Perhaps we often hear people say "oh TVku broken tube". The question that arises then, is it true they were broken TV tube. The answer can not be yes.Sometimes we do not see the whole screen (distressed / or folding) so that there is a black part on the top or bottom, sometimes if the damage is severe can only horizontal lines across the TV screen kita.Orang that do not exist that we diagnose the faulty tube tv.TV we are not broken but the broken tube in the vertical sync.Then there is also a screen that pressed the left or right section. It's also not because of damage to the tube. For this there are several possible damage broken: can the horizontal, Fly back transformers, power supplies, or perhaps just an electrical voltage in your home are too ngedrop.Then the trapezoidal or depressed left, right, up and down. Typically for this damage often occurs due to the deflection coil short / shorting because this emailnya.kerusakan peeling layers if left unchecked will spread to the horizontal and the other or worse tv will make us totally dead.Subsequent damage is the dominant color tv looks a certain color or no color that is unusual or loss of color. For this damage could be a tube television is really broken. but it helps us to diagnose their own destruction if we simply understand a little knowledge of electronics.To damage this color, it needs to do is look at what the dominant color or color of what was lost. (Red, green, blue) because it is technically a color tv is the merger of the three elements of color.Once we know what color is missing, we can do the next step is to try to repair or call a service when we are not able to fix it.The question may be how to find the damage or repair this damage?Here I will try to write a little trouble shooting on this type of damage is simple:after we open the casing, the rear of the tube there is a small PCB and attached to the back of the tube. It is the color of the amplifier PCB. usually frequent breakdowns there. The first step to do is clean the surface of the PCB deengan thiner, then doing strengthening soldiran there by way of re-soldering the legs disana.keretakan soldiran components that are not clearly visible to the eye can cause color damage earlier. and sometimes to move sdh damage can be resolved. Nb: for TV brands National / Panasonic usually this step can not recover damages even if the damage is the loss soldiran initially. steps to be taken is to replace the transistor amplifier in the PCB color (red, green, blue) all three at once.If after repeated soldir but the color is still not normal, now it's our turn to check it true that we are indeed broken TV tube or indeed any other damage. The trick is quite simple.Take our multi meter cable, which can be black or merah.kemudian plug one end on the ground from our TV (casing), then turn on the TV, then one end of the cable before we plug it into the tube cathode leg is in a small PCB earlier. There are 3 cathode there, red, green, and blue. Usually written in PCB KR for red cathode (red), KB for blue cathode (blue) and KG for green cathode (green). Note the screen changes when we do this step. Dominant color will display red when we plug in the cathode was red, as well as for other colors.If the color on the screen does not change when we plug it into the cathode, should be suspected damage to the tube (screen) from our tv. Although it can happen from pin CRT connector loose.When we express diagnostics our TV tube is not damaged, we can do small repairs to replace an active / passive is in the little PCB. Usually transistors often broken. If we can not or are afraid to do it, we can call a service person. armed with a mild diagnosis we had we could argue if the technician / handyman service we declare tube / tv screen is broken.
Tidak ada komentar:
Posting Komentar