There are usually several explanations why a person should replace or repair a LCD TV power supply mother board. The main signals that the energy mother board should be serviced are that the TV powers on / off intermittently, or that it requires quite a while to get any reception when the recharged ability is fired up. Luckily, this kind of problem is rather common and easy to handle if one has some basic knowledge of electronics. This repair also requires a good comfort level with by using a soldering iron. Before beginning, a purchase of electrolytic capacitors from an hardware or gadgets store is essential.
UNPLUG ANY DEVICES AND POWER CABLES TO REMOVE BACK PANEL
Start by unplugging it from its ability source. Disconnect any extraneous devices. Place it face down on a set surface to avoid doing any harm to the LCD display. Utilizing a screwdriver, release all the screws on the comparative back again -panel of the display. After the screws are loose enough to wriggle the panel from the front portion of the screen, take away the back panel and set it aside
TAKE OFF THE CIRCUIT BOARD
Locate the charged power supply board by following which circuit board the power cord is linked to. Utilizing the soldering iron, disconnect all the screws and connectors from the board, taking care to note wherever they originated from, as they shall have to be reattached when the repair is performed. After the connectors and screws are unattached, gently take away the appropriate circuit board from the machine.
FIND THE MALFUNCTIONING CAPACITORS
Find the cylinder-shaped nodules of differing levels and widths. They are the capacitors plus they should have a set top if they’re operating correctly. In case the capacitors are bulging or curved and bent at the top, it can be an indication they have overheated. This is actually the reason behind the malfunction.
At this true point, remove all the malfunctioning capacitors and replace them with the new ones. Take the time to keep an eye on negative and positive polarity through the alternative. When there is uncertainty about the soldering, placement or polarity of the capacitors, take the energy board to an area electronics store and also have them handle this stage of the repair.
REBUILD AND CHECK POWER
Replace the connectors, screws, back again panel and cord. Check to see if the challenge has been resolved. When there is problems still, maybe it’s credited to a costed vitality surge that brought on a blown fuse. To see if this is actually the full case, use an Ohm meter.
IN CASE THE PROBLEM PERSISTS, TEST THE FUSE
To check the fuse, choose the appropriate Television fuse from an area electronics or motor vehicle repair shop. Once take away the electric power source again, back panel, screws and power mother board and test the continuity of the fuse with the ohm meter. Take away the old fuse and replace it with the new one. Reconnect the cords, connectors and back again panel and switch on the TV. If the condition is fixed but the fuse blows shortly afterward again, it’s likely that the energy supply must be changed. If one is experienced at gadgets repair, he is able to order a fresh power and replace it himself. It is fairly simple to do and power supplies are incredibly reasonably priced usually. Alternatively, take the resource plank to an area Television set or hardware repair center to keep these things do the replacement unit.
REPLACE THE PRIMARY CIRCUIT BOARD, IF NEEDED
If none of them of the fixes appear to do just fine, an added option to try is updating the key circuit table. If this element is damaged, nothing works on the TV correctly. But all is not lost. Like the connectors just, power fuses and source, the key circuit panel can be changed if necessary. Consult with a TV repair center for guidance how to replace the key circuit board.