Mine came with FW version 20210416 and I was very disappointed to see how it freezes 10 times in first 10 minutes of tests, right after unboxing it. Hantek had just released new FW that was spread via email to unhappy customers at the time, before it became widely available, first on Davidalpha google drive. Before that, some guys thought that after mounting heatsinks, fans or both can cure that problem, but I believe it was just misleading information, because they didn't get to the root cause of the problem. As I observed that freezing problem occurred just when i moved the encoder for vertical position, I was able to freeze it for even 10 seconds after cold switch on, so I felt that the reason was not the heat. Few days later, after the new firmware had been installed I was unable to make it to hang/freeze no matter what I do or how hot it is.
So once and forever, there is no need to make any cooling modifications in my opinion. Of course, I like electronic equipments to run cool, but there are lot of them, that can reach 90°C and even run on such temperatures. This is a cheap oscilloscope, it does what it is designed to do, or almost
. Some people may expect to use it for 20+ years and they took measures to protect their investment, mounting cooling stuff, I think if everything goes well, the technology will change untill then and we can buy something better. If it was Rohde & Schwarz I would take some measures also, but most probably they already had been taken at the design stage, so you get what you pay for, as usual. In fact, HANTEK DSO is not bad for that money, lots of functions, at least as a Digital Storage Oscilloscope works well with good amount of memory.
Cons: XY mode can be better, FFT also, internal generator is basic. For me, it is nonsense to have FFT and a generator without Bode plot, but I accept all of them, bearing in mind the cost of ownership.
Happy measurements!