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The TV remote control transmits television signals as pulses of frequency around 37.5kHz. Each button on the remote control is pressed or equivalent has a pulse signal codes. This remote transmits pulses of the circuit block of the same frequency as the remote to your TV confuse decoding the transmitted signal. The heart of the circuit is the 555 timer IC in astable circuit works mode.The output series of pulses at a frequency of 18 kHz to 48 kHz by simply adjusting the 5K potentiometer. What you do is adjust the potentiometer until frequeny jives to its distance from the TV or until the signal is ignored by television. TV Remote Jammer Using 555 IC Circuit Diagram

Used ICs:  TDA7296 – TDA4653 – BUZ91A(FET) – TEA6422D – TEA6415 – MSP3411 – MC33079 – VPC323 – M27V322-100 EPROM – TS831-3IDT – SDA9488 – TDA9332-N2 – TSA5523M – TDA6111 – LM2574 – TE28F008 – KM416V – STI5500 – STV299B – CS4344 – LM2574M – MAX4546 – STV0056 – TDA6151-5X   Schematic Click on the schematics to zoom in

Television set equipped with a circuit protector, then there are several possibilities that could occur if there is a problem on one of the circuits. Protect circuit horizontal part - When turned on the horizontal plane will live for a while, but then died again. At the time of death when measured on the horizontal driver indicates that no drive signal. If the power jack unplugged then try to turn on again then repeated a similar incident will happen again. But if if the base of the transistor or transistor try to open removable drive signal was viable. Protect circuit of microcontroll - If checked the voltage at pin microcontrol power on-off control, power control is turned on when the plane going "on" for a while then back "off". If you unplugged the power jack will power "on" again, but briefly and then keep coming back "off". On certain models sometimes die when the aircraft was marked with the blazing LED indicators blink. Protect circuit tu...

ET-5EC-K04/ET-5EC-K61/ET-5EE-K06 (Tuner) – TDA8897/TDA8899 (System control chroma jungle) – STR W6556A – LA78041/TDA8177 (Vertical scan output) – TA1343 (Audio processor) – AN7522/AN17821 (Audio output) – 24C08 (System memory) Circuit Diagram [Click on the circuit diagram to zoom in]

LED TV INTRODUCTION LED TV (Light-emitting diode television) is a term used by Samsung electronics and other consumer electronics companies to describe its line of LCD (liquid crystal display) TVs that use LED backlighting. The term LED TV is disputed and the complaint is that the display is not composed of 100% LEDs and so should not be called LED TV. LEDs in their current form are much too large to be individual pixels on a conventional television. The use of a true LED display is therefore reserved for much larger screens in sports grounds and other commercial locations. LED-backlit LCD TVs do differ from conventional LCD TVs in some important areas: • They can produce a very bright image with greater contrast and deeper blacks compared with LCD TVs. • With Edge-LED lighting they can be extremely slim. Current models on the market are just over 1 inch thick. • They consume much more power. About 40% less compared with an LCD TV of a similar size. • They can offer a wider colour gamu...

Schematic -  ONIDA 14XS / 20XS / 21IQ - 14TVE / 20TVE / 21TVE - 21BLACK FGL (FTG) See the Service Mode & adjustments =>

The schematic above can be used for supply on color TV for all type TV circuit. But we need to know how much voltage needed by the circuit of color Television. To set the output voltage, the setting on VR1 1K ohm. Required input voltage 300V DC which is already on TV circuit, so we just take a 300V dc voltage existing on the TV circuit, and for a circuit supply voltage on our TV cut the line PCB and connected with this  universal switching power supply.For the transformer we can use the TV regulator transformer. Part List : R1 = 33R 5W R2 = 330R 1W R3 = 2K2 R4 = 47K R5 = 2K7 R6 = 22K R7 = 390K R8 = 47R 1W C1 = 100uF 25V C2 = 1n2 2KV C3 = 18n C4 = 18n D1 = 1N4148 D2 = 1N4148 D3 = ZD 12V D4 = 1N4007 D5 = 1N4007 VR1 = 1K ZD1 = Zener 6V T1    = TV regulator transformer Q1   = K2847 Q2   = C2328A PCB line Finishes circuit

MAIN DIGITAL BOARD SCHEMATIC                                        Service Mode - SMPS circuit diagram - and more =>

This circuit is able to identify PAL and NTSC video signals. Its output is high for an NTSC signal and low if the signal is PAL. This output signal can be used, for example, to automatically switch in a colour subcarrier converter or some other device while an NTSC signal is being received. One application is for the reception from satellites of 'free-to-air' TV signals, which in Australia generally contain a mixture of 625-line PAL and 525-line NTSC programs. Operation of the circuit is as follows. IC1 is an LM1881 video sync separator which takes the video input signal and generates vertical synchronisation pulses. For an NTSC signal, these pulses are 16.66ms apart, corresponding to the 60Hz field rate, while for a PAL signal they are 20ms apart, corresponding to the 50Hz field rate. The vertical sync pulses are fed into IC2a, the first of two dual retriggerable monostable multivibrators in the 74HC123A. IC2a has a period of very close to 17.9ms, set by the 200kO resistor a...

TDA16888 (SMPS control).  Pin 2 – 7.5V; Pin 9 – VCC

Automatic TV Lighting Switch . The author is the happy owner of a television set with built-in Ambilight lighting in the living room. Unfortunately, the television set in  the bedroom lacks this feature. To make up for this, the author attached a small lamp to the wall to provide background lighting, This makes  watching television a good deal more enjoyable, but it ’s  not the ideal solution. Although the TV set can be  switched off with the remote  control, you still have to get out of bed to switch off the lamp. Circuit diagram : Automatic TV Lighting Switch Circuit Diagram Consequently, the author devised this automatic lighting switch that switches the background light on and off along with the T V set. The entire circuit is fitted in series with the mains cable of the TV set, so there’s no need to tinker with the set. It works as follows: R1 senses  the current drawn by the TV  set. It has a maximum value  of 50 mA in standby mode,  ri...

With LED technology, the energy-efficient, Samsung Series 4 TV produces a brilliant, clear picture. The Dolby Digital Plus/Dolby Pulse is an advanced surround sound feature that optimizes the TV’s audio from connected devices. The Wide Color Enhancer Plus features lets you see picture with vibrant, natural-looking images. Clear Motion Rate 60 Clear Motion Rate (CMR) was developed to accurately measure how well a LCD or LED TV can depict fast-moving images. LED TVs with a CMR of 60-120 can display action-packed movement with sharp detail and vivid contrast while eliminating image distortion. Wide Color Enhancer Plus Wide Color Enhancer Plus allows you to witness the entire RGB spectrum brought to life on your screen to bring you exceptionally vibrant, yet natural-looking images faithful to the director’s original intent. ConnectShare Movie ConnectShare Movie lets you watch videos, play music, or view photos from a USB connection without needing to use a PC or special equipment. Simply p...

SANYO LCD- 24XH7-00 (Argentina) - LCD 32HX4 - DP42410 - DP46142 (LED LCD TV)  SERVICE MODES SANYO LCD-24XH7 Quick operation is needed to enter Service Mode. To enter the Service Menu > Press and hold the MENU button on Side Controls. > Keep pressing the MENU button and press the " MUTE " button on the remote control, and the FACTORY MENU will be displayed. > Select SERVICE by pressing ▲▼ button, and press ◄► button to enter. SANYO DP42410 > At any input source then press the remote controller buttons “ ”, “ EXIT ” and “ > ” to enter factory mode. During Factory menu, if “ MENU ” or “ EXIT ” key is pushed, system will exit factory mode. > Exit Factory Mode: After finishing adjusting color temperature, press [MENU] or [EXIT] to exit factory mode. SANYO DP46142 - LED-LCD TV At any input source then press the “ During Factory menu, if “MENU” key is pushed, system will exit factory mode. Items of Factory menu When in Component/ Video (Composite)/ ANT inputs t...

Vertical Protectors (another term surge protector or Vertical CRT Neck Guard or protector) . If the vertical deflection does not work, then the raster will glow a horizontal line. This can cause the picture tube phosphor layer was destroyed by fire when the aircraft be kept alive in the long term. There are several types of system protectors, vertical relationships: Protector surge protector is connected with x-ray to the horizontal which will trigger the horizontal oscillator is not working Protectors gets connected to microcontrol that will trigger the "power off" so that the plane will turn off automatically or plane alive but raster becomes dark (brightnes level down). Vertical Protect The workings of the system-vertical surge protector that can be found there are several kinds: Using sampling pulses from vertical-out IC which is connected to  microcontrol  . If  microcontrol   not receive these pulses the surge protector will work. Using a sampling of...