Hello,
I am asking you to move forward on several issues.
First this oscilloscope did not start at all.
I found the failure by dismounting the main acquisition board which had a capacitor on the burnt-out, short-cuircuit -12v. Now power supply OK, it starts. All voltages controlled. Good!
Of course on 2nd failure, the disc is completely? mechanically out of order. To be see later so disconnected at this time.
Now on the outside screen, i have the bios and its errors.
I have the impression that the retro lighting does not work (in theory powered by 12v and give HT.) LCD screen? black. I don¡¯t think there is a feature that starts the retro backlight later.?Can you confirm that it simply starts basicly when power on.
As, there is no keyboard, I wanted to plug one.It ¡¯s a 5-pin din on an Atlas 757 PCI3 board. So I adapted the cable of a PS2 keyboard? (cut + welded a din).?It initializes (flash of the 3 leds at power on) but after? impossible to communicate.
So is the keyboard accounting AT or XT, it¡¯s not the same protocol ? Somebody have made the test?
So for that i am? blocked for the bios
Thanks for your answers
cdt
Gerard