Buttons on SDS1202X-E stopped working - Page 1
Forum section: electronics / testgear

author: AndrewLoomis
author_rank: Contributor
timestamp: May 27, 2018, 04:58:51 pm
content: In the middle of using my Siglent SDS1202X-E oscilloscope, the buttons on the front panel just stopped working. I have previously set up the LAN control with EasyScopeX, and I can still control the scope via LAN, so it seems like its still working, I just can't get the physical buttons on the front panel to do anything, not even a beep. Did I activate some lock-out feature, or is the front panel most likely broken?

author: tautech
author_rank: Super Contributor
timestamp: May 27, 2018, 09:04:38 pm
content: Quote from: AndrewLoomis on May 27, 2018, 04:58:51 pmHmmm.Probably the ribbon cable connection between the mainboard and the front panel PCB but it could be at either end.IIRC some 1054Z owner had a similar problem recently, however if you have a Siglent service center close it should really go back for warranty repair. Try and make sure you get informed of the actual fault and if you can report back here so that other owners can maybe find this thread in the future when their 1202X-E's are past warranty.I'll point US tech support to this thread.

author: AndrewLoomis
author_rank: Contributor
timestamp: May 28, 2018, 01:16:44 pm
content: Thanks for the reply tautech, I've contacted Siglent on their website and waiting for their reply. I'll definitely post what was wrong after its fixed.

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 07:57:40 am
content: Hi..I have the same.And this happens spontaneously.Europe was applying for siglent EU, they were redirected to the Russian company Prist.Prist replied that if they did not buy from them, then we will not help.That is, there was no help from the siglent.The oscilloscope was bought on aliexpress, but now everything is gone.I disassembled the oscilloscope, on the USB chip board, U33 U46 U78, and the U126 memory,on the right, were flooded with a large layer of flux. Washed the flux, but it did not help.Put the fan-turbine on the blowing of the processor, heated to 60 degrees, also did not help.When the oscilloscope stops responding to the buttons, the signal is displayed.There are cases that it hangs completely, and strange points may appear on the display.checked on the firmware both 5.1.3.17R1 and 5.1.3.13Now I sit I think, what else to do.mb/sn BA

author: tautech
author_rank: Super Contributor
timestamp: May 29, 2018, 08:35:25 am
content: Quote from: dmgr on May 29, 2018, 07:57:40 amWelcome to the forum.Have you completely disassembled the scope and checked the ribbon cable to the keypad PCB is correctly seated at each end ? It carries both power for the front panel PCB and the data between both too.

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 08:43:31 am
content: Yes, checked, many times. And it's not about the cable.And if you turn on FFT, then the oscilloscope is guaranteed to freeze.Only once I was lucky, the oscilloscope worked with FFT for a long time, but after turning on the shutdown the hangup continued.When the oscilloscope stops reacting to the buttons, the HL2 LED stops flashing

author: tautech
author_rank: Super Contributor
timestamp: May 29, 2018, 09:02:07 am
content: Quote from: dmgr on May 29, 2018, 08:43:31 amThanks.I'll seek advice from tech support.One more question, did you try a hard power OFF, that is switch OFF at the wall not the Power button ?

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 09:08:39 am
content: Quote from: tautech on May 29, 2018, 09:02:07 amPressing the shutdown button did not respond to the oscilloscope. I switched off the oscilloscope only by turning off the power from the socket (220V).It was connected to the COM (RS232) port on the board, and nothing was displayed at the moment of hang-up or disabling of the buttons in the console.

author: tautech
author_rank: Super Contributor
timestamp: May 29, 2018, 09:12:19 am
content: Quote from: dmgr on May 29, 2018, 09:08:39 amYes, of course, thanks.We'll wait for advice from Siglent now.

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 09:33:00 am
content: ok. Thank you

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 10:12:21 am
content: that's the way the video is when the buttons are turned off.watch from 2,40 minuteshttps://drive.google.com/open?id=13idpUFzdaNxucB7_hok6jJOI7szyeRFI

author: iMo
author_rank: Super Contributor
timestamp: May 29, 2018, 10:56:03 am
content: Does it freeze always upon the same action (ie. the selecting the math function in your video)? It seems to be rather a sw issue..

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 11:20:23 am
content: In mathematics as a rule, always.And so you can turn on, do not press anything, and after a while the buttons will not work.

author: nctnico
author_rank: Super Contributor
timestamp: May 29, 2018, 11:41:10 am
content: Based on the flux it seems they did some rework on it. By doing that they probably damaged some solder joints on the BGA chips. When the scope gets warm everything expands and the solder joint no longer makes contact and it crashes. There is nothing much you can do about this. Maybe try to reflow the entire main board again but no guarantees this will improve things. I'd try to return it to Aliexpress ASAP (open a case).

author: pascal_sweden
author_rank: Super Contributor
timestamp: May 29, 2018, 11:47:13 am
content: Did OP buy it as a new scope or as a second hand?

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 11:50:45 am
content: hangs and on the cold, and can hang right after switching on, if you start to twist buttons

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 12:05:31 pm
content: New.Bought in october 2017 in ali "Keysight Oscilloscope Store"With the seller did not correspond, and late already.And after the response of the Russian seller, upset and dismantled the oscilloscope.

author: tautech
author_rank: Super Contributor
timestamp: May 29, 2018, 04:43:13 pm
content: Quote from: dmgr on May 29, 2018, 11:50:45 amFrom Siglent tech support:I had saw his video . It seems a bug. We are trying to reappear it. Do you have the customer's email address or let him feedback to this email( support@siglent.com). We will find out this problem and solve it.Please send them an email.They will want SN# and any further infoifyou can get it from the System info menu page.

author: Old Printer
author_rank: Frequent Contributor
timestamp: May 29, 2018, 04:56:02 pm
content: DMGR, Why did you buy a new scope from someone on AliExpress rather than a well known dealer with some history? I would think buying a new Siglent scope from a dealer who calls himself Keysight would be a red flag right away.

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 05:37:18 pm
content: Quote from: Old Printer on May 29, 2018, 04:56:02 pmI can not know all the details, but sds1202x-e already sold half a year on aliexpress. And I bought a week when they all disappeared there, I would even say that all the siglent oscilloscopes on aliexpress have disappeared.analog sds1202x-e (akip-4131/2) is sold in Russia for $ 660 against $ 380 at that time on ali

author: dmgr
author_rank: Contributor
timestamp: May 29, 2018, 05:38:22 pm
content: Quote from: tautech on May 29, 2018, 04:43:13 pmок, already sent

author: Old Printer
author_rank: Frequent Contributor
timestamp: May 29, 2018, 06:11:31 pm
content: Quote from: dmgr on May 29, 2018, 05:37:18 pmThat's a big temptation, I get it. I hope Siglent does right by you, seems like they are listening now anyway.

author: dmgr
author_rank: Contributor
timestamp: May 30, 2018, 08:51:11 pm
content: the received answer from support"We have tested this issue you posted on the eevblog but it has not yet be reproduced. Please wait and we will send you an email if the issue has been reproduced."for interest is another videohttps://drive.google.com/file/d/1FSRfg3KNEUz3tIeKXKJZlq3qc7zrCaOW/view?usp=sharingat 3:40 min the oscilloscope freezes, but continues to show a signal....waiting for an answer...

author: tautech
author_rank: Super Contributor
timestamp: May 30, 2018, 09:15:50 pm
content: Thanks for the vid.Sonota HW problem it would seem.

author: dmgr
author_rank: Contributor
timestamp: May 30, 2018, 09:56:30 pm
content: just in case the photos of the oscilloscope and the board, both before the washing out of the flux, and afterhttps://drive.google.com/drive/folders/17WXhoVSJry5Ruy8DDDsWxF3omuhvRl2N?usp=sharing

author: iMo
author_rank: Super Contributor
timestamp: May 30, 2018, 09:57:51 pm
content: Quote from: dmgr on May 30, 2018, 08:51:11 pmIf they were able to reproduce the issue all 1202x-e units world wide would be affected..Did you try to refresh the firmware after the cleaning up the scope?

author: dmgr
author_rank: Contributor
timestamp: May 30, 2018, 09:59:16 pm
content: Quote from: imo on May 30, 2018, 09:57:51 pm

author: AndrewLoomis
author_rank: Contributor
timestamp: June 11, 2018, 01:14:54 pm
content: So I got a response back from Siglent about what was wrong with the 1202X-E I sent in for repair, and this is what they said:"It looks to me like the keypad is bad. I swapped the mainboard and it did not repair it and I did not have any kepads so I gave you another unit from our demo pool."...so it sounds like they really don't know what the problem was either.

author: tautech
author_rank: Super Contributor
timestamp: June 12, 2018, 07:55:43 am
content: Quote from: AndrewLoomis on June 11, 2018, 01:14:54 pmI would have thought it was pretty simple and self evident:Front panel PCB.I wonder if they even removed and visually inspected it ?Could it have been physically damaged from an impact to the encoders......I guess we'll never know.This is where the service manual comes up a bit short......there's no mention of the front panel PCB or any tests/checks to do on it.https://www.siglentamerica.com/wp-content/uploads/dlm_uploads/2018/05/SDS1000X-E_ServiceManual_SM0101E-E01A.pdfThere's checks for the PSU, LCD and mainboard but no mention of the front panel PCB....like it doesn't exist.Siglent needs remedy this !As far as swapping out the mainboard......why ? There's a range of checks to do in-situ without the need to swap it out.

author: dmgr
author_rank: Contributor
timestamp: July 28, 2018, 08:22:47 pm
content: HiIt seems that there was no solution with the buttons.In the reviews of one of the online stores in Ukraine, I found another person who lost buttons.So the problem takes place and maybe it's the firmware.https://electronoff.ua/good/ostsillograf-siglent-sds1202x-e-200-mgts.phptranslate:Alexander 16/02/2018 18:21Acquired this unit SIGLENT SDS 1202X-E deficiencies is not detected except: the control buttons hang, you have to shut down forcedly from the network(electrical) to reboot.

author: SteveOregon
author_rank: Contributor
timestamp: July 29, 2018, 09:14:37 pm
content: QuoteThere's a lot said in that statement.I troubleshot hundreds of keyboard issues over multiple products (two different companies) over my 37-year career as an electronics tech, and keyboard issues were ALWAYS relatively easy to isolate to the component level. Keyboard lines are usually held high, until a key-press pulls it low. It's not rocket science.Unfortunately, more and more, companies will train someone to swap major parts of a device, and NOT have a technician troubleshoot to component level (cost savings). If this is a one-of-a-kind failure, root cause may not be important. But we hope Siglent would do root cause analysis on failurestrends.It also appears the troubleshooting didn't take place at the manufacturing plant, or the parts would have been available.

author: dmgr
author_rank: Contributor
timestamp: August 05, 2018, 05:00:35 pm
content: Today I conducted another test.FFT started the calculation from the built-in generator,waited for the freezing of the readings of the FFT,removed the probe from the generator, the signal disappeared.FFT the picture has hung up.I connected the dipstick to the generator, the signal appeared, the FFT also hangs.But the buttons do not work either !!!.That is, this is the case either in the firmware or in the main board.

author: LaserTazerPhaser
author_rank: Regular Contributor
timestamp: August 06, 2018, 07:21:36 am
content: Bought mine from the actual siglent store and no issues.

author: dmgr
author_rank: Contributor
timestamp: August 06, 2018, 07:54:46 am
content: if I lived in the USA ... When I bought the oscilloscope, we did not have them in Russia, from the word absolutely. Then they began to sell, but twice as expensive. Our customs can not miss them, because according to our law, only firms can buy them abroad.Therefore, especially the choice to buy for 350 dollars an oscilloscope with such parameters was not.

author: pascal_sweden
author_rank: Super Contributor
timestamp: August 06, 2018, 10:31:36 am
content: Demopool? So you traded a new unit for a used unit? Is that standard Siglent practice? I would not accept this approach myself personally!Quote from: AndrewLoomis on June 11, 2018, 01:14:54 pm

author: dmgr
author_rank: Contributor
timestamp: September 17, 2019, 01:46:42 am
content: Hey.I fixed the problem with turning off the buttons and freezing the oscilloscope. Had to replace the DDR3 memory chip U65

author: tautech
author_rank: Super Contributor
timestamp: September 17, 2019, 01:52:31 am
content: Quote from: dmgr on September 17, 2019, 01:46:42 amGreat, good job.Would you mind posting the pt# of the chip so to help others that might have problems in the future ?

author: dmgr
author_rank: Contributor
timestamp: September 17, 2019, 02:00:11 am
content: in my case, the chip U65DDR3 Micron D9MNJ

author: HallmanLabs
author_rank: Newbie
timestamp: October 29, 2019, 05:59:12 am
content: I thought I was having this issue with my scope and wrote out a long reply. However, I fixed it before I hit post, haha.The issue I was having was I plugged in my CAT6 to capture screens of the scope, but I didn't update the IP address of the scope to match the app (moved recently). When I opened up the FFT with a pure sine wave coming in, it would freeze every time after about 2 minutes. Then I realized the IP error and I went in there first (turning off FFT after restart) and after I corrected that, I no longer have the button freeze issue.This is still an issue that Siglent should address though. It was doing this before I ever opened up the application in Windows and even if someone has the IP wrong, it shouldn't freeze up the entire button assembly, forcing you to pull the plug.It has to do with FFT + external I/O that is causing this to happen. Hopefully they figure it out soon.

author: tautech
author_rank: Super Contributor
timestamp: October 29, 2019, 06:38:59 am
content: Quote from: HallmanLabs on October 29, 2019, 05:59:12 amThanks for your feedback.Can you please state which firmware version you have installed ?

author: Kit
author_rank: Newbie
timestamp: April 26, 2024, 04:47:51 pm
content: The same thing happened to me, the keypad stopped working just 2 months after purchasing it. :'(