I have 16 ch dvr model no da 7b16 HQHI K1 when power on its gives beep sound only .but some time display comes . when ever restart dvr no display I changed all capacitor 16v /220uf with 25v/220uf But no use what have to do
sir dvr ka pasword change kiya software sa lakin jab dubara off hoky on hota ha to pasword change ho jata ha default pasword pa chla jata ha jo mojay nae pata kaya waja ho sakti ha