Richtige Fernseher haben Röhren!In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....
If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.
These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.
While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.
Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.
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Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes,
however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory. All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !
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 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,the signal of PC input
is connected to analog port in Scaler and the signal of DVI-D input is connected
to digital port. Thus it receives two input and switch between them to give
output at the LVDS which in turn gives output at the LCD module.
