TV Repair Questions? Ask a TV Technician
I have a 47" Vizio LCD that simply stopped working this evening. The screen is just black and the TV doesn't respond to any commands from the remote or from me pressing buttons on the front of the set. The only way I can get it to turn off is to unplug it, but once I plug it back on, it does absolutely nothing. Any suggestions?
Could you explain your situation a little more?
What is the model number of the TV? The model number will be displayed on a tag on the back of the TV near where the power cord is attached.How long have you owned the TV?What have you tried to correct the problem?
Do you have sound and are any lights lit on the TV? Thank you once again for trusting us with your problem.
You might wish to unplug the TV for an hour or more. If this power reset does not allow the TV to turn on, component failure is indicated. These sets are assembled using the wave soldering process, they are known for having cold solder connections. The safety circuitry shuts the TV set down or will keep it from turning on when it detects a problem. Power supply failure is a very common problem with this TV model. This model of TV has over 2,000 parts, which includes millions of transistors inside the integrated circuits. The capacitors will change value, leak and become defective. Capacitor failure is a common reason for the power supply to fail. Resistors will change value and burn. Diodes and IC can go bad. This may have a domino effect and cause other parts to fail. Replacing one defective part may make the TV operate for a short time but the part will fail again if the parts that caused the failure to begin with are not replaced. The only way to know for sure which parts that are no longer within factory specs and for a proper repair; all the electronics must be diagnosed by someone with the correct electronic test equipment specifically designed for TV service and the skills to use the test equipment. I wish I could tell you there was a quick fix or button to push that would fix the TV but that is not the case or the solution needed to get the TV operating correctly.Do you wish to repair this yourself or are you looking for an idea of what the cost to repair the TV will be? If you wish to repair it yourself what type of electronic training do you have? What type of TV test equipment do you own? Do you own and know how to operate an oscilloscope?Should you require further clarification, never hesitate to ask. It would be my pleasure to clarify my answer to your question.
I will expect this repair to be about $250 to $400 depending on how many parts are found to be out of factory specifications and if the board can be repaired or has to be replaced. A small TV shop will often charge less for the repair than a large repair facility.