Title: 6022BE defective. Question about diode [Print this page] Author: Can Time: 2017-8-10 12:00 Title: 6022BE defective. Question about diode Hello there,
I was using my 6022BE yesterday and accidently shorted out the probe with mains voltage (230V) which fried the oscilloscope. After opening it up and measuring some components I found out that the diode D1 was shorted in both directions, which results in a short to ground. I was wondering if I could get a part number for this diode so I could replace it with a new one.
Best Regards
Author: amy Time: 2017-8-10 13:35
Sir, the model of D1 diode is ZMM6V2. Author: Can Time: 2017-8-10 19:13
Ok that did not work. Would it be possible to get a schematic so I could check some power rails etc.? Author: amy Time: 2017-8-11 14:40
Sir, sorry, we can't provide the schematic.
Did you replace the D1 diode? Does the problem still exist? Author: Can Time: 2017-8-12 16:10
Yes I replaced it and the short was fixed, but I have a feeling that the usb controller might be damaged. I will check for other shorts to ground today and see if I can find anything. Author: amy Time: 2017-8-14 09:23
Sir, please check whether there is a short circuit between the four pins.
[attach]1668[/attach] Author: Can Time: 2017-8-16 17:02 Edited by Can at 2017-8-16 17:27
Yes they are all shorted out. Is the USB Connector fried?
EDIT: OK I just checked again and it is indeed not shorted. One of them is connected to ground the others are not. I got these results in diode mode:
1. 0,942V
2. 0,629V
3. 0,175V
I also connected the scope with another USB cable and checked some voltages. By doing that the computer registered a device, but did not recognize the scope properly.
This is the device manager. As you can see the computer can not recognize the usb device
Author: amy Time: 2017-8-17 09:06
Sir, please right click the unknown device to select properties, and give me a screenshot of the hardware id as the following picture.
[attach]1670[/attach] Author: Can Time: 2017-8-17 16:11
Is there a way for me to check the usb controller for functionality?
Here are some screenshots:
Author: Can Time: 2017-8-28 05:18
Could I get some help please? Author: amy Time: 2017-8-28 13:43
