DSO5072P startup then freeze - help please

[Greg_L]

Hello, first post. I need some help, please.

As the title says, I have a Hantek DSO5072P. It's about two years old.

My issue - the unit starts up and then immediately freezes on some type of menu screen.

Here is a pic:


This is as far as it goes. It worked a week ago. None of the buttons or knobs do anything. It's frozen on what appears to be some kind of menu for horizontal view options? A few of the panel buttons are lit and stay on. I can't get it past this screen. If I cycle the start button quickly I can get it to reboot options, but none of the buttons work. F1, F2, F3...nothing.

Also, during the million times I've turned it on and off, sometimes a red error message pops up "FGPA does not match the app"...or something along those lines.

Please help me out here. How can I un-stick this thing?

[tv84]

Open it and try to see if there is any UART port that lets you see a boot log.

I would say something got corrupted...

[Greg_L]

Open it and try to see if there is any UART port that lets you see a boot log.

I would say something got corrupted...

Thank you for the quick reply!

I'm sorry, I am a complete noob and I don't know anything about UART ports or boot logs. How do I connect to this port and what would I do with a boot log?


But just as I sit here typing, there has been a new development. As the scope sits here next to me powered on and in it's frozen state, it's making this very fast clicking sound....like an electric rattlesnake. LOL. So weird.

[Greg_L]

Okay then, no more replies.

I guess I'll just buy another one. 


Any advice on a good beginner's scope that won't crap out in a couple years?

[tunk]

Maybe you could contact Hantek, describe the
problem and maybe they can suggest a solution.
http://hantek.com.cn/support

[Greg_L]

Maybe you could contact Hantek, describe the
problem and maybe they can suggest a solution.
http://hantek.com.cn/support

Yeah, two emails, no reply. 

[tunk]

I guess you already have looked at the forum:
https://www.eediscuss.com/forum.php?mod=forumdisplay&fid=44
Could you open it and post a photo of the circuit board?
Maybe someone could find the UART port?

And if you don't fix it, maybe you could put it up
for sale here; I'm pretty sure someone would like
to have a go.

[Greg_L]

I guess you already have looked at the forum:
https://www.eediscuss.com/forum.php?mod=forumdisplay&fid=44
Could you open it and post a photo of the circuit board?
Maybe someone could find the UART port?

And if you don't fix it, maybe you could put it up
for sale here; I'm pretty sure someone would like
to have a go.

No I had not seen that forum. Will try, thanks.

Sell it here? I don't feel good about selling something broken, even if I'm sure one of you tech wizards could fix it blindfolded. But maybe if I don't get anywhere with it I'll consider it.

[tunk]

This video shows how to connect to the UART:


Edit: and maybe you could check the PSU voltages?