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Thanks.

I got something else replacing 750 ohms resistor with 650 ohms thanks again.

Thanks for your replay timo w , yes the cap is ceramic type , so i will put a 334 cm instead.

Hello. Maybe im posting on the wrong place sorry in advance if it is the case. I need to replace a 474 capacitor but i dont have this value in my spare box , can i replace it with 472 or 473 capacitor because i have those two values in my spare box thank you for any help.

You asked me to set at 0v , the trace line should be on the butom.

Hi dave i m back , how would you like me to the scope, i put V on 1v time(s ns) ? I made a lots of tests yesterday and i confirm that there is a signal which is present on pin20 of z80, it can be visible if i put for exemple settings 500ns 100mv if i put 1v the signal becomes a straigt line.

I will post tommorow, Have a good evenning.

I think my scope does nt have 0v option i could nt find it.

Sorry for your time, i have to read the manual.

Pin 20 z80 after playing with setings.

Blye arrow on top of the screen.

The blue arrow i can move it right or left hand side, were it should be on the middle?

I took ground from socket gnd.

If i move arrow all the way at the right side

But i ve measured without ground from the programmer.

Ther is a little potentiometer on the probe.

I foun my scope booklet, i need to set it on 0v ?

i ve got same thing.

Im using windows10 OS

Ok that s it i burn it to the 2764 with 0000 offset, now its on the u8 socket on the programmer.what i should do now?