New Rigol DG1022U is not working - Page 1
Forum section: electronics / testgear

author: epna0xD
author_rank: Newbie
timestamp: December 10, 2013, 07:37:10 pm
content: Hello! First of all, my english is not very good so please bear with meI've just got my Rigol DG1022U that I ordered from Ebay a few weeks ago, and.. well.. it does not work!I don't know if I'm stupid or just missing something totally obvious about this.The unit _seems_ to work just fine, I can navigate through all the menus and do all thesettings, I have also tried the Ultra Sigma software which works just fine and it cancommunicate with the DG1022U without any problems... but! The problem is; THERE IS NO WAVEFORM OUTPUTAnd yes, I have pressed the button that activates CH1/CH2, I have also tried different BNC-cables and I havemeasured the output directly with the oscilloscope (DS1052E) probe, no signal at all, not even a small glitch thatmaybe, somehow COULD be any form of output from this d**n unit!Any ideas?Thank you very much in advance!epna0xD(Sweden)Electronics Student

author: Hydrawerk
author_rank: Super Contributor
timestamp: December 10, 2013, 08:32:35 pm
content: Return it to the supplier.

author: Owen
author_rank: Contributor
timestamp: December 10, 2013, 08:37:49 pm
content: Quote from: epna0xD on December 10, 2013, 07:37:10 pmIf you've checked your trigger point and it should trigger with your scope and wavegen setting... than +1 for Hydrawerk and return it to your supplier...

author: epna0xD
author_rank: Newbie
timestamp: December 11, 2013, 06:25:18 pm
content: Okay, thank you. I have sent an email to the seller and got a response back that they wantproof of it not working, so I'll send them a video showing it connected to my scope..

author: Bored@Work
author_rank: Super Contributor
timestamp: December 11, 2013, 06:51:51 pm
content: Quote from: epna0xD on December 11, 2013, 06:25:18 pmOn Star Trek this would be the moment the captain orders a Red Alert.

author: electronics man
author_rank: Frequent Contributor
timestamp: December 11, 2013, 09:49:40 pm
content: Dave, when would you be able to get one properly and take it apart for all us keen veiwers

author: mcinque
author_rank: Unknown
timestamp: December 11, 2013, 10:30:01 pm
content: try the self test: UTILITY > TEST/CALwhat is the result?

author: Tasman
author_rank: Contributor
timestamp: December 12, 2013, 10:10:48 am
content: Quote from: epna0xD on December 10, 2013, 07:37:10 pmWatch out the supplier does not string you along until the PayPal dispute filing period expires. I usually find that opening a dispute fairly early in the piece gets their attention (because payment is suspended) and ensures getting the maximum protection.

author: epna0xD
author_rank: Newbie
timestamp: December 15, 2013, 04:03:46 pm
content: TheSolderShack: Yes, I did.mcinque: The result is "Self-test passed". But I have recently discovered that when CH1 is activated and the self-test is performed, a error-message is popping up saying"OverLoad protect, output is off!", and then directly after showing "Self-test passed" again. Is this normal?Tasman: Yeah, I am starting to suspect something like that.. But so far the seller seems very helpful, but maybe I should open a "case" A.S.A.P.

author: mcinque
author_rank: Unknown
timestamp: December 15, 2013, 04:33:44 pm
content: Quote from: epna0xD on December 15, 2013, 04:03:46 pmThat message indicates that one output is shorted.If the self test is ok, maybe is something between the board and one output: most probably the self test disconnects the main board from the outputs to do the tests, and doing so doesn't sense the short.If you set the maximum amplitude and enable the output, the message "overload protect" doesn't appear even after 40 seconds?

author: epna0xD
author_rank: Newbie
timestamp: December 15, 2013, 05:10:34 pm
content: Hm okay. The weird thing is that neither CH1 nor CH2 output any waveform, but the "overload" message only appears when CH1 is activated during the self-test. If I perform the self-test with CH1 and CH2 activated, the "overload" error pops up and CH1 deactivates, CH2 is still activated. If only CH2 is activated during the self-test, no overload message appears at all.I tested to set CH1 amplitude to 20 Vpp, sinewave, 50 Hz and left it there for a few minutes.. After about 5 minutes and 30 secondsthe overload message pops up and the channel is deactivated.

author: mcinque
author_rank: Unknown
timestamp: December 15, 2013, 10:15:01 pm
content: So there is a short on the output that doesn't let out any waveform. This should be enough to declare it a DOA and get a return.

author: epna0xD
author_rank: Newbie
timestamp: December 16, 2013, 02:46:45 pm
content: The seller contacted me today saying that I should return the item for repair and they will pay the shipment costs. I wrote back and told them that I will return the item but I don't want a new/repaired unit back because in that case I need to pay the import tax of about $60 again. Is it okay to just return the item, get the refund and then forget about it or am I bound to get a replacement unit?Edit: The seller has also shown my "proof" video to an engineer at the Rigol factory, and they had no idea what the problem could be, hmm.

author: epna0xD
author_rank: Newbie
timestamp: December 16, 2013, 09:04:34 pm
content: I can't believe this! This is totally insane! I am happy, angry, frustrated and embarrassed at the same time!I couldn't resist taking the unit apart, I know the warranty will be void by doing so, but I am glad I did.I found a 6-pin connector inside that was barely touching the damn connector on the PCB! I pressed it downand turned the power on and... voila! I can hear some lovely relay clicks inside.. I didn't even know it was supposedto sound like that! The unit now works like a charm! Unbelievable!

author: Hydrawerk
author_rank: Super Contributor
timestamp: December 18, 2013, 11:36:16 am
content: I am happy that it was easy to repair this instrument.