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Hantek 2000 series - 2C42/2C72/2D42/2D72

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richieHH:
I've had mine plugged into the mains via the supplied USB plug and cable and its still on one bar after 4 hours. This is ridiculous.

ataradov:
I had the same problem. There is a power manager/selector IC that dies and it stops charging. ICs are available, but I never bothered to replace it, so I don't know if it is the only problem.

Microcheap:

--- Quote from: richieHH on September 09, 2019, 02:39:53 pm ---Tell me, how accurate have you found the voltmeter? Its telling my a brand new Duracell 9v is 9.25 v and a 1.5v is 1.73v - this seems WAY out to me.

--- End quote ---
The multimeter is precise, but a few months ago there was a batch of devices with problems in DMM mode.

Do this tests: put the multimeter in DC V mode and short the test leads to see if the display show only 0.000V, do the same with mV. After that, check the resistance (OHM), short the leads and you should see 0 ohm or a very low value. Then, test the diode mode, with nothing connected you should see 0L. Let me known the results.

Pinkus:

--- Quote from: Microcheap on September 09, 2019, 09:57:40 pm ---Do this tests: put the multimeter in DC V mode and short the test leads to see if the display show only 0.000V, do the same with mV. After that, check the resistance (OHM), short the leads and you should see 0 ohm or a very low value. Then, test the diode mode, with nothing connected you should see 0L. Let me known the results.

--- End quote ---
Mine does all this ^^^ and it is consistent with my other multimeter. I am using this tool only as a backup scope (for car, remote quick checks, AC power lines etc.) and so far I am satisfied. It has exceeded my (not too high) expectations. It is definately usable (not like the toy crap you can get for $50).
However, I would not recommend it as your main oscilloscope, as the operation (due to the UI / missing knobs) proved to be too complicated and lengthy. If you want a cheap entry level scope better go with desktop with designated knobs for misc. functions, e.g.: a Keysight 1000x or a cheap Rigol or Siglent. Using this Hantek (or all the other hand held device from other manufacturers) as your one and only oscilloscopes will drive you crazy soon and you will buy a real oscilloscope soon after anyway. As I said: for using it as a 2nd / backup scope it is fine (or if you need an oscilloscope only once a year).

P.S.
Hint: I tried three times to purchase the 2C42 (the cheapest variant) from (different) sellers on Ali with the lowest prices and three times they tried to fu** me by sending me fake tracking # and talking me to trust them and not to complain at Ali but wait. Of course none of these devices ever showed up (I got my money back from Ali). I then ordered at Ebay and had my device delivered within a week (paid 10% more than at the cheapest seller on Ali).

jake@cs:
I've dumped the firmware from a new 2D72, and stored in on our GitHub at https://github.com/circuit-specialists/Hantek-2D72. Now there is a permanent place to get the files, and the README will have a list of all the mods I've found so far. Later, I'm going to order in some ST-Link V2 to sell as products in case people need to flash or unbrick their devices.

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