help for reapir garrett grand master hunter cxii

[Qiaozhi]

thanks for your help

in this picture TX start is wite and RX start is black right?

what is mean of "screen" in tx?

The "screen" is the Faraday shield around the coil, which is also connected to the shield of the coil cable (0V).

[saber]

Hi

I connect the batery opposed and the sound is gone!

I check speaker and wires, they are fine

When i turn it on its not working

What is the problem? Is it dead?

Please help me

[Mrand]

I have request to Saber. Can You measure resistance of the shielding foil in the "Crossfire" coil?
Mrand

[homefire]

Hi

I connect the batery opposed and the sound is gone!

I check speaker and wires, they are fine

When i turn it on its not working

What is the problem? Is it dead?

Please help me

If the detector seems to be working just no Audio Check the Final Transistor to audio. MPSU-45 ?

[saber]

If the detector seems to be working just no Audio Check the Final Transistor to audio. MPSU-45 ?

my Final Transistor is MPSA13. i change it to MPSA14 but still nothing

on the pcb there is a OP37G . is it the audio chip?

I'm afraid its dead

before this i connect two 3.7 li-ion batteries to machine, is it the reason?

[saber]

Please help me

[kt315]

please help me

again guys I URGENTLY AND URGENTLY ask you do the images more legible.

please do these step by step!

1. wait clear sunday time. the sun must be VERY OPEN!
2. GO OUT from your home, at your homeyard, at the sunlight.
3. place PCB so the sun light will be from left upper PCB corner.
4. the shadows must be short, but they must be!
5. do a photoshooting.
6. you have NOT EVEN A TINY CHANCE here to get the answer if you are doing your Home Work poorly and woorse.
7. set your camera on high resolution. your pics has to be from 5MB and more.
8. send your pics to [email protected] with subject in subject field:
new hires pics of board [detector model name] for your collection.
9. Forget your egoistic intentions only take on and give nothing in return.
do not cultivate your EGO here.
10. do not waste your time making pics in your room. you will get only trash absolutely
unusable. yes, you and me are not professional cameraman and have not the needed
light pro equipment on your working table, so keeping some rules i offer and you will get perfect pics and btw will learn how to make perfect photos of your family,
lovingyou, children and the Nature itself. BELIEVE ME thats is EASILY!


GOOD LUCK IN THIS YOUR NEW HOBBY.