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I'm not sure to modify silverdog pcb components before that all right working!
I have read for one night idx-pro-vdi thread but i don't found anything about where i can start for check this pcb!!
Can you give me some info about correct voltage value around the ic's pin's and transistor's??
Surely my coils are not nulled properly and poorly made, but why in first time the detector started with audible sound and recognize large object like cellphone?
I want to make it work......please
Thanks lot for help!!!
Andrea.Leave a comment:
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you need to read those threads from start.
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For first...Thanks for help!
My doubt is that before worked but in a strange way and with little sensitivity, after i unmount and remount ic's i have no sound with the same coil and capacitors!!
My RX have approx. 30 mH for Tx approx. 0.600 mH
On pin3 i have 0mv and on pin6 190mv measured with circuit ground, instead with - from power supply i have 4.02V on both pin's
Thanks lot for your help!
Andrea.
I'm sorry!! I have checked u1 pin3 with ac set voltmeter and measured 200mv alternated current!Leave a comment:
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Rx wire should be max 0.20, ideal 0.15 - 0.18.
IDX is not machine which is tolerant on unbalanced coils...
How much milivolts u have on U1 pin 3?
Give more informations, coil inductances, voltages...Leave a comment:
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I need help with idx pro silverdog red pcb!!
Hi Guru's my idx pro not work but i have no idea where begin to control this circuit!!! I have only checked the + and - rails on the ic's and all seems ok, but no other check i have made. i did a 27DD coil with wire that i had in home... for tx 0.55 and rx 0.35. When i have turned on i heard a single beep and in range of 13cm far detect a cell phone. i Turned off and pull off all ic's.... i remounted ic's and from then on i did not have audio signal.
Where do I start checking?
Thanks to all those who want to help me!!!
This is my pcb
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