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Circuit diagram Click on the schematic to zoom in

Video control and display data:  Video signal is received from TUNER, AV port(AV1,AV2,S-Video,Component) and goes to the one-chip video decoder (VCTI) which separate the R,G,B signal and passes on the signal to AD converter(AD9883) which converts 4:4:4 video format into digital and gives output to the Picture Enhancer(FLI2300).This picture enhancer improves the quality of the picture by changing the level of RGB signals. The output of this enhancer chip is fed to the deinterlacer ,which in turn goes to the Scalar (GM5221).The scalar gives the output on the LVDS cable which is connected to LCD module.  VCTi acts a micom and is responsible for video processing and audio signal processing. It accepts the RF signal and separates sound and picture from it.  Scaler is responsible for regulating the timing of signal to LCD panel and size and location of the signal. Graphic control accepts the PC(Analog RGB) and DVI-D (Digital ) signal, Scalar is responsible for regulating the ti...

TV tuner that is used on older models and new models of television there are some differences. Therefore, understanding the different types of tuner would be useful if we want to replace the tuner with the other models. Supply voltage tuner. Tuner older models generally use a supply voltage of 12v, the new models are commonly used 5V supply voltage. Some use a 9V voltage, but very rare. TV TUNER Voltage Synthesizer tuner (VS tuner) Tuner that uses a tuning control (VT or BT) with a voltage between 0 to 33V Voltage Synthesizer tuner named. TV can be found on the aircraft models, old and new Based on how the control band-switch, Tuner VS then there are 2 kinds, namely Using 3-Band input sw, the VL-VH-U Using 2-Band input sw, the Band SW1 and SW2 Band. This tuner is actually similar to the type of band 3-sw. For control-sw 2 band is in the tuner will still be converted into 3-sw bands. Frequency Synthesizer tuner (FS tuner) or the type of PLL Tuner wherein the tuning voltage and the vo...

VCT4942 – 24C161 – LA42032 – LA78045 – FSCQ0765RTS(STR) – FQP6301TSTU(Horizontal output transistor) – FOK14B001(FBT)  CRT base card Side AV SMPS and deflection Syscon-Chroma Click on the schematics to zoom in

Schematic and Printed Circuit Board - TCL 21A71A-PAL/NTSC CRT TV Used ICs:  TDA7266 – TMPA8873 – 24C08 – TDA4864AJ – MSP3425G – TEA1506P (SMPS Control) Chassis 40-M123SP- MAK1X-M123SP CIRCUIT DIAGRAM PWB CLICK ON THE PICTURES TO ZOOM IN

This device connects to your audio input and output video from a cassette player or a camcorder and thus pass through the air to one or more televisions in the area of ​​a house. It is also useful to output the image and the sound of a computer to do multimedia presentations in several TV screens distributed in an enclosure. If you have a satellite TV service or premium cable system and want to watch programming on multiple televisions with a single tuner and / or decoder output can connect it to this project and enjoy the images in the house. Also useful in closed systems for security video, avoiding large number of cable runs. Domestic TV Transmitter Circuit Diagram As shown in the circuit diagram the circuit has several stages (a local oscillator, an FM modulator for audio an AM modulator for video, a mixer and an output amplifier) very simple to assemble. It has the controls necessary for achieving optimal fit and proper signal transmission. Circuit Description: The video signal en...

Exapod ported TV-B-Gone, the universal TV off button, to the tiny PIC12F1840. He used the free version of the Hi-Tech compiler so the optimizations leave a lot to be desired, but the code only uses 17% of program memory. The prototype was made on a protoboard and an SOIC packaged PIC. [ ]

There are actually several kinds of tools that can be used for check whether flybak damaged. But we have a simple way we have always done for ascertain whether flybak damaged or is still good, before replacing the horizontal transistor. All it takes is a light bulb with an added Exciter 100Watt cable connection along approximately 25cm. The trick determine if flyback damaged or is still good is as follows : Break up the relationship between the collector of transistor horizontal flyback-out. By (a) Open collector aspirated by means of the printed board solder, or (b) Remove the jumper cables if any, or (b) Cutting prited path. Ac volt-meter pairs of horizontal transistor base with a ground out. Turn on the plane a little while - there must be an ac voltage of about 1v. This is done is for ensure that the horizontal oscillator and driver are working horizontally. Replace light bulb between the collector of transistor flyback horizontal (light diseri the collector). Turn on the plane...

Used ICs:   TEA1733, MT29F1G08ABA, BH3544, AMP5707, MP1495, MP1470, SY8066, 4953, AP9435 Headphone amplifier and Mute circuit NAND Flash Audio amplifier circuit Power LVDS SMPS Back-light inverter Click on the schematics to zoom in

TDA9341 – AT24C08 - CD4052 – AN7522 – TDA2003 – [LOT BSC25-N0832/BSC25-T1010A/BSC24-01N4014K] – Transistorized SMPS FBT variations: FOR 29”  BSC26-01-N4010F BSC26-N2143 BSC26-01N4010E BSC26-N2148 BSC26-01N4004F BSC26-01N REPLACEMENT OF MEMORY IC This TV circuit uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits. When replacing memory IC, be sure to use IC written with the initial value of data. PROCEDURE FOR REPLACING MEMORY IC (1) Power off Switch the power off and unplug the power cord from AC outlet. (2) Replace IC Be sure to use memory IC written with the initial data values. (3) Power On Plug the power cord into the AC outlet and switch the power On. (4) Check and set system default value: 1) Press “ MENU ” key followed by digits ' 6''4''8 ' and '3' . Then Press “TEST” key on the Remote control unit for factory used. 2) The red “M”or”factory” will be displayed on the screen, repeat this and ...

TH-42PA50E - TH-42PE50B - TH-37PA50E - TH-37PE50B Quick adjustment after P.C.B. exchange Power (SMPS) board - block diagram Power board - Component side Power board - Circuit Diagram Click on the pictures to zoom in

To listen via headphones preferably good ‘surround your ears’ muff-type headphones, which not only deliver the wanted sounds directly to your ears and hearing aid(s) but also cut back the competing sounds at the same time. If you pick the right kind of headphones, with some acoustic damping in the earmuffs, they don’t cause your hearing aid(s) to emit feedback and whistle sounds either. The result is comfortable listening at a volume level that’s right for you, where you can hear and understand everything that’s being said. Headphone jack Some TV sets do have earphone jacks, so you could simply fit a pair of stereo headphones with their own volume control (if necessary), plus a long cord and plug to mate with the jack on the TV. But many sets do not have a headphone jack, and many that do have it wired so that when headphones are plugged in, the speakers are disabled. That’s fine for you, but no good for everyone else. In any case, being hooked up to the TV via a long cable has its own...