Electronic Engineer Discuss

Title: Hantek DSO-4102C fix or send back [Print this page]

Author: jstbrowsin Time: 2018-12-1 04:37
Title: Hantek DSO-4102C fix or send back
Is it possible to fix the input board on these scopes? I have one of these with what I suspect has blown inputs possibly from over voltage from previous user. Self calibration freezes at step 12 [error 0x100] Using square wave calibration produces no wave even when pressing auto set! Am I missing something here or have I bought a non working scope? Thanks in advance for any help you may send my way.

Author: jstbrowsin Time: 2018-12-2 12:57
Edited by jstbrowsin at 2018-12-3 08:51

Can anybody help me please? 13 views and no answers?? I not being nasty and please don’t mistake my passion for pressure. . its just that if the DSO is not fixable then I need to get this back to the seller ASAP to refund my money and get me something else. I have been servicing and repairing musical instruments (amplifiers, mixers, P.A systems, keyboards etc) for well over 15 yrs now so I know my way around PCB’s and SMD devices if I need to fix it. I for got to add that I also upgraded to the latest firmware.

Again thanks in advance for any help you can throw my way.

Author: amy Time: 2018-12-7 14:10

jstbrowsin replied at 2018-12-2 12:57
Can anybody help me please? 13 views and no answers?? I not being nasty and please don’t mistake my ...

Sir, I don't quite understand the phenomenon of your problem, please give us a video to study.

Author: jstbrowsin Time: 2018-12-8 09:52

amy replied at 2018-12-7 14:10
Sir, I don't quite understand the phenomenon of your problem, please give us a video to study.

I got it going but now self calibration error is 0x702 (30mins after start up) can you help me please?

Author: amy Time: 2018-12-8 14:13
Sir, please press "Utility->system information" and give me a picture to study.

Author: jstbrowsin Time: 2018-12-8 17:35
Edited by jstbrowsin at 2018-12-8 19:21

amy replied at 2018-12-8 14:13
Sir, please press "Utility->system information" and give me a picture to study.

thanks amy

Author: amy Time: 2018-12-10 09:11

jstbrowsin replied at 2018-12-8 17:35
thanks amy

Sir, please dismantle the scope and measure the voltages as the picture to check the power supply.
[attach]2414[/attach]
And give me the measurement results to study.

Author: jstbrowsin Time: 2018-12-10 18:48
The -7v rail is at -8.4v. All the rest of the rail voltages are correct.

Author: jstbrowsin Time: 2018-12-12 05:46
Bump! Does anyone here have any idea how to fix this please?

Author: amy Time: 2018-12-12 16:58
Sir, the power board looks good.
Please contact your seller to return the main board to factory for repair.

Author: jstbrowsin Time: 2018-12-12 18:10
Can you tell me what the fault is with the main board please Amy? I may be able to fix it myself.

Author: jstbrowsin Time: 2018-12-13 17:11
Bump! Anyone please?

Author: jstbrowsin Time: 2018-12-17 04:19
What a complete waste of my time. Can someone here give me a better answer please? Like maybe a list of causes for the errors the scope has been outputting would be far better than "return for fixing". Anyone???

Author: amy Time: 2018-12-19 14:37
Sir, sorry, we suspect it's a motherboard failure. But we can't pinpoint where is fault.
Please send it back to the factory for inspection.

Author: jstbrowsin Time: 2018-12-19 21:20
Thanks for your time and patience but sending it back to the factory is not an option as I live in New Zealand. Shipping costs alone (not to mention the cost of inspection) would make this a most expensive venture. I guess I’ll have to diagnose it myself from here. So being a motherboard fault can you possibly point me in the right direction as to what possible components could be faulting please?

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