mineoro fg/90

[taxma1981]

Originally Posted by brasilpb

private video, I could not see.

https://www.youtube.com/watch?v=fMzi...ature=youtu.be

[brasilpb]

Thank you friend, now I could watch the video.

[taxma1981]

This ist the circuit of the charger

[RIMES]

Hi,
The IC5 can be CA3130?

[Geo]

Hi.
You must know that FG90 can't detect fresh gold so don't worry for it.
I am afraid that the missing IC is a 555. If you measure the voltage at pin1 and pin8 and you read a voltage of 9V then it is a 555. If Voltage between pin4 and pin8 is zero but between pin4 and pin7 is 9v then it is a single op.amp as 3130, 3140, 741, TL061 etc try what you have.
Please inform us about the voltage results.
FG80 don't have the U5 and the other IC right of the ion chamber
Also inform me about the IC type (number.... right of chamber), i think that is a 324....

Regards

[RIMES]

Hi,
Thank you Geo.
Here is a picture of the ion chamber area, all their baseline IC are cleared as the photo shows.

[RIMES]

I measured the voltage between the pins 1 and 8, I found 9.70 V.

[WM6]

What a waste of electronic parts. Take it away, one could build something really useful.

[Geo]

Originally Posted by Behkli

I measured the voltage between the pins 1 and 8, I found 9.70 V.

Also you can measure at pin1 and pin4, must be again 9.7V. If yes then it is a 555.
I believe that it is an oscillator for an IR Led at front of pcb.
My opinion is that it is not neccesary to connect it.

[Geo]

Behkli, can you tell me who is the capacity of 3 yellow capacitors beside the toroid coil??

[Geo]

Originally Posted by WM6

What a waste of electronic parts. Take it away, one could build something really useful.

Hi Jaka.
In practice, Mineoro is a RF receiver. They can make it better but i think that they don't like a different design.

[RIMES]

Originally Posted by Geo

Behkli, can you tell me who is the capacity of 3 yellow capacitors beside the toroid coil??

Hi,
this device has been short circuited (poles inverted stack).
For yellow capacitors, the figures, I believe, are 103, 561 and 561 (very small).

[Geo]

Thanks for info about capacitors.
What do you mean with "device has been short circuited (poles inverted stack)", how poles inverted???

[Qiaozhi]

Originally Posted by Geo

Thanks for info about capacitors.
What do you mean with "device has been short circuited (poles inverted stack)", how poles inverted???

I think he means that the batteries were inserted the wrong way round.

[Geo]

Originally Posted by Qiaozhi

I think he means that the batteries were inserted the wrong way round.

Yes, but in who state is now, did he replace the voltage regulator or not.
From the voltage that read at U5 i believe that there is not any problem.

[RIMES]

Originally Posted by Geo

Yes, but in who state is now, did he replace the voltage regulator or not.
From the voltage that read at U5 i believe that there is not any problem.

I have not replaced the regulator, until now, I bought one today and I will have replaced and I will give you the result,
Thank you for all.

[Geo]

I believe that the voltage regulator is OK because output is near to 9V. If it was faulty then the out would be near to 18V or zero.
If you try to replace it try to take a photo of full pcb.
I must remember you that Mineoro detects only no iron objects buried many years ago (if weather conditions are good..... (temperature and moisture)), and not fresh gold as rings!!!.

[RIMES]

But watched the test for this device has been achieved on a ring.
https://www.youtube.com/watch?v=dBNvr7xpQwg

[RIMES]

Hi,
This is a full PCB of FG90

[Geo]

Originally Posted by Geo

I believe that the voltage regulator is OK because output is near to 9V. If it was faulty then the out would be near to 18V or zero.
If you try to replace it try to take a photo of full pcb.
I must remember you that Mineoro detects only no iron objects buried many years ago (if weather conditions are good..... (temperature and moisture)), and not fresh gold as rings!!!.

Yes, but if the video is True and not false (for promotion reason... to show how it works) then the ring is inside the sand for many years. A noble objects needs to be buried for many years so to create a big field called by many people (and me) "phenomeno".
You can check the Mineoro with a signal generator. Do you have one????

[Geo]

Thanks for photo of PCB but i need the component side.
Thanks

[Geo]

Behkli, look your email.

[RIMES]

Hi,
2 wires, one black and one red and they are go to the wood base of chamber. What is connected from the other side???
The 2 wires connected to the IR.

[RIMES]

if someone a question before reassembling the device,
Best regards.

[Geo]

Thanks Behkli
I would like a better photo of soldering side at the place of U6.
Also where is connecting (near to chamber) the shielding wire (Q ?
Up of the chamber are there 2 coils (rf chokes) or one with center tap???

Do you have signal generator to test the receiver of FG90?
As i calculated it is tuned at 34.5 Khz

Regards