TCL 50P65US SMPS and Audio Output SCHEMATIC

 

TCL 50P65US SMPS SCHEMATIC

TCL 50P65US Backlight Schematic

TCL 50P65US-PSU connector 12Volt and connector 12Volt to 5Volt

TCL 50P65US-12VPSU TO 3.3V STB and 12V TO 1.5V CPU POWER

TCL 50P65US-5V TO 1.10V Core Power

TCL 50P65US-AD82587D – Audio Output Power schematic

Vacuum tube (valve) amplifier circuit diagram using Valves EF86, 12AX7, 6L6, ECC83 and using power transistors 2N3055

 

Power amplifier using EF86, 12AX7, 26I6GC  Valves (Vintage sets)

Power amplifier using 2N3055 Power transistor

Yamaha WIRELESS SUBWOOFER NS-WSW42 how to update the software, protection details, error codes, schematic (Circuit diagram)

 

FRONT SURROUND SYSTEM YAS-207 or ATS-2070

CENTER UNIT YAS-CU207orATS-CU2070

When accepting a repair order from the user, it is recommended to receive the YAS-CU207/ATS-CU2070 and NS-WSW42 as a set for the repair work.

Turning on the power to YAS-CU207- ATS-CU2070 makes wireless connection of YAS-CU207- ATS-CU2070 and NS-WSW42 possible. After the repair work, if their wireless connection is not made automatically, makes
it possible manually. (For details, refer to “PAIRING THE CENTER UNIT AND SUBWOOFER MANUALLY”.)

Lithium batteries: CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.

YAS-CU207 - ATS-CU2070 - NS-WSW42 updating firmware

When the following part is replaced, the firmware must be updated to the latest version.
MAIN P.C.B.

Confirmation of firmware version
* It is not possible to check the firmware version before and after updating the firmware.

Initializing the back-up IC

After updating the firmware, the back-up IC MUST be initialized by the following procedure store the setting information properly.

Connect the power cable of this unit to the AC outlet and turn off the power.
Then, while touching the  (volume –) key, touch the  (power) key, and all indicators will flash and initialization will be completed.

Required Tools
• USB storage device
(For USB2.0 High speed)
• Latest firmware

Preparation
1. Download the latest firmware from the specified
download source to the folder of the PC.
2. Copy the latest firmware from the PC to the root
folder of the USB storage device.
Note: When the latest firmware is copied to a subfolder of the USB storage device, the update will not proceed.

Operation Procedures
* Disconnect the power cable of this unit from the AC outlet.
1. Insert the USB storage device to the UPDATE ONLY jack.
2. Connect the power cable of this unit to the AC outlet.
3. Turn off the power of this unit. (Fig. 1)
4. Keep touching the  (volume –) and  (power) keys until the CLEAR VOICE indicator flashes.
Update of the firmware starts automatically.

(If writing of the firmware has failed, disconnect the power cord from the AC outlet and perform the firmware updating procedure again from the beginning.)

5. When writing of the firmware is completed, all indicators flash.
6. Touch the  (power) key to turn off the power.
7. Remove the USB storage device from the UPDATE ONLY jack.

List of error display

Protection display

If there is anything abnormal with this unit, its protection function works to turn off the power even if it is turned on.
Touch the (power) key again to turn on the power, and the DD / DTS indicator indicates the causal factor of the protection function.

Flashing pattern
For the protection function display, the same flashing pattern is repeated 5 times.

Schematic diagram

Aiwa CT X5500, CT Z5500, CT X5200, CT Z5200, CT X5300 – Stereo Cassette Car Receiver - schematic diagram

Mechanism types

CT X5500, CT Z5500 – Basic Mechanism CDS-50-WP1

CT X5200, CT Z5200 – CT X5300 - Basic Mechanism CDS-50-WP2

Semiconductor Bases

Schematic – CTX5200, CTZ5200, CTX5300

Schematic CTX5500, CTZ5500

Logic board schematic

Samsung power board circuit BN44 00369A

 

PFC and Multi section

Inverter section

Hisense HE40M21, 40M2100, 40M2106, 40M2108, 40MEC2150S, 40MEC2155 Models Chassis MSD3463) – how to enter the service mode, How to update the Software

 

How to enter the Factory OSD Menu

With user’s RC
Power on the TV.
1. Press “Menu” button and call up User OSD Menu.
2. Select “ Sound” -> press “OK” button on RC to ensure then move (Down)  button to “Balance” item.
3. Press number key 1->9->6 ->9 in sequence when “Balance” item is focused.
Note: If necessary, re-do number keys.
4. Factory OSD appears.
Note: DC power off that can exit factory OSD menu.

Software upgrading

USB upgrade
USB upgrade includes two methods. One is USB directly upgrade the other is USB menu upgrade.

Upgrading file rename – MSD3463 (underscore) SN51 (underscore) 75.bin

USB directly upgrade

Put the MSD3463-SN51-75.BIN In root diarectory of USB disk.  Unplug the TV power cord and plug the U disk to the TV

Plug the TV power cord ,TV will update automatically. Update processing red and blue led indicator flash alternately slow.

When Update finished, the red and blue led indicator flash alternately fast. and re-plug the power cord to power on

USB menu upgrade

Insert USB disc thet only have one upgrading file XX.bin in root disk

Enter the Factory OSD Menu

Choose Factory menu > Function > Software Update (USB) to start the update

After the process is over, unplug the USB disk and re plug the power cord to power on.

Mstar Tool upgrade

Install the USB-serial driver

(PL 2303 Driver installer.rar)

For the first connecting ,the PC will recognize and automatically install the USB device.the process is just like the installation of mini disk.

Hardware connecting
You can update the software through a special tool a USB-to –serial port (as following)
USB port to your PC and the serial to the TV’S VGA port.

For the first connecting, PC will recognize and automatically install the USB device.  The process is must like the installation of a mini disk.

Mstar ISP Tool

Install the ISP_Utility V4.5.2.8 -------only for the first time update.
Connect the PC and main board with the USB-serial board
Click the” Config “button. And then a dialog window will show as below.
Draw on the front of “Use USB”
Port Type setting is USB
Base Addr setting is 0x38C
ISP Slave Address choose 0x92
Serial Debug Slave Address choose 0xB2

Click the Connect button if appear the following figure, It indicates that the ISP_TOOL has connected.

If appear the following figure It indicates that the ISP_TOOL has not connected. Please click the Dis Con button and click Connect button to connect again.. Check: a Power on b USB board connect c connection line match.

Click the“Read ”button

Click the“Auto”button and choose parameters as following.

Then Click the “Run” button to start

If show” error message “then click the “Run” button again and again till show the dialog window.

Philips 43PUT6002 LCD TV how to enter the service mode, main power supply and amplifier schematic, how to upgrade the software

 

Factory Mode (Service Mode)
Press the following key sequence on a standard RC transmitter: “1999” directly followed by MENU.

Software Upgrading, Panel PN
Software Upgrading

 Method 1: The following update is for .bin file.
1. Rename the file to “MstarUpgrade.bin”
2. Prepare a USB memory.
3. Copy the software to USB flash disk(root directory).
4 Press [menu+1999 ],enter the factory menu, Choose [main Updates], then press

5. Software update menu will pop up when press confirm key, then select “Yes” to confirm:

6. When the TV software is updated, the TV will turn on again automatically. Remove your USB flash drive.

Method 2
Copy the software to USB flash disk ,Keep pressing VOL+ key on the machine panel, power on the machine, the standby light flashes quickly after about 5 seconds, standby light extinguish and turn into lighting after about 3 minutes, means that the upgrade is
completed.
Caution：
When the machine Upgrading (U disk light flash), do not remove U disk or switch off the power, otherwise it will destroy the software and lead cannot upgrade.
The machine must be power off when inserted or pulled out U disk, to avoid U disk or damage the machine.

Panel PN
Press the following key sequence on a standard RC transmitter: “1999” directly followed by MENU, can see the panel type information from factory menu, see the Panel PN from the configuration table.

Power Supply Unit
All power supplies are a black box for Service. When defective, a new board must be ordered and the defective one must be returned, unless the main fuse of the board is broken. Always replace a defective fuse with one with the correct specifications! This part is available in the regular market.  Consult the Philips Service web portal for the order codes of the boards.
Important delta’s with the platform are:
New power architecture for LED backlight
“Boost”-signal is now a PWM-signal + continuous variable
The control signals are:
PS-ON
Lamp “on/off”
DIM (PWM) (not for PSDL)
No detailed information is available because of design protection issues.
+12 output (on-mode)
+12V_audio (audio AMP power)
Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
Diversity
The diversity in power supply units is mainly determined by the diversity in displays.
The following displays can be distinguished:
CCFL/EEFL backlight: power panel is conventional IPB
LED backlight:
- side-view LED without scanning: PSL power panel
- side-view LED with scanning: PSLS power panel
- direct-view LED without 2D-dimming: PSL power panel
- direct-view LED with 2D-dimming: PSDL power panel.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.

DC/DC Converters
The on-board DC/DC converters deliver the following voltages(depending on set execution):
+5V, permanent voltage for the Stand-by Power system
+3V3-STANDBY,voltage for IR/Key board
+12V, input from the power supply for the panel common(active mode)
+12V-AUDIO1 for the AUDIO AMP
+1V8(AS1117-18))-EMMC, +V-EMMC-IO, voltage for EMMC when TV on
+1V5-DDR, voltage for DDR in main chip
TUNER_3V3(AS1117-33), supply voltage for tuner
+5V-SW, input intermediate supply voltage for USB Power,-WIFI,voltage for WIFI
+1.2VA_T2(MSH61110A1), +1.2V_T2 voltage for DTMB.
+1V2A(MSH61110A), supply voltage for MSD6A638

Video and Audio Processing - MSD6A638
The MSD6A638 is the main audio and video processor (or System-on-Chip) for this platform. It has the following features:
1. Worldwide multi-standard analog TV demodulator
2. ATSC/DVB-T/DVB-C/DTMB/ISDB-T demodulators
3. UHD@60Hz direct drive
4. Powerful CPU core
5. A transport de-multiplexer
6. A muti-standard video decoder (including VP9)
7. Rich format audio codec
8. H.264 & VP8 encoder
9. HDMI 2.0 receiver with 3D support
10. MHL 3.0 & Standby Charging
11. Ethernet MAC+PHY
12. Local dimming (LED backlight)
13. Two-link LVDS, V-by-one
OVERVIEW
The MediaTek MSD6A638 family consists of a DTV front-end demodulator, a backend decoder and a TV controller and offers high integration for advanced applications. It integrates a transport de-multiplexer, a high definition video decoder, an audio decoder, a two-link LVDS transmitter, a V-by-One transmitter, and a NTSC/PAL/SECAM TV decoder with a 3D comb filter (NTSC/PAL). The MSD6A638 enables consumer electronics manufacturers to build high quality, low cost and feature-rich DTV.
World-Leading Audio/Video Technology: The MSD6A638 supports Full-HD MPEG1/2/4/h.264/DiviX/VC1/RM/AVS/VP6/VP8 and HD .264/AVC, 265/HEVC, VP9 video decoder standards, and JPEG. The MSD6A638 also supports MediaTek MDDiTM de-interlace
solution which can reach very smooth picture quality for motions. A 3D comb filter added to the TV decoder recovers great details for still pictures. The special color processing technology provides a natural, deep colors and true studio quality video. Moreover, the MSD6A638 family has built-in high resolution and high-quality audio codec.
Rich Features for High Value Products: The MSD6A638 family enables true single-chip experience. It integrates high-quality HDMI2.0, high speed VGA ADC, two-link LVDS, V-by-One,USB2.0/3.0 receiver, Ethernet MAC+PHY, Quad core CPU and 512K bytes L2 cache,
OpenGL ES 1.1/2.0/3.0/3.1, OpenCL 1/0/1.1/1.2 compliant 3D graphic engine, and ATSC/DVB-T/DVBC/DTMB/ISDB-T demodulators.
All New UHD@60Hz Experience: The MSD6A638 family provides consumers with UHD 60Hz direct drive.
WW Common Platform Capability: The MSD6A638 family supports ATSC, DVB-T, DVB-C,DTMB and ISDB-T demodulation functions.
It reserves transport stream inputs for external demodulators for other countries or areas. TV maker can easily port the same UI to worldwide TV models. First-class adjacent and co-channel rejection capability grants excellent reception.Professional error- concealment provides stable, smooth and mosaic-free video quality.

Power board circuit diagram

Audio amplifier circuit diagram