mineoro fg/90

[abdou2014]

I confirmed that my friend's FG90 has a problem, even if I make it move towards the sky, and even by decreasing the sensitivity to 10, the slightest movement gives beeps

[Pahom]

Originally Posted by abdou2014

I confirmed that my friend's FG90 has a problem, even if I make it move towards the sky, and even by decreasing the sensitivity to 10, the slightest movement gives beeps

The device may have mechanical problems. Pay attention to the resistance of the case to mechanical movements when holding the device by the handle of the holder. Or turn on the device, place it on a flat surface, hold the body with one hand and, without fanaticism, press left and right on the handle by which you hold the device. This is one of the most common reasons.

[FrancoItaly]

Originally Posted by Jeg

Franco's receiver doesn't look like an electrostatic receiver. It is more an electric field meter. It creates an oscillation at the input and device traces any possible offset of the waveform. The number of transistors determines if it will catch a negative or a positive offset. In Franco's case it detects the positive side. And so the increase in signal when the antenna looks at the negative source target...


IR leds is a none working mambo jumbo tech which works very good as a bate!

I think my lrl is a passive electromagnetic device, the internal oscillator only serves to create a reference signal for the mixer, while the phenomenon is in the FM range, the L / C values prove it.

[abdou2014]

I did the handle test and there is no beep , only with full movement of the device , thank you for your help

[Geo]

Hi Abdou.
Its difficult to repair the lrl from distance, this must be maken by you.
FG90 has 3 detectors. You must isolate every time the two detectors and let only one to work so to understand where is the problem.
First detector is the receiver on the board FG38679B.
2nd is the ion chamber and 3th is the magnetic receiver at right side of chamber.
For begining desolder the red wire of ion chamber and take out the IC of the magnetic receiver.
Move it to see if you have random beeps.....

[abdou2014]

Thank you very much Dear friend , I don't know where to start, I'll take your advice ,

[abdou2014]

- I cut the red wire of the ionic chamber and I removed the IC from the magnetic receiver

- when the switch (deep sensitivity) is in the ( normal ) position , no beep when the device is

in movement

- when the switch (deep sensitivity) is in the ( high ) position , beep in any movement even

with low sensitivity

[abdou2014]

I put the magnetic IC in its place, the device is always stable and silent in mouvement

and that with (deep sensitivity) in the ( normal ) position ,

this deduces that the parasite came from the ionic chamber ?

[abdou2014]

I also want to know is it still able to detect the phenomenon without the ionic chamber ?

how reliable and how far can it detect a treasure without the ionic camber ?

Thank you !

[abdou2014]

I tried them yesterday, it was windy and it gave false beeps , I want to know if this is normal?

[abdou2014]

Hi, I cut the red wire and the parasite is still there.

[abdou2014]

now i remove the IC in the right , the magnetic circuit works, I don't know if the removed part is essential to capture the phenomenon???

[abdou2014]

I think the IC on the right is part of an electrical receiver with ferrite, preamp and amplifier, it is associated with the resonator stimulator , I think it's the heart of the device ,

[Pahom]

Originally Posted by abdou2014

I think the IC on the right is part of an electrical receiver with ferrite, preamp and amplifier, it is associated with the resonator stimulator , I think it's the heart of the device ,

Above the post, in your photo there is such a powerful toggle switch, what role does it play?

[abdou2014]

I think it is to connect the stimulator signal with the magnetic receiver , I haven't put all the pieces of the puzzle together yet.

[Pahom]

Originally Posted by abdou2014

I think it is to connect the stimulator signal with the magnetic receiver , I haven't put all the pieces of the puzzle together yet.

What puzzle are you writing about if you have a device on hand. The heart of the device is a generator (capacitive three point Colpitz.)

[abdou2014]

explain more , you mean the loop input , first stage colpit oscillator ?
what mean ( capacitive three point ) ?
yes the device is in my hand

[Pahom]

Originally Posted by abdou2014

explain more , you mean the loop input , first stage colpit oscillator ?
what mean ( capacitive three point ) ?
yes the device is in my hand

The Colpitz oscillator (capacitive three-point), named after its inventor Edwin Kolpitz, is one of many electronic oscillator circuits that use a combination of an inductance (L) with a capacitance (C) to determine the frequency, also called an LC oscillator.

[abdou2014]

Thank you professor

[abdou2014]

if you insinuate that the resonance frequency is the centerpiece of the device, you are mistaken ,

[Pahom]

Originally Posted by abdou2014

if you insinuate that the resonance frequency is the centerpiece of the device, you are mistaken ,

Good ! Good luck with your setup then!

[abdou2014]

Thank you my friend

[abdou2014]

by removing the IC from the ferrite circuit on the image the device is very stable and the magnetic circuit works, it detects a 1.5 v battery from 1.3 meters
I need Geo's opinion, to know if the device can still capture the phenomenon without the removed part

[abdou2014]

I noticed the offset of the sensitivity adjustment point of the potentiometer one goes back, this means that the signal injected into the input of the magnetic circuit is cut

this means that the magnetic receiver is less sensitive, and that it cannot detect changes in the signal from the resonator or stimulator

[shahrayar]

Originally Posted by abdou2014

now i remove the IC in the right , the magnetic circuit works, I don't know if the removed part is essential to capture the phenomenon???

Where did you get the scrap?