led tv repair no sound no picture - පහසුවෙන් LED TV එකක් හදමු

#panel_repair #backlight #no_sound #no_picture #standby_ok How to replace Tv Led Backlight? Backlighting is at the heart of how TVs work. ............................................................................... TVs work by allowing a filter system on the back of the display to generate the image seen on the screen. However, if the "backlight" is damaged or stops working, the owner may be left with a very expensive paperweight. No need to buy a new TV, just a few steps to replace the backlight. Step 1 Remove all screws on the back of theTV. The number of screws will vary by model, however, the screws are usually located around the edge of the rear case. Gently lift the rear panel away from the monitor and remove any metal pieces underneath to expose the TV's internal components. Step 2 Locate and remove the backlight from the LCD. The backlight will be a slender tube in a clear plastic case. In a well-ventilated area, use a dremel tool to carefully cut into the end of the plastic housing closest to the end where the tube lead connector enters the plastic housing. Step 3 Use a hair dryer to heat the area where the tube wires go into the plastic casing. Once the glue holding the wires in place is hot enough, carefully pull out the wires and tubes. Use extreme care when handling backlight tubes, as the presence of mercury vapor can pose a health risk if the tubes are damaged. Make sure to perform this step in a well-ventilated area. Step 4 Unscrew the reflective strip and reinstall the new backlight just like the old backlight you removed in step 3. Reattach the reflective strips to the monitor and screw the LCD TV's housing back into place. Thank you !! for watching , like , comment and share my videos. Please subscribe my channel to get daily new videos

How to fix vertical colorful bar and lines LED TV - led tv ගෙදරදීම හදමු

#led_tv #Hisense_led_tv #vartical_line #panel_problams #colorful After a year or two or owning your Hisense TV, vertical lines can start to show on-screen. Many people choose to chuck their TV and get a brand new model, but it’s actually very simple to fix Hisense TV vertical lines. Hisense TV Vertical Lines on Screen To fix vertical lines on a Hisense TV, check all HDMI and signal cables are securely seated with no oxidation on their contacts, then power cycle your TV to reset it, unplugging it from the wall for 30 minutes and holding down the TV’s power button for 15 seconds, before plugging it back in. In the vast majority of cases, this will fix your Hisense TV, but in case you still see vertical lines, or if you need more info on how to apply the fixes above, then you can follow the detailed steps below to get your TV working again. This guide will give you all the necessary know-how to fix this yourself and get your TV back up and running again without needing an expensive replacement. 1. Power Cycle Your TV Running your Hisense TV through a power cycle will help to clear any potential issues that could be caused by its capacitors retaining charge or internal flash memory holding onto a glitch that is causing the vertical lines. This is quick and painless and won’t cause you to lose any of your saved settings. Unplug your Hisense TV and hold down the physical power button beneath the IR receiver on the TV for at least 15 seconds. Wait for at least 30 minutes for any residual power to drain. Plug your TV back in and try switching it on. You should see a red light if you have been successful. Although this seems a very basic step, don’t overlook it because in the vast majority of cases a simple soft reset fixes most issues. 2. Unplug Your HDMI Cables There’s a strong possibility that a poorly seated cable is creating signal noise which is displaying as vertical lines, and is also a common cause of horizontal lines on Hisense TVs. Faulty HDMI cable with a break in it Damaged HDMI port with broken pins Poor HDMI connection where the cable and connector are not fully making contact To check your HDMI and other cables: Switch off your TV. Remove any HDMI or other physical cables connected to the back of your TV. If you have any compressed air, use that to clean the contacts both of the cable and in the connector on the TV. If you don’t have compressed air, then blow gently on them. Firmly push the cables back into their slots on the TV. Switch your TV back on again. It that hasn’t fixed the problem, then try using a different HDMI input. Most TVs have 3 or 4 HDMI ports. Update Your Firmware Software and firmware issues have been known to cause problems with the display on Hisense TVs. As with any product, you should ensure that you have updated your TV’s firmware to the latest version, even if it is new. Most Hisense TVs support auto-updating of firmware, but you can’t assume that this is turned on for you. Check Over-the-Air (OTA) firmware updates are enabled for Smart Hisense TVs by pressing the Home button on your remote, then go to the “cog” for settings, then Support and System Update. Make sure the Auto Firmware Upgrade is enabled. If your TV doesn’t have OTA support: Press Home on your remote. Click the “cog” icon. Go to All. Then About. And System Update. Click Detect to check for updates. For older Hisense TVs, even this option for updating your firmware might not be available. In this case, you need to download the latest firmware and install onto a USB stick to install it manually on your TV. Call Hisense Support and they will be able to guide you through the process. Try Reseating the T-Con Cable The Timing Control (T-Con) board is a small PCB board that drives your TV’s panel, translating the signal into a picture on your screen.It’s hidden away under the back panel, behind the screen, and is a regular source of vertical lines in TV images because it connects to the LCD / OLED panel with ribbon connectors which can come loose. To access the T-Con board, you need to remove the back panel. If you’re not confident doing this, then now is the time to get an expert in. Otherwise: Unplug your TV, hold down the power button and wait for at least 30 minutes. There are large capacitors in the power board for the backlight and these can hold charge for an extended period of time. Place your TV face down on a large table or workbench. Make sure there is nothing that can scratch the screen on your work surface. Ground yourself. Open your TV by unscrewing the screws in the backpanel. It should come apart in two pieces: front and back. Put the back panel somewhere out of the way and take a look at the circuit boards that have been revealed. You will see a T-Con panel for translating the signal into a TV picture, a power board and a motherboard board. Thank you !! for watching , like , comment and share my videos. Please subscribe my channel to get daily new videos