TV with built-in power supply and additional antenna power supply

Hello everyone. I would like to know if I can connect an additional antenna power supply because the Samsung 43J5500 TV model, from what I found out, has its own power supply on the antenna, probably 5V. I have a mesh antenna installed on the roof at a height of about 5 m, and the cable from the antenna to the TV is about 15 m. When connecting the antenna without a power supply, theoretically it should not receive any channel and it searches for 13 channels, most of which are cut off. However, when connecting the old DVB-T overmax tuner, the tuner without a power supply does not find any channel, while after connecting the 12V power supply, there are 22 channels and everything runs smoothly. Can connecting such a power supply to a new TV damage the system or burn out the electronics? I will add that in the TV settings there is no option to enable / disable the antenna power supply

Measure with a meter!

If the TV set has the ability to supply voltage to the antenna input, there is no need to install an additional power supply. The most important thing is the voltage value of the TV set and the voltage of the possible amplifier in the antenna and whether it is needed, you did not specify your location in relation to the transmitter because it may turn out that the amplifier is not needed and everything will run on the basic installation.

After all, the power supply for the grid is with a separator.

There is nothing to think about, connect the power supply from the mesh antenna and watch. Programs should be 24 .

LeDy wrote:

There is nothing to think about, connect the power supply from the mesh antenna and watch. Programs should be 24 .

Possibly the MUX-L local might catch something

cysiu997 wrote:

When connecting the antenna without a power supply, theoretically it should not receive any channel and it searches for 13 channels, most of which are cut

Discard the amplifier, put on the impedance transformer for a test.

I am inclined to throw away any amplifiers.

You don't write where you live, but if it's Zielona Góra and its vicinity, then MUX3 at k.32 is very strong there.
In addition, there is 2.5 kW lighting on Ptasia, and this must completely distort any amplifier in the whole of Zielona Góra and its vicinity.
The TV you have is one of the newest from Samsung and is known to have very high antenna / cable requirements. Virtually any signals greater than 1 mV must wreak havoc.
If you receive anything with the power supply disconnected from the antenna, it means that the signal must be at least 10 times stronger, even without the amplifier.

If what the author writes about the power supply for the antenna amplifier built into the TV set is true, it must be possible to turn this voltage on and off in the menu.
In the Medion MD 30200 tv, which has this option above the antenna socket, there is a clear description: 5VDC-60mA and in the menu it is possible to turn this voltage on and off.

So far, I have not encountered TV power supply for an antenna amplifier and it is logical for me.

All Samsung G and J series have the ability to feed power to the antenna input. In fact, the tab for turning the voltage on and off is quite deeply hidden in the menu.
Now I do not have any Samsung at hand to lead "by the hand" and give the path.