Hi Dan, there is an IC that process HDMI signal that's located on the main board, it's a cheap part but unless you have advanced soldering skills and the equipment to change it you will destroy the board trying, in most cases a replacement main board is the way to go.
Hi Jason, unhook the connector going from the p/s to main board, plug the set in and see if you get backlights, if you do replace the main board, if you don't get backlights test the 13 volt supply, if it's good replace the main if it's missing, low or fluctuating replace the power supply, this is a very easy set to diagnose.
Have you tested the reset switch for continuity?? That would be the perfect place to start. If it's open, replace the switch, if you have continuity it's a board issue
Hello! Based on the issue you described with your Samsung UN65JU6500DFXZA TV, there could be a few potential causes for the intermittent black screen and loss of sound. It's difficult to pinpoint the exact faulty board without further diagnostic testing, but I can provide you with some information that might help.
In Samsung TVs, the most common cause of intermittent black screen issues is often related to the T-Con (timing control) board or the main board. The T-Con board controls the timing and signals that drive the pixels on the screen, while the main board manages the overall functionality of the TV.
Here are a few steps you can take to troubleshoot the problem:
1. Check your connections: Ensure that all cables, including HDMI and audio cables, are securely connected to the TV and external devices. Sometimes loose or faulty connections can cause intermittent issues.
2. Test different input sources: Connect various devices (e.g., DVD player, game console) to different HDMI ports on your TV and see if the issue occurs with all of them. This can help determine if the problem is specific to a particular input or the TV itself.
3. Perform a power cycle: Turn off your TV, unplug it from the power source, wait for a few minutes, and then plug it back in. Power cycling can sometimes resolve temporary glitches in the TV's system.
4. Factory reset: If the problem persists, you can try performing a factory reset on your TV. This will restore the TV's settings to their default state. Note that a factory reset will erase any personalized settings or saved preferences, so make sure to take note of your settings before proceeding.
If none of the above steps resolve the issue, it's recommended to contact Samsung support or a professional technician for further assistance. They will have the expertise to diagnose and repair the specific problem with your TV.
Please keep in mind that without a proper diagnosis, it's difficult to determine the exact board that needs to be replaced. It's always best to consult with a professional technician who can examine your TV and provide an accurate solution.
I hope this information helps, and good luck with resolving the issue with your Samsung TV!
t's possible that the 5-year-old accidentally changed the input source on the Samsung TV, which is why you can't get the Fire Stick to work. Here are the steps you can follow to switch the input source back to the HDMI port where your Fire Stick is connected:
Turn on your Samsung TV and your Amazon Fire Stick.
Using your Samsung remote, press the "Input" button.
A list of input sources should appear on your screen. Use the arrow keys on your remote to select the HDMI port where your Fire Stick is connected. The HDMI port may be labeled as "HDMI 1," "HDMI 2," or something similar.
Press the "Enter" or "OK" button on your remote to select the HDMI input source.
Your TV should now switch to the HDMI input where your Fire Stick is connected, and you should see the Fire Stick's home screen on your TV.
If you're still having trouble, try unplugging the Fire Stick and plugging it back in to make sure it's properly connected. Also, make sure the TV and Fire Stick are both updated to their latest software versions.
You have a bad COF IC on one of the panel boards, this is shutting down the power supply from over current, bad news is the set isn't repairable, you would need a new panel to fix the set, you won't find one anywhere.
You will need to unplug your TV from the power outlet and any power source for about 1 minute,then plug it back in. Check to see if the HDMI cable is properly connected.Or change it to a different socket. Do a factory reset.
Samsunghttps://www.samsung.com > ... > TV & AV
Apr 13, 2023 - Troubleshooting. 1 Check whether the lines on the screen are moving or permanent. 2 If the lines sway, check the input source (HDMI 1, Video, ...
Have you tested the backlights by removing the connector going to the main from power board, this will tell if the hot side of the power board is working and you will get backlights if they work?
This sound like an issue with the x-main board, if you unhook the power cable going from the power supply to the y-main board and you get VA and VS voltages there is about a 95% chance of the power board working ok, both the x and y main boards in this model set gave issues, one problem is going to be finding a board at a decent price, you can troubleshoot the board yourself, it's generally the mos-fet's that short, the ones that are attached to the heat sink. If you find some bad, replacement parts can be obtained from Mouser for a few bucks, they're easy to change with a soldering iron and some solder wick or sucker
