Anyone who owns a television knows that there are factors that determine whether you get the most out of your investment. A TV that isn’t working at optimal levels isn’t worth it and can real inconvenience. While many professional TV Repair Service providers in UAE will quick to advise you to replace your TV when it fails, the fact is that it’s not always necessary.
A TV that’s as good as new
Most people hesitate when it comes to fixing their TV because they assume it won’t perform at an optimal level. It’s true that most television parts are affected by age, you can get the quality and performance you desire when you get the best professional TV repair service in UAE. Most common problems stem from equipment parts or products dealing with poor solder connections. Technicians replace worn parts and reinforce connections with additional solder. This solves most problems and prevents future failures.
Replacing inferior parts that are used in circuitry helps improve the quality and performance of a TV. Using the best quality parts to replace the original ones greatly improves the operation of your television. A television that has been repaired by a qualified technician can last as long as a new one.
Factors affecting the life of your TV
There are various factors that influence the useful life of a television and they include quality of equipment, hours of use and technology. The manufacturing techniques as well as the quality of the parts will determine the duration of your television. There are different technologies such as LCD, CRT, DLP, LED and plasma, and they determine the quality of the TV. Heat generation affects the life of the TV. The more heat is generated, the more the parts are under stress. Most televisions have a lifespan of between 10 to 15 years with normal use and this usually includes at least one repair session.
Signs that show you need professional repair
If your TV has no light or clicks, it’s clear you need repair. You can do the following things.
- Make sure the power cord is securely plugged in and the power switch is turned on before calling for a professional TV repair service.
- If your TV turns off on its own, this is a tangible sign that you have a problem. Many new TV models come with an error code and you need to check the owner’s manual to find out what it means.
- If you have photos with no sound or distorted or weak sound, then your TV has a fixing problem. If the sound is bad or missing on certain channels.
- If the picture is missing or distorted, you have problems.
Before making the final decision, it is important to know whether repairing your TV profitable or not.
Power Supply Failure
Sure to discharge the input capacitors. See below. When the fuse is blown, it must change or replace with a new fuse. But that does not mean that the defect has disappeared. With the ohmmeter, after discharging the capacitors, it can be seen from the input plug whether the circuit between phase and between a phase and earth is a short circuit. U=RI in direct current, which is the case with the ohmmeter and also the first approximation in an established alternating regime. This means that the current I under U=230V will of the order of I in ampere = 230/R in ohm. So a measured resistance of 5 ohms would give over 40 amps! So there is no need to power up with a 5A fuse. You have to find the cause.
Otherwise, the fault is very frequently due to chemical capacitors whose value is no longer compatible: Swollen capacitors on the power supply board. But not always! A capacitor can deficient without showing this swelling. We are equipped with a tester to evaluate the capacitor without desoldering it. Pay attention to the risk of electric shock when handling the electronic board and its capacitors.
The accumulated energy is U²C/2 in joules: Umax is written on the condo: 25V, 2000µF for example gives a maximum of 25*25*(2000*10 -6 )/2= 625*0.002= 0.75 joules. Know that an electric fence gives an electric shock between 0.5 and 10 joules. Obviously, there are somewhere Umax is 450V (presumably it works at 250V). They have much lower values in general. For example 470µF. This gives in the worst case 450*450*470*10 -6 /2= almost 50 joules! 15 joules under 250V DANGER
Don’t hesitate to wait five minutes after the power cut and short-circuit the input phases (black female plug in the photo): this is where the capacitors are under 250V if there are any. has. They are the ones who can dangerous. The potentially bad guy in the photo is the big one marked “CapXon ”. Also, short the capacitor terminals. Normally discharged, nothing happens. Left charged, a capacitor will at worst spark and pop as it discharges.
Here are typical capacitor values.
Very far from these values? Of course, it needs to replaced. If the TV has reactions (warning light on, inclination to display), it is undoubtedly the “inverter” part that is in question. Make sure there is no voltage! It can thousands of volts here (plasma) and there, the U² becomes dangerous. But I haven’t delved into troubleshooting that part yet—if that’s possible. We are professional TV repairing service providers in UAE. In case of emergency just call us.