help about Miner 4

[albert]

Dear all,
i made Miner 4 and i have a problem ;
when i start to search by coil 27*27 or 50*50 Cm after 1-2 minutes , MD LCD and Microcontroller operate bad and some times Hang occure and MD go to stop mode..!

also my MD has 1000 VPP - power signal and strong.

Many thanks for your giudlines ..

[homayoon]

HI albert
for removal problem hang :
1- checking at mega 8 (reprogram IC)
2- checking DC to DC module
3- checking wire coil don't to go near At mega 8
regard