu. Enter; 0000
Note: If 0000 does not work use 0413.

Software Updates (New and Changed Functions)

A wireless Internet Connection will work for Automatic Software Downloads., however if there are problems completing download, a Wired Internet Connection is preferred
For network setup assistance, press the green button for the Simple Manual With Software Update Highlighted, Press Select on Remote
Continue on next page
Bring up the Customer’s Menu then Press the Red button on Remote Scroll down to item 9 Network Connections.

Automatic Internet Software Update

*Off : Automatic Software update does not work

*On : if new Software released, Software download notice appears at turn on with two choices, Yes and Remind Me Later.

Check Update version

* comparison current software version and Released software version.

Additional TV Checks can be made by Scrolling down.

Picture, Sound and Network Test.

After completion of the test, a Pop up menu is displayed with pre-loaded back ground picture.

Select NO if everything is OK.

If you select Yes; Service call number, Model name, SW version and serial No. is displayed.

Note: Confirm the “Suffix” of the model number.

If the Main board is replaced, the Model and Serial number must be reinserted into memory. See Model Number D/L.

USB Automatic Software Download

Create an LG_DTV folder on the USB Flash Drive.

2) Copy new software (xxx.epk) to "LG_DTV" folder. Make sure to have correct software file.
3) With TV turned on, insert USB flash drive.
4) You can see the message “TV Software Upgrade”

5) Cursor left and highlight "START" Button and push “Enter” button using the remote control.
6) You can see the download progress Bar.
7) Do not unplug until unit has automatically restarted.
8) When download is completed, you will see “COMPLETE”.
9) The TV will be restarted automatically.

CAUTION:
Do not remove AC power or the USB Flash Drive.
Do not turn off Power, during the upgrade process.
Software Files are now available from LGTechassist.com

Manual Software Download

Prepare the Jump Drive as described in the “USB Automatic Download” section and insert it into either of the USB ports.

Bring up the Customer’s Menu and scroll to “OPTIONS”.

Press the “FAV” key 7 times to bring up the Manual Download Screen.

Highlight the Software update file and press “SELECT” to begin the download process.

Example of files found On the Jump Drive.

Downloading EDID Data Pg 1 of 2

1) Press “ADJ” key.

2) Select menu,
Either “PCM EDID D/L” or AC3 EDID D/L

3) Highlight “Start” then Press “Select” key.

4) When Writing appears
Downloading in progress.

5) Downloading Complete.

Click on the pictures to zoom in

LG42LE5500 - LED Backlights 1080PDirect View LCDTV – SMPS (Power supply) board [EAY60803101] troubleshooting-repair

How to troubleshoot and repair Power board  of  LG42LE5500 LED TV

Part number: EAY60803101

POWER SUPPLY SECTION

This switch mode power supply develops Stand By 3.5V at all times when AC is applied.

At power on, it develops 12V and 20V for the Main board.

It develops 120V for the LED Backlights

This power supply draws less than 1 watt during stand by mode. The fuse F101 and F103 reads 7.6V (from hot ground) during this time.

When the controller chip receives the PWR-ON command 3.36V via P201 Pin 1, the primary section increases its current supplying ability. Both Primary fuses F101 and F103 now read a little more than 395V.

T102 delivers AC to D206 which develops the 120V for the LED backlights.

P201 Connector: (To Main Board)

12V (11.43V) is routed out P201 pins 17, 19 and 21 and 20V (21.27V) is routed out P201 pins 2, 3 and 4.

P204 Connector: (To Panel LEDs)

120V is routed out P204 pins 1 and 12.

P205 Connector: (To Panel LEDs)

120V is routed out P205 pins 1 and 12

Power Supply Start Up Sequence Click on the pictures to magnify

42LE5500 Television Turn On Commands Circuit Drawing.

Power Supply Board Low Voltage Test

AC Should not be applied at any time while adding jumpers or While unplugging connectors as damage to the circuit Board may occur.
a) When AC is applied, the SMPS “MUST” be producing STBY 3.5V on pins 9, 10, 11 or 12 of P201.
If 3.5V Standby is not being generated, the SMPS is defective and must be replaced. There is no need to continue with the next test.  But, make sure AC is arriving at the connector SK101.
(b) Unplug P8000 on the Main Board to make insertion of the Jumpers easier. Use P700 Side to insert resistors.

No Back-light during this test

Add a jumper between (3.5V STBY) pin 7, 8, 9 or 10 and Pin 1 (PWR_ON). Apply AC.
This will turn on the power supply, relays will click.
a) Check that the 24V and 12V power supplies are turned on,
* P201 (12V pins 17, 19 and 21)
* P201 (24V pins 2, 3 and 4)
* P204 and P205 (120V pins 1 and 12) to the Panel. (Or check D206 + lead)
(2) Remove the AC power.

Power Supply Board Back-light Test

Continue if the 1st test was OK.
Leave original jumper in place.
(3) Add another jumper between (STBY_3.5V)
pin 9, 10, 11 or 12 and Pin 18 (INV_On).
(4) Apply AC Power. (Simulating a Power and Back-light On command.)

Back-lights Normal

a) If normal, the backlights should turn on.

SMPS OK, Inverter OK.

Backlights Abnormal:

a) Recheck all connections.

b) Confirm the INV On/Off line pulling up to at least 3V.

c) Check the connections to the Panel.

If the Inverter On command is pulling up to 3V and the 120V is being generated from D206 + lead, See the Inverter Section of the Power Supply for additional checks.

Note: If either P204 or P205 is disconnected, the backlights will come on, but shut off in 4 seconds.

REMOVE AC POWER

42LE5500 Inverter Part of the SMPS

Power Supply Connector P201 Voltages

Power Supply Connector P204 / P205 Voltages

How to replace the broken screen – NX008HD8G Nextbook

Nextbook NX008HD8G Screen Replacement

Use this guide to replace a broken screen. Sliding the plastic opening tool between the back panel and the front glass can be difficult. This guide is relatively simple, mainly unscrewing
and disconnecting a ribbon connector.
Using your finger, open the plastic tab to the right of the rear-facing camera.
Wedge your fingernail in between the back panel and the plastic tab and pull the plastic tab towards your body.

Using your finger, remove the SD card by pressing down on top of it (toward the bottom of the device) until you hear a clicking sound.
Once the card pops out, use your finger to pull the card completely out of the SD card slot.

Remove the 5 mm screw using the Phillips PH00 bit metal Screwdriver.

Use the plastic opening tool to separate the back panel by carefully sliding the narrow end of the tool between the front glass and back panel.

Use a second plastic opening tool to help pry the front glass from the back panel.

You will hear some cracking sounds when separating the front glass from the back panel.

That is okay! That is the back panel latches releasing the front glass.

Use your hands to completely separate the rest of the front glass from the back panel.

Do not to pull the device apart with too much force. If you do, you may break or bend the back panel.

Using the Phillips #0 bit screwdriver, remove the four 5 mm screws with the washers around them connecting the digitizer to the screen.
Using the Phillips #0 bit screwdriver, remove the two 5 mm screws connecting the motherboard to the back of the digitizer.

Using the flat end of the plastic spudger, open the black ribbon connector door on the right side of the motherboard.
Pull the ribbon out of the ribbon connector using your finger.

To separate the digitizer from the screen, tilt the device on its right side and use your other

hand to pull the battery to the right.

If you tilt the device too far the digitizer may fall out.

The upper left corner of the motherboard may be harder to disconnect from the screen.

To reassemble your device, follow these instructions in reverse order.

Samsung Galaxy Note-5 Smartphone – how to replace the rear camera, front camera and earpiece

Samsung Galaxy Note 5 rear camera replacement, front camera replacement and earpiece replacement share most the same steps, so show them together.

Rear camera, front camera and earpiece

Remove the Sim card tray.

Remove the S Pen.

Remove the back cover.

Remove the screws.

Remove the middle housing.

Remove the battery. But it's not necessary. You also can just release battery connector from motherboard.

Release the connector on the board.

Release the USB board connector on the back and remove the motherboard from front assembly

Remove the rear camera

Remove the front camera and noise-canceling mic

Remove the earpiece assembly.

To reassemble your device, follow these instructions in reverse order.

TOOLS: needed

Heat Gun (1)

iFixit Guitar Picks set of 6 (1)

Small Suction Cup (1)

Phillips #000 Screwdriver (1)

Spudger (1)

PARTS: needed
Samsung Galaxy Note 5 rear camera (1)
Samsung Galaxy Note 5 front camera (1)

Sony RDR HXD790 DVD Recorder – How to enter service mode, adjustments, How to take the disc out at emergency, faults diagnosing, SMPS schematic

Sony RDR-HXD790/HXD795, RDR-HXD890/HXD895, RDR-HXD990/HXD995/HXD1090, HXD1095

Remote control: RMT- D251O, D251P

Australian Model

RDR-HXD890, HXD990

DISK REMOVAL PROCEDURE IF THE TRAY CANNOT BE EJECTED (FORCED EJECTION)
1. Remove the upper case.
2. Insert the stiff wire in the hole and eject the tray.

NOTES DURING THE FORCED EJECTION
1. If the forced ejection is executed while a blank disc media (DVD±RW, ±R) exists on the tray
* Insert a DVD-ROM (DVD test disc, DVD software available on the market, or the like) in the tray and then close the tray.
Note1: If you close the tray while it is empty, ejection of the tray becomes impossible.
Note2: If you close the tray with a CD disc inserted in it, the CD can be ejected. 

However, if you close the tray while it is empty, there can be a case that ejection of the tray becomes impossible.
Note3: Even if you replace the DVD drive unit while the tray remains under the state as described above, the situation cannot be improved.
2. If the tray cannot be ejected while the disc is not inserted
* Execute the forced ejection.
* Insert a DVD-ROM (DVD test disc, DVD software available on the market, or the like) on the tray and try to close the tray.

 (There are cases that it recovers the trouble.)

3. Contents of forcefully ejected blank disc media (DVD±RW, ±R) can be damaged. 

(There can be a case that initialization is also impossible.)

MODEL NAME SETTING METHOD WHEN ENGINE IS REPLACED

Required equipment:

* Remote controller (RMT-D251O/D251P)

* Service remote controller (Part code: J-6090-203-A)

* Monitor.

Model name delete method.  

A special remote control (Service remote control) needed to proceed.  Can be purchased from the authorized service center for Sony. 

1. Turn the main POWER ON.

2. Press the following buttons on the service remote controller in this order.: “ESC” > “CHAP” > “1”

* Confirm that the above operation is performed in the state that the screen has exited all settings such as “Home Menu” or “Simple Setting”.

3. Turn the main POWER OFF.

4. Turn the main POWER ON.

5. Find out the tentative model name from the Correspondence Table  for the client machine. Then, enter the 4-digit “Input No.” on the screen using the service remote controller.

6. The model name setting method is complete. (Screen disappears.)

* Upon completion of the model name setting, be sure to press both “ENTER” and “3” simultaneously on the service remote controller without fail. 

It sets the remote control code “3”.

Symptom: If the following operation is performed, set won’t be able to be restored.

Remedy: Must not be performed the following operation using service remote.  

If it is performed, set won’t be able to be restored.

And if set is broken by the operation, we can’t guarantee the set when pressing in order of the following button.

* [ESC] > [STEREO]

([ESC] > [Any button which is not described in SM])

HOW TO DIAGNOSE HDD FAILURE

Defective HDD

There are four symptoms of defects in the HDD.

1. “E01” is displayed on the FLD. (The HDD is unauthorized.)

2. “E02” is displayed on the FLD.

3. When playing a video, MP3, or JPG, contents freeze.

4. Irregular noises from the HDD

HDD Recognition status

How to enter Recognition status and sub screen mode.

• While the GUI screen is not displayed, use the service remote controller and press “ESC” key followed by “DISP” key.

• While the first screen is displayed, press “DIG/ANA” key repeatedly until the desired sub screen is displayed.  

The sub screens change.

Factory Check

1. Pull out and then reconnect the AC cable.

2. Press “ESC” key followed by “P.RUN” key to start Formatting.

3. When “B COMPLETE” appears, the Factory Check is complete.

4. Press “Power” button. The unit starts normally.

When “Factory Check” has finished completely without error , reset “Recording Error History” and “A TA/ATAPI History Error” with the Clear key

Note: Write down the HDD information on the HDD return sheet before replacing the HDD.

SERVICE MODE

When performing “Factory Check”, the data saved to the HDD by the customer is erased.

Obtain customer consent before performing “Factory Check”.

“Recording Error History” and “ATA/ATAPI History Error”, 

Final Check

SELF TEST (SMART TEST)

This is a simplified diagnosis for the HDD.

A serious failure in the HDD can be detected with this test.

Time required for testing: Approx. 60 sec.

How to start/terminate the diagnostic program

Use the remote control unit for servicing.

• How to start: Press the following keys in this order; “ESC”, “CX”, “0”, and “1” keys. 

• How to terminate: Press “ESC” key.

Execute Self-Test.

• Press “3” key on the remote control unit for servicing while the menu screen is displayed.
• When the following screen is displayed, press “1” key to start the Self-Test.

Diagnosis results

* Without an error: “. . . Completed” is displayed.  Then, proceed to the Extended Self-Test.

* With an error: “. . . Error” is displayed. Look at the number in Test Result.

If the place value for tens is 1 or 2, execute the Self-Test again.

If it is from 3 to 7, the HDD must be replaced.

Note: If the result of the second test is the same, replacement of the HDD is required.

Performance Check

Press “ESC” key, then “A.MON” key.

This is a reading test across all sectors of the HDD.

Data recorded on the HDD will not be erased, because no writing operation is performed.

Time required for testing: Approx. 45 min/160 G 75 min/250 G 130 to 150 min/500 G

When “Performance Check” finishes completely without error, reset “ATA/ATAPI History Error” with the Clear key.

FL Display Flow

* The logo for “Factory Check” and “Performance Check” is recorded in “ATA/ATAPI History Error”

Notice of traverse mecha (TM) exchange.

For TM exchange, refer to SM below.
Service manual:RW6G/７G TRAVERSE MECHANISM REPAIR MANUAL(9-885-951-1*)
How to get it: 1.Open Service manual home page of ESI.
2.Input RW6G into ”Model Name”.
3.Click “Search” button.

SMPS schematic

Click on the pictures to zoom in

Sony TA DX8 – Integrated Stereo Amplifier Schematic – Exploded view - Australian model

DIN power output -75 + 75Watts (6 oHms)

Continuous power output - 100 + 100 Watts (6 oHms)

Used ICs: STK402-1005, M5218AP, BU4052BC

Power and Panel board: Schematic and PWB

Main board: Schematic and PWB

Exploded view

Click on the pictures to magnify