Hantek DSO-4102C fix or send back

jstbrowsin

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.

jstbrowsin

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.

jstbrowsin

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?

jstbrowsin

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

thanks amy

jstbrowsin

The -7v rail is at -8.4v. All the rest of the rail voltages are correct.

jstbrowsin

Bump! Does anyone here have any idea how to fix this please?

jstbrowsin

Can you tell me what the fault is with the main board please Amy? I may be able to fix it myself.

jstbrowsin

Bump! Anyone please?

jstbrowsin

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???

jstbrowsin

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?