Hantek DSO5102P CH2 Failure (bis)

ghs

Hi,
My DSO5102P's second channel doesn't work anymore: it reads -104V from its generator, and -4.24V when I probed the ground. Self-calibration yields error code 0x10c00 and I can't return it... Could you tell me which parts I should replace, please?

xfmrengr71

I use my DSO very little, it might have 10 hours on it.  A few months ago, I turned it on and it booted up.  Several minutes later, the screen went dead and unit was unresponsive.  After many failed attempts, I stopped trying.  I tried again several months later and I got it to boot up and then after a few minutes it is unresponsive again.  The following lights/buttons are on and unresponsive: Green light to the left of V0, CH1 Menu, Math Menu, CH2 Menu, Auto Set and Run/Stop.  Screen is totally blank and fan is running.  I have checked all the voltages out of the power supply and the only voltage that seems out of whack is the +9 volt as it is at 6.53 volts.  This feeds a 5V regulator and the output is 5.0 volts.  

Thanks

xfmrengr71

Sorry about my post, but half this website is in Chinese and I cannot post.  If someone could post for me, I would appreciate it.  I have a Hantek DSO5102B.  Thanks

amy

Sir, sorry, we do not see the motherboard, we can not judge the specific problems.

amy

xfmrengr71 replied at 2018-6-15 09:16
I use my DSO very little, it might have 10 hours on it.  A few months ago, I turned it on and it boo ...

Sir, please take a picture of the power supply about the incorrect output point of the voltage.
And upload it to study.

ghs

amy replied at 2018-7-2 10:35
Sir, sorry, we do not see the motherboard, we can not judge the specific problems.

Hello,
Here are the picture I' finally took: https://drive.google.com/drive/f ... g9Y8G8FG6K-vlRbr2ps. It looks like I've fried a relay...

amy

ghs replied at 2018-11-6 04:20
Hello,
Here are the picture I' finally took: https://drive.google.com/drive/folders/1IJgUFAzSsgiO_ ...

"it reads -104V from its generator, and -4.24V when I probed the ground."
The voltage is the measurement maximum voltage of the scope?

ghs

It's the average, as you can see on gen_ch2.jpg and zero_ch2.jpg.