Replacing Antenna Amplifier in Telmor ASR Classic LTE Protected Model - Guidance Needed

Hello
Please help.
I have had an ASR classic LTE PROTECTED SAW antenna for a year.
I have had weaker channel reception for a week, not all multiplexes are working.
The power supply and other network elements have been checked.
Is it possible to replace the antenna amplifier in this model?
I can't find information on how to "get" to the amplifier in the antenna.

antenna data
Receiving frequency range MHz 470-790 *
Gain dB @ MHz 14 @ 470-782
Gain in the operating band dB 19
Attenuation out of operating band dB @ MHz 26 @ 800
Polarization / Horizontal (H)
Beam width 3dB (horizontal plane) ? (deg) 40
Radiation ratio - front / rear dB 24
Noise figure dB ?3.5
The maximum level of the TV signal at the output
(DIN) dBuV 100
Power supply / current consumption V / mA +5 .. + 24/40


adapted to receive digital terrestrial DVB-T signals,
has a built-in 470-790MHz band-pass filter,
can work as passive or active,
has a very high energy gain, and a built-in ultra-low noise preamplifier,
aesthetic and durable structure,
powering the preamplifier with DC voltage in the range of + 5... + 24V.

DawidPL123 wrote:

I have had it for a year ASR classic LTE PROTECTED SAW antenna

DawidPL123 wrote:

Is it possible to replace the antenna amplifier in this model?

Yes. You have a guarantee, so on the manufacturer's website.
Disassembly requires unscrewing the plastic carrier from the blue beam. Then this one plastic carrier you need to unscrew it and gently split it in half. Amplifier it is in this spherical dome.
But your antenna

DawidPL123 wrote:

it can work as passive or active

so it has an amplifier with the so-called by-pass. And I have not met such in trade. For example, when asked about such an amplifier, in the company store I received the answer that the antenna should be returned to the manufacturer for repair. Alternatively, ask directly in Telmor.

DawidPL123 wrote:

The power supply and other network elements have been checked

How did you check this power supply? The lit diode does not mean that everything is OK.

The symptoms are that the antenna was working all the time, the reception deteriorated on one day, I checked the installations and everything seemed ok ... except for a small detail.
When the power supply is turned off, I receive almost all multiplexes (not 100% as it was before the failure), only local MUXes are jammed. When I put the power supply into local networks, there is no ... I will add that so far, the power supply has always been on for a year of using the antenna. I did a test with a different power supply and the same effect: /

DawidPL123 wrote:

in one day the reception deteriorated

DawidPL123 wrote:

When the power supply is turned off, I receive almost all multiplexes (not 100% as it was before the failure) only local MUXes are jammed

Maybe they've recently turned on a BTS in the area and distorts your signal on the amplifier.

Start by substituting the power supply.

Quote:

I did a test with a different power supply and the same effect: /

New or used power supply? If it were new, you might have distorted. See adjustable power supply.

I did the tests on the power supply used from the old antenna. Shouldn't this antenna be "immune" to BTSs? the image cuts a strength and the quality of the signal on the tuner 80-90% without a power supply.
Try a power supply with regulation?

DawidPL123 wrote:

Try a power supply with regulation?

DawidPL123 wrote:

powering the preamplifier with DC voltage within the range + 5... + 24V

_kli_ wrote:

powering the preamplifier with DC voltage within the range + 5... + 24V

[/ quote]
What does this quote have to do with it? And in antennas with 12V power supply it can be done. This is my proven method of "matching the amplifier" to local reception conditions.

Quote:

I was doing on the power supply used from the old antenna

And that's the cause of the failure.