Good day gentlemen,is anyone who can help me how to trouble shoot my tm808 cave version is malfunctioning the problem is even i buy new battery and put to the battery checker the could not get to the yellow mark or 100% okey, it is only up 20 % or 2 on the gauge with a continued hamming sound and also it cannot detect.Pls. help me which parts are deffective?..I hope your kind help extend to me.You can email me [email protected] from philippines