JYE Tech Forum

already replied sir!

i dont know sire how to post images here :c can you gmail me sir?

how to post the picture here sir?

PLEASE HELP ME!
IM HAVING TROUBLE WITH MY DSO 138 WHICH I BOUGHT ONLINE
IT DOESNT RESPOND TO ANY SIGNAL INCLUDING THE INBUILT 1KHZ AND 3.3V
IT DOESNT SHOW ANY RESPOND WHEN I TOUCH THE PROBE
ALL THE VOLTAGES ARE IDEAL, BUT WHAT IS THE PROBLEM?

PLEASE HELP ME :C

i have a problem with my dso 138,
it has trace but it does not respond to any signal it gets,
it also does not display any freq. or voltage,
everything seems to work fine but i cannot also test the inbuilt signal for some reasons
i dont know why

can you help me? please.

im having trouble with my DSO 138 it has a trace and works almost perfectly fine i inserted 9v power battery to this scope and it shows the trace but later on it doesnt respond to any signal i test the in build signal and it does not respond but later on i find out it shows signal in 10mv in ac cpl,...

im having a trouble with my dso 138 it shows trace but cannot see the inbuilt test signal the 1khz and 3.3v it cannot also read other signals, lately i see it reads signals below 10mv in AC cpl, but it does not show any voltage at the upper top right corner? can you help me with this? please email m...