New Rigol dho804 oscillocope

I use  the power adaptor provided in the accessories box and I connect it to the AC power source (220 V, 50 Hz ).

Yes, I understand the difference here.  My point is that there seems to be a (perhaps older) version requiring a 12V 4a PD3 power supply and a newer version requiring a 15v 3A PD3 power supply.  The OP seems to have the latter supply but possibly a former instrument but it isn’t wholly clear: perhaps there is an unrelated fault (maybe using a 15v supply for a 12v instrument caused a problem), perhaps the PSU is wrong.  Is he reading the wrong version of the manual??  I wouldn’t be plugging any old supply into an instrument that is new and under warranty.

anniel747  I have original  power adapter for Toshiba laptop 15V 5 A , Can I try to connect it to scope.

Well, maybe you should take a multimeter and check the polarity of both power adapters at the output connector.
Of course, the decent instrument should have a polarity protection at the input, but at modern times, nobody can be sure, because the cutting of costs. 

No.  You already have a 15v 3A supply but something isn’t working properly.  You may need a 12v 4a supply but it must be a USB-C PD3 supply as the scope will tell the power supply what it needs.  Don’t just plug any old supply into it: go back to your seller and tell them it doesn’t work

The main question is, what is the power input on his scope. Is it USB-C or a circular bayonet connector ?
Can the OP post a photo of the power input on his scope ?

It’s USB-C

OK, than you need an USB-C power supply.
In this case, I do not understand the photo, which Jan Cumps posted couple of hours ago - https://www.eevblog.com/forum/testgear/rigols-new-dho800-oscilloscope-unbox-teardown/msg4965181/#msg4965181

where at the adapter is clearly indicated as a the circular bayonet connector with + inside and - outside.

But, I am almost sure, that the power source is not a problem. If the scope is able to display a Rigol logo for five minutes and do a restart after that a go to loop, it really looks like a firmware problem.

PavelKCZ  Can I do something to reset firmware before start up operation? To make sure it's not a charger problem.

Yeh, that’s confusing: the referenced PSU has a circular connector according to the datasheet, but the text with that message implies it has USB-C and same poster’s picture of the back of his scope shows a USB-C socket.

Yeh, that’s confusing: the referenced PSU has a circular connector according to the datasheet, but the text with that message implies it has USB-C and same poster’s picture of the back of his scope shows a USB-C socket.

I ask for why this pin is exist although that the USb type C is the same for two directions

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 Hi  ahmedfotoh  you need a 15V 3A DC power supply with THIS USB C connector.

Please look on the back side on your scope:

So, if you have another device this is wrong. May be that Rigol provide a universal power supply.
But the cord with such USB connector AND with this coding pin must be mounted into the power supply.
In the manual is a caution (page 13) that you do not use the PS for other devices.

Here the official website:

https://www.rigolna.com/products/rigol-digital-oscilloscopes/dho800/

Please read careful the manual.

Well USC C has power wires that are "normally" mounted mirrored on the plug, but not a universal power supply.

So, you can rotate ("normally single voltage"), but not this for the Rigol. 

Regards

Gerald

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 geralds  Ok , Thank you very much for this clarification, I understand that the my adapter i not the proper one and I need another one has 15V 3 A but it has the same terminal of Rigol no the universal Type C one?

How can I update its firmware without turn on the device ?

It is possible that the DHO8xx is different from the DHO9xx - but as you can see from the picture above my DHO924S is being powered and working with its own PSU plugged into the FNB58 USB meter and a standard (but good quality) USB C cable connecting the FNB58 to the Rigol scope.

MK

Hi  michaelkellett 

TOP!!! Yes, your tip is right.

Both scopes use the same PSU, USB C / 15V 3A.  

for ahmedfotoh: Which power supply do you have, recommending, and where can he buy it?

...the USB meter FNB58 looks good.

...what are your experiences with your DHO924s?

Regards

Gerald

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I'll try to get round to a mini road test of the DHO924 in a couple of weeks.

MK