Author Topic: Rigol DS2072 For Parts/Expired - Should I Buy?  (Read 3969 times)

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Offline NizNozTopic starter

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Rigol DS2072 For Parts/Expired - Should I Buy?
« on: April 21, 2021, 08:35:57 pm »
Hi everyone. New user here. I'm not working in the electronic field - I'm actually a neuroscientist but keen to get into electronics for the fun.
I've been looking for a basic scope, initially I was recommended to buy an analogue 100mHz, 2 channel model, but it seems digital scopes are  possibly even a better option now. (The person who advised me hasn't used digital for over 15yrs , so there might have been a few updates). (Please don't ban me if I'm posting anything inappropriate)

Anyways, here's my question:
I came across a Rigol DS2072 being sold "for parts". The seller says it turns on, but 'needs to be serviced'. A screenshot shows that there are several "expired" Trials. I know this particular model has been hacked before, so I wondered if buying this would be a cheap way of getting a sweet scope.
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Thanks for looking! (Please help)
« Last Edit: April 21, 2021, 08:52:19 pm by NizNoz »
 

Offline IAmBack

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #1 on: April 21, 2021, 08:43:56 pm »
Imo bigger concern is not with expired options, but rather lack of any reasonable plot on the screen. Wide green band on the second image suggests something may be wrong.
 
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Offline NizNozTopic starter

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #2 on: April 21, 2021, 08:54:33 pm »
Ok.. Good to know it's not supposed to look like that..  :-[
I take it you should still be able to use the scope for basic functions if every 'option' is expired, right?
 

Online tautech

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #3 on: April 21, 2021, 09:35:48 pm »
2nd and 3rd images show the scope in Stop mode displaying a previously captured waveform at a timebase setting too slow to show any detail.
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Offline NizNozTopic starter

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #4 on: April 21, 2021, 09:49:53 pm »
Does this mean it's not necessarily a sign the scope is broken Tautech?
 

Offline bd139

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #5 on: April 21, 2021, 09:59:48 pm »
It’s in ref mode. Whoever took the photo doesn’t know how to use it.

That doesn’t mean it isn’t masking issues but that’s not an abnormal display for the mode.

Also yeah don’t buy an analogue scope unless you want to fix it :)

Option Keygen search for “riglol” on Google.
« Last Edit: April 21, 2021, 10:01:58 pm by bd139 »
 

Online tautech

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #6 on: April 21, 2021, 10:00:43 pm »
Does this mean it's not necessarily a sign the scope is broken Tautech?
Not IMO.
First image is scope ON but both channels OFF.
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Online egonotto

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #7 on: April 21, 2021, 10:04:44 pm »
Hello,

the pictures say little if the scope is broken. Can you ask the seller to send you other pictures?

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egonotto
 

Offline NizNozTopic starter

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #8 on: April 21, 2021, 10:36:00 pm »
What kind of pics should I request? I have pics of the casing, ports etc and everything 'looks' good.
 

Online TurboTom

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #9 on: April 21, 2021, 11:04:37 pm »
My experience with auctions like this is that the condition of the goods rarely is better than described. You may get lucky with very obscure items but a scope is quite some common instrument, and looking at the seller's other sales, he at least appears to have some technical background. Moreover, this scope is the very old "non-A" version without the 50 Ohms input option. The full-screen signal may well indicate a bad ADC which is rare but not unheard of on these instruments. If you are very experienced with analog/digital gear and used to fine pitch SMD reworking, and only if you can get the scope at the initial price ($100 CDN), I would consider a purchase, otherwise it's very likely wasted money. Just my 2ct...
Cheers,
Thomas
 

Offline NizNozTopic starter

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #10 on: April 21, 2021, 11:06:42 pm »
Thanks Tom. Good points. I appreciate that. As tempting as it seems I think I'd best stay away from this...
 

Online egonotto

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #11 on: April 22, 2021, 03:09:07 am »
Hello,

What kind of pics should I request? I have pics of the casing, ports etc and everything 'looks' good.

picture with both channels on and 1mV/div and picture with both channels on and 1V/div and connected to Probe Compensation Signal Output Terminal.

See the example pictures.

Best regards
egonotto
 
 

Offline james_s

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #12 on: April 22, 2021, 03:17:31 am »
It's impossible to say for sure, but it looks like it's probably working fine.

Keep in mine a DS1054z is only $328 brand new and is hackable to 100MHz. I don't recommend analog scopes anymore unless you happen to find one really cheap, like $50 or less, or if you have a specific application where an analog scope has advantages. There aren't many.
 

Online Fungus

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #13 on: April 22, 2021, 11:40:18 am »
it seems digital scopes are  possibly even a better option now.

Digital 'scopes are definitely a better option now.

I came across a Rigol DS2072 being sold "for parts". The seller says it turns on, but 'needs to be serviced'. A screenshot shows that there are several "expired" Trials.

These scopes come with everything enabled as a time-limited 'trial'. THose trial expire.

I know this particular model has been hacked before, so I wondered if buying this would be a cheap way of getting a sweet scope.

That all depends on a very important, but missing, piece of data: How much is he asking for it??

You can get a brand new 'scope with full warranty for about $300 these days, there's no need to go for an old, possibly broken 'scope just to save a few bucks.

eg. This one: https://www.tequipment.net/Instek/GDS-1054B/Digital-Oscilloscopes/?search=true

(which is hackable to 100Mhz and you get EEVBLOG discount)
 

Offline tunk

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #14 on: April 22, 2021, 11:46:20 am »
 

Online Fungus

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #15 on: April 22, 2021, 01:51:09 pm »
It looks broken to me.
 

Offline goaty

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #16 on: April 22, 2021, 02:19:27 pm »
The ref /ch1 waveform is 10V/div in second pic, so this does not look right. Who records 200Vpp at 500us/div ?
Could be but I´d say it´s fried memory or acquisition chip. It´s a less than 50/50 chance it´s working.
If broken, you need to be exceptionally good to stand any chance of repairing it without or even with schematic.
 

Offline james_s

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #17 on: April 22, 2021, 06:34:33 pm »
The ref /ch1 waveform is 10V/div in second pic, so this does not look right. Who records 200Vpp at 500us/div ?
Could be but I´d say it´s fried memory or acquisition chip. It´s a less than 50/50 chance it´s working.
If broken, you need to be exceptionally good to stand any chance of repairing it without or even with schematic.

Maybe it's set to use a 10x probe and connected directly to a signal generator? That could be 1V/div, easily a case of someone who just doesn't know how to use a scope.
 

Offline RoGeorge

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #18 on: April 22, 2021, 06:50:45 pm »
Quote
Rigol DS2072 For Parts/Expired - Should I Buy?

No, absolutely not.

Unless you really buy it for parts only, as advertised, in order to fix some other instrument, which is not your plan as it seems.

Offline NizNozTopic starter

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #19 on: April 22, 2021, 07:20:46 pm »
Thanks all of you guys. I can’t say how grateful I am to be getting help and advice. This is clearly NOT something I need to be taking a chance on.
 
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Offline Grandchuck

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #20 on: April 22, 2021, 08:42:23 pm »
Good decision!
 

Online Fungus

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #21 on: April 23, 2021, 08:41:58 am »
Maybe it's set to use a 10x probe and connected directly to a signal generator? That could be 1V/div, easily a case of someone who just doesn't know how to use a scope.

It's set to 10V/div in the photo and there's nothing actually connected to it. There's NO WAY the trace can be covering every pixel on the screen.


 

Online bdunham7

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #22 on: April 28, 2021, 05:32:20 pm »
In keeping with the insanity that eBay has become, it ended up selling for $315, plus shipping.   :wtf:

A 3.5 digit 4.5 digit 5 digit 5.5 digit 6.5 digit 7.5 digit DMM is good enough for most people.
 
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Offline tv84

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #23 on: April 28, 2021, 05:37:31 pm »
 :palm:  I guess it was not a EEVBLOG member...
 
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Offline bd139

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Re: Rigol DS2072 For Parts/Expired - Should I Buy?
« Reply #24 on: April 28, 2021, 06:36:13 pm »
Muppets  :palm:
 


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