Electronics

Selasa, 22 Januari 2013

broken DVD player

This afternoon all of a sudden someone came who said he had a broken DVD player and that is always turned on the message 'no disc'. Actually I am a bit lazy to visit his house, but because it is the responsibility, so how else would. I relented and came to his house to check the condition of the DVD player. It turns out that the new DVD he brought yesterday from Yogyakarta, but there he was fine. After arriving in Gunung kidul, he does not want to turn round and always display the message 'no disc'. My assumption, so the possibility is still there, because the first item is still nice suddenly broken like that. However, if the damaged usually rare VCD player I received as likely to be very small. Moreover, if the damage is already in block m-peg or power supply, it should look similar to the type can be used to replace it. But that is because the new DVD is broken one day, is likely to flare again is still there, I hope. Soon I open the casing, was indeed looking into the dusty and dirty. Even a lot of dust that covers the mechanics to optical. After I saw the optical, the disease apparently in sight. Optical lens is covered by a thick dust, which is likely due to too much tilted at the time taken to make the dirt stuck in the optical. I immediately wash with brush, washed with optical cleaning, and I turn it on.

blender crash damaged

It's been very long time I think I did not write about the person who tinkers electronics items on this blog, this time I will archive service blender is about to die, because some time ago there was a patient who complained blender crash damaged and can not function normally. judging from the damage seems indeed to fix the blender a bit easier than other electronic devices. The main component of the blend comprises an electric motor with the coil, as well as some motor speed control switch. Of damage is seen that the total dead blender, then there is a possibility that problems in the power cord, switch, or the electric motor. After I unloaded and carefully, it turns out both the cable and the switch still works fine. Seen physically, bike condition was not burned, the coil is still intact. Almost despaired at not finding a bright spot, but eventually I compared the concept of working the blender that is almost similar to the fan. If the fan if it would not turn, could have damaged the capacitor part to a drop spindle. Soon I was unloading rotor electric motor, and it turns out after the open-open interior, electric motor blender is indeed having problems. On the connection between the wire cable leading email with the switch having some sort of corrosion that can not be connected properly. Soon I cleaned and re-solder, all I suspected all parts re-solder. And apparently normal blender can be lit up again, so the repair was finished off blender that turns somewhat time consuming.

speaker is dead because

Today was pretty busy, from early morning until 5 pm today I was busy working on a side project that is improving electronic devices. Starting from broken TVs, computers, to active speaker should die my fix. There are new things that I have found that damage to the digital model of the active speaker. I unpack just once active speakers with digital models include a remote control. Damage from the active speaker is totally dead. I thought that causes the active speaker is dead because the power supply is not working. But after I turned out the block power supply loading and having no problems. All components are intact and the voltage of the power supply is also normal. Not being met solving problems, I continue checking on the front cover which is also the place all the controls like volume, mute, and other controls that everything is digital. Once I open it and measure, it should be 5 volts voltage is not up to the digital blocks that eventually I call block program. What I suspect is likely to sprawl on the socket, so that the voltage of the power supply can not be entered into the program board. Old sort, eventually causing death-even powered speakers I have encountered is because there is one line of PCB on the block breaking program. PCB track is quite small and the 'hidden', so it was not so apparent when viewed from the outside. Following this section, I continued, was able to re-ignite the speakers. And I continue to work even with a remote control with microphone fix the damaged well together.

cable TV is broken

One of the biggest obstacles when doing television repair, especially the antenna, antenna cable and antenna booster is the time to determine whether the cable is good or defective. Damaged here means the cable is broken, but because the fibers are broken it is, so it will not be visible when viewed from the outside, because the wires are still good physical condition. Signs damaged cable television usually can be seen from the channel or TV broadcast can not be captured by television, or TV images to black-and-white and full of noise. The things that cause the cable TV is broken is because the antenna is usually mounted on the outside of the house, causing brittle wires by rain and hot sun. There is a simple way to detect damage to the antenna cable, looking exactly which parts of the cord are damaged. The way I used to check the antenna cable that has long been used and know where the part to be cut or spliced. Unfortunately not, if you have to buy a new cable when the cable length can still be used? The trick is to use an analog multimeter, needle or small knife. First pull both ends of the wires so close together, and then tie the multimeter probe on one end of the cable, then the only probe that we will use to measure move along the wires. Then point the multimeter to measure the position of OHM, please note that the antenna cables are often damaged fibers are broken at the surface. So ignore the core part, we will measure the outer fibrous part (the part that wraps). Now after one multimeter probe mounted on the end of the cable, use a needle or a knife to stab the section you want to measure, for example, we take the middle part. Once the needle is attached to the cable, be sure that the needle of the fiber inside the cable, then connect the multimeter probe (measuring whether disconnected or not). Well, by the above we can see which parts of a broken cable, or the way in measuring needles on the cable move.

Image closed temporarily corrugated blue sounds good

Image closed temporarily corrugated blue sounds good, there is a wave of color display screen that moves. Damage such as this picture will emerge after the TV is set up for a while. While people think that this kind of damage because there is damage to the video ic, or ic croma / layperson would think the screen is broken. Apparently after I come across so many cases of this kind of damage is any damage to the filter regulator suply elco Ic croma. Damage is most visible elco with damaged eye that elco that changes shape, color elcon elco or physical disability, pregnancy or the skin would peel. Replace it all elco such disrepair that there is no sign that the new elco same value price is not expensive anyway, but in this elco replacement was to consider is the position of the negative and positive. should not be to the upside. So before you take off elco which would be replaced should be considered a positive negative position. (The upside of this could be put elco fatal damage)

tv there is sound but no picture

Damage tv there is sound but no picture, if the image does not appear the tv is turned on there is a sound like the radio, the screen does not come out the same light caecal like tv is not turned on, this kind of damage is common in some brands of tv. The layman thinks that the tv screen damaged or faulty IC picture. But from experience at my desk all this time I've encountered a lot of damage as it turns out the damage tv is not difficult. Ok. simply how to handle it Unplug the TV from the electrical contacts, and open stock closed casing. Clean the machine that much dust using a dry brush. Try Tv turned on and check the voltage G2nya good check to see if the filament voltage or hitler screen. For Lg Tv I was dealing with apparently normal G2nya voltage. After checking my screen turns filament voltage zero volts. And as soon as I noticed the filament screen does not light up at all, I just sort line and it is true there is a dropped Resistor, because the value of the resistor is not readable then I replace it with a 2.2 ohm resistor 2 what. Remember when replacing parts Tv must be switched off and be safe during the process of replacing the stock components tv relationships I unplug electrical contacts. When finished installing the new parts, I turn on the tv and have come up with the perfect image. Because the image is still good so I did not do scren setting and focus. My tv lid back and ready for submission to the owner as well as receive money.

Minggu, 09 Desember 2012

CRT connector loose

CRT connector loose
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.