Author Topic: EEVblog #512 - Rigol DP832 Bad Design Investigation  (Read 256640 times)

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Offline Sparky

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #350 on: September 06, 2013, 08:10:47 am »
Is the only difference between the DP832 and the DP832A simply that the A has all the features enabled and that it has a multi colour display, instead of mono coloured display (despite, I suspect, being the same TFT).

Quick answer: YES.  Suggest you read through this thread for many similar questions.
 

Offline hikariuk

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #351 on: September 06, 2013, 10:10:13 am »
Quick answer: YES.  Suggest you read through this thread for many similar questions.

Ta.
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Offline TooOldForThis

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #352 on: September 06, 2013, 10:45:05 pm »
I heard from Tequipment that Rigol has asked them to return all their stock for rework.  There was mention that units already sold would be recalled too.  Tequipment had additional DP832s arriving from Rigol in 3 weeks but Rigol couldn't say if those units would need to be returned for rework too.  I'm not sure if that means Rigol isn't sure if the units mid-shipment had the new or old style heat sinks or if that meant that Rigol hadn't determined if even the units with the new heat sink and layout needed to be recalled.
« Last Edit: September 07, 2013, 03:58:58 am by TooOldForThis »
 

Offline etc6849

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #353 on: September 07, 2013, 03:02:56 am »
Is Tequipment going to contact the purchasers?  Sucks as mine just got here yesterday :(

I measured through the case with a k-type thermocouple after leaving it on a few hours.  No reset, but the temperature was 200*F+ (93* C) on the backside of the lm317's heat sink.  Pretty disappointing.  I hope I don't have to pay for return shipping...  It's good Rigol is making things right though.
« Last Edit: September 07, 2013, 03:05:51 am by etc6849 »
 

Offline EEVblog

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #354 on: September 07, 2013, 04:28:16 am »
I purchased the "A" model of this supply about a month ago. I can verify that I have the model with the revised board. I'm in Cincinnati Ohio, USA.

Wow, that's a wile ago.
How did I (and others) get a fresh shipment with the old design?
 

Online SeanB

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #355 on: September 07, 2013, 05:52:47 am »
Assorted versions of the boards at the assembly plants will do that. If one was a little behind in the production schedule, but still in the delivery spec, and with a large consignment of boards to assemble, that would account for the differing spec levels of the boards.
 

Offline mcinque

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #356 on: September 07, 2013, 02:41:02 pm »
Rigol Europe are not even responding. I'll wait until Monday but it looks like I'll have to force Zeitech to deal with it.
I confirm that they (both Beijing and Europe) are not responding, even if I'm only asking firmware updates.
I'm basically still a rookie and because of this, even with the best intentions, I often say bullshits
 

Offline Hydrawerk

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #357 on: September 07, 2013, 03:37:25 pm »
What to do. Rigol intruduces a new product. Then you must wait one year. Now it's time to buy, when the HW and SW bugs are not appearing...  :--
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Offline marmad

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #358 on: September 07, 2013, 03:50:00 pm »
Rigol Europe are not even responding. I'll wait until Monday but it looks like I'll have to force Zeitech to deal with it.

I'm curious as to why you bought it via Zeitech instead of Batronix? Looking through the two websites, it seems that all of the advantages are for Batronix (30 day return policy, free shipping over €400, no surcharge for different payment methods, etc). Also, when I bought Rigol goods via Batronix in the past - and had issues with it - Batronix got on it immediately and communicated with Rigol.
 

Offline marmad

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #359 on: September 07, 2013, 03:55:01 pm »
What to do. Rigol intruduces a new product. Then you must wait one year. Now it's time to buy, when the HW and SW bugs are not appearing...  :--

Man, you overreact quite often. There was a design mistake - Rigol has acknowledged it and is dealing with it. It's not like Agilent has never had to recall or fix a problem in one of their instruments, is it?

My DS2000 has worked perfectly from the moment I got it. Yes, there were some FW issues I wanted fixed/changed - but nothing that got in the way of me using it for my work.
« Last Edit: September 07, 2013, 04:14:02 pm by marmad »
 

Offline gmit77

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #360 on: September 07, 2013, 06:50:34 pm »
from next monday RIGOL Europe is able to reply and support.
please contact your reference RIGOL distributor to know what to do.
thanks
Batter Fly
never stop innovating
 

Offline Hydrawerk

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #361 on: September 08, 2013, 01:29:22 pm »
It's not like Agilent has never had to recall or fix a problem in one of their instruments, is it?
I don't know.
------------------------------------
Well, the DS2000 is quite good scope when compared to GW Instek GDS-2000A or that weird Owon TDS series. Especially when it comes to intensity grading.
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Offline marmad

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #362 on: September 08, 2013, 01:32:08 pm »
It's not like Agilent has never had to recall or fix a problem in one of their instruments, is it?
I don't know.

Well, they have.
 

Offline marmad

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #363 on: September 08, 2013, 01:59:09 pm »
Because it was much, much cheaper. The whole point of the EEC is that you can buy from anywhere and have full consumer rights. I'm sure Zeitech will deal with it.

Cheaper? You mean they gave you a discount over the listed price (which is exactly the same as Batronix's)?
 

Offline Hydrawerk

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #364 on: September 08, 2013, 02:06:08 pm »
It's not like Agilent has never had to recall or fix a problem in one of their instruments, is it?
I don't know.

Well, they have.
OK, it is possible. What was the problem?
BTW in every firmware update of my scope Agilent fixes some minor bugs, they are there! But i never noticed any...
« Last Edit: September 09, 2013, 06:46:45 pm by Hydrawerk »
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Offline marmad

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #365 on: September 09, 2013, 12:43:46 pm »
They were cheaper when I purchased, but apparently have reduced their prices since. In any case, they are based in Germany too so I don't see how it would make any difference.

I noted the differences in my previous post - which clearly show that, given equivalent prices, Batronix is a more consumer-friendly online site to buy via. But if you got a 'much, much cheaper' price from Zeitech, then it's understandable.
 

Offline mcinque

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #366 on: September 09, 2013, 05:51:59 pm »
Thank you for the update mojo-chan,

it will take 1 or 2 weeks to get the board replaced

do you think they are referring TO the time that we should wait after sending the PSU to the service?

or maybe it's the time we all should wait to see the official recall announcement?
I'm basically still a rookie and because of this, even with the best intentions, I often say bullshits
 

Offline etc6849

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #367 on: September 09, 2013, 10:17:43 pm »
Any hints on how to uninstall the hacked DP832 options?

I tried using the following from Ultra Sigma under Windows 7 64-bit:

:SYSTem:OPTion:INSTall XXXXXXXXXXXXXXXXXXXXXXXXXXX
:SYSTem:OPTion:UNINSTall

where XXXXXXXXXXXXXXXXXXXXXXXXXXX is the license code without the dashes.

Also tried it without the first colon.  Nothing seemed to work...

The programming guide for the DP800 doesn't seem to list any commands for options (unlike the guide for the DS2000 series).  Maybe I'm SOL on clearing the options before sending the unit it?  Are the codes really unique to where Rigol will not know I hacked the power supply?
« Last Edit: September 09, 2013, 11:26:09 pm by etc6849 »
 

Offline mickpah

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #368 on: September 10, 2013, 09:10:12 am »
Any hints on how to uninstall the hacked DP832 options?

I tried using the following from Ultra Sigma under Windows 7 64-bit:

:SYSTem:OPTion:INSTall XXXXXXXXXXXXXXXXXXXXXXXXXXX
:SYSTem:OPTion:UNINSTall

where XXXXXXXXXXXXXXXXXXXXXXXXXXX is the license code without the dashes.

Also tried it without the first colon.  Nothing seemed to work...

The programming guide for the DP800 doesn't seem to list any commands for options (unlike the guide for the DS2000 series).  Maybe I'm SOL on clearing the options before sending the unit it?  Are the codes really unique to where Rigol will not know I hacked the power supply?

I don't think :SYSTem:OPTion:INSTall is a supported command - have a look here  to check http://www.rigol.com/prodserv/DP832/document/?act=view&itemid=599
You need to enter it via the front panel
 

Offline Marc M.

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #369 on: September 10, 2013, 11:07:20 am »
According to TEquipment's website they have over 30 DP832's in stock so I requested a quote from them.  Here's part of the cover letter for the quote:
"....At this point we are waiting for a new shipment of DP832. The models we have in stock are going to be sent back to Rigol, as part of the recall, due to the heatsink issue.  The new shipment is going to be at least 3 weeks out.  Any orders placed now will be for the new ones. We are taking advance orders at this point. Credit Cards will not be charged...."


This was contained on the quote itself:
".....Thank you for your latest inquiry.
Please note that we are waiting for a new shipment of the DP832 to arrive from the factory. The models we
received are from the same batch written up on EEVBlog as being problematic.
As of now, lead time is a minimum of 3 weeks. Quite possibly longer.
We are currently taking pre-orders for a new batch...."

It appears that Rigol had intentions of selling off their remaining inventory of "heat challenged" supplies while quietly introducing the newest rev. of the board...  at least until that Crazy Aussie Bloke screwed everything up by publicly disclosing the issue on international video.  Due to the timing, I believe Dave's video and the backlash caused by it prompted Rigol to issue the recall 8).  It will be interesting to see Rigol's response to the hacked supplies if a method of uninstalling the keys isn't found.
Don't replace the cap, just empty the filter!
 

Offline etc6849

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #370 on: September 10, 2013, 02:08:47 pm »
I want to uninstall the options, not install them...  I don't think you can uninstall them from the front panel?

I don't think :SYSTem:OPTion:INSTall is a supported command - have a look here  to check http://www.rigol.com/prodserv/DP832/document/?act=view&itemid=599
You need to enter it via the front panel
 

Offline salviador

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #371 on: September 11, 2013, 10:56:34 am »
Hi,
I have crack rigol 832 with r-78b5.0-1.5
work very well!!!!!!!!  , does not heat!!
Send the screen


 

Online mariush

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #372 on: September 11, 2013, 11:26:27 am »
That looks like a dc-dc converter , not a linear regulator.  Looks soldered properly albeit not so nice visually. 

Would it be possible to write down what says on that?
 

Offline neslekkim

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #373 on: September 11, 2013, 11:39:35 am »
 

Offline salviador

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Re: EEVblog #512 - Rigol DP832 Bad Design Investigation
« Reply #374 on: September 11, 2013, 11:45:57 am »
That looks like a dc-dc converter , not a linear regulator.  Looks soldered properly albeit not so nice visually. 

Would it be possible to write down what says on that?

Yes, is RECOM switching regulator 1.5Amp 5V out
work very well.
The resolution is bad of pic but work very well
 


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