Hi Jerry, you have what's called the "blue screen of *****". This model Hisense set is known for panel failure and you have about a 3 out of 4 chance of that being the issue and the set not being fixable. What you can do to troubleshoot the set is unhook one of the ribbon cables going from the tcon to panel board, power the set up and see if you get half a picture, if no picture hook that one up and unhook the other ribbon cable and see if the other half the picture works, if you do, the panel is bad. If you don't see half a picture, and you have a multimeter you can test the SMD capacitors on the panel boards for one that's shorted, if you find one or more shorted remove it with a needle nose, the set will work without the caps.
I've answered several related questions on the Hisense sets with R6E3 as the letters and numbers following the screen size. This series of sets have panel issues, the COF IC's are defective and they aren't replaceable, chances are you will need a new TV
In this case and on this brand set it's best to replace all the strips, if you only replace the bad one. or ones the anothers will fail in a few weeks to months so it's back to square one with needing to open the set up and lift the panel and replacing the bad ones again, also it's cheaper to replace them all than one at a time in most cases, you most likely will find several strips that have shorted diodes that will need replacing, it's seldom just one diode that opens up making the picture black. Also when handling the screen use extreme caution, it's VERY fragile and sensitive to static that will damage the panel boards, making the set not work once it's back together. You will get backlights but have what's called the blue screen of *****, then the money was waisted attempting to repair the TV with new lamps. Hope this helps, I apologize for the answer bots on this site that give generic non helpful answers, wish their tech department could do something to stop them but so far it hasn't happened.
Question edited for clarity.
Although I had Sky in the UK before I moved to Canada, I am not conversant with this infra-red device. Scanning on a television is normally reserved for over-air signals via an aerial. Picking up specific device is via HDMI inputs, via Bluetooth or via other devices that are connected to your home WiFi network that the Smart Television can see.
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It could be caused by problems with the TV's cable connections.Or problems with the input devices.Or the firmware is outdated.The power supply board could be bad.
If it's Hisense it's most likely backlights that are bad, average life of a Hisense TV is 26 months, needless to say there are betters sets for the money. There are 2 choices with your TV, order backlights from shopjimmy.com and change them yourself for around $100 with shipping or recycle the TV as it will cost around $400 to take it in to a repair shop for service, might as well buy a new TV then. If you decide to repair it yourself you will need suction cups to handle the panel, without you most likely will damage it, another downside to Hisense is the panels are very thin and very fragile
My first thoughts are to recycle the TV and buy another as this model was plagued with problems. But if you want to fix it you will need some voltage measurements, the 5 volt standy is good since you have standy lamp, the 1st voltage reading would be on the power board connector going to the main board, look for a terminal marked ps-on, pwr, pr, or something that starts with a p, turn the set on at the tv or remote and look for 3 vdc there, if you don't see it replace the main, if you do message me back and I'll get you more info on what to test next but I don't you will find this voltage.
The best advice you can and will get is to replace the backlights, these need to be replaced as a set not just the individual strip thats open. In this set there will be 3 sets of backlights, each set wired in series, like Christmas tree lamps, if you take one bulb out the entire string quits lighting. So your saying ok I have one bad bulb making that set not work but why don't the other 2 light, the reason is, the backlight inverter is a part of the power board, it has shut down capabilities for safety reasons, the voltage on the set with the open lamps is going to be higher than it should be, the PWM circuit shuts down the entire backlight voltage, not just the string that's open but all of them, it's how most lower end sets work, now on higher end sets such as Samsung, LG, Vizio ect you can have one strip or set bad and the rest will still work. Hope this sheds some light on what's making all the lamps not light.
How old is it? They are not the best sets even when new and they certainly aren't made to last. It sounds like the Power Board has failed. Did you try a Power Reset? Remove the mains plug for 15 minutes, press and hold the On button for 12 seconds as you plug it back in.
Hisense TV forgot password
The easiest first step to unlock your HISENSE H65U7A password is to call back, or send a message to the former owner. However, he or she may have forgotten it! In that case, do not get upset. The default codes are 0000, 1234, 1111, 7777 or 9999.May 23, 2018
it's not possible to confirm the capability of the Hisense 22 inch HSL5529HDI TV to support a 15Hz RGBs signal through its VGA port without access to its specifications.
However, most consumer-grade TV sets are designed to work with modern computer and video signals, which typically have a refresh rate of 60Hz or higher. They may not support lower refresh rates like 15Hz, which is a relatively old standard.
I would recommend checking the specifications of the TV or contacting Hisense directly for more information on the TV's capabilities and compatibility with older systems and their RGB signals.
A blinking red light on the power button of a Hisense 55 inch model 50R6E3 TV could indicate a problem with the TV's power supply. It could be caused by a malfunctioning component, such as a blown fuse or failed capacitor, or it could be an indication that the TV is overheating. In some cases, a blinking red light can also indicate that the TV's firmware is not up to date and needs to be updated
First thing to do is put the original boards back in the TV, none are bad, you have defective LED strips in the panel, real common issue with this model set, the power supply inverter senses the over current and shuts down, you get the blinking standy light when this happens
If your Hisense 55-inch 4K TV with Android is turning off randomly, and you have found that the power supply board is wet, it is likely that the issue is caused by a problem with the power supply. Replacing the power supply board may resolve the problem, but it's important to consider the following before making a decision:Safety: If the power supply board is wet, there is a risk of electrical shock, so it is important to make sure that the TV is unplugged and that you take appropriate safety precautions before handling the power supply board.Root cause: The problem could be due to a leak or another issue that caused water damage to the power supply board. If the root cause of the water damage is not addressed, the new power supply board may also be damaged.Difficulty: Replacing the power supply board can be a difficult task, and it requires some technical knowledge and the right tools. It's important to make sure that you are comfortable with the task and that you have the necessary tools before attempting to replace the power supply board.Cost: replacing the power supply board may not be a cheap solution, and it may be more cost-effective to consider a new TV.It's important to have a professional technician to check the TV and confirm if the power supply board is the issue and if it needs to be replaced.If you're not comfortable with the task of replacing the power supply board, it's best to contact Hisense support for further assistance or have a professional technician to check the TV.