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Old 06-28-2020, 04:49 PM   #1
JUAN MANUEL
New Member
 
Join Date: Apr 2017
City & State: JAEN
My Country: ESPAÑA
Line Voltage: 230 VAC 60HZ
I'm a: Knowledge Seeker
Posts: 7
Default Hantek 6022BE IN SHORT CIRCUIT

Hello and thanks to everyone
I have a Hantek 6022BE brand oscilloscope which due to my error causes a short in a board at a network voltage of 220V, and as expected the oscilloscope does not work

He replaced a protection zener diode and a fuse resistor at the input that were short but the oscilloscope still does not work for me so I keep investigating

Injection 5V (With regulated source) at the input and gives me a consumption of 300 mAh and two integrated with 74HC4051 license plate (multiplexer and demultiplexer) are heated, each of these integrated corresponds to the input of the oscilloscope probes

I give tension directly to these integrated (vcc and ground) and they heat up and I continue with the same consumption, but when I test them with the multimeter they do not give me short between these two terminals (vcc and ground)

Before I lift them and continue checking I would like if you have any experience or problem related to these types of integrates and if they are prone to short

Attached datashep of the integrated and their situation on the board
Attached Images
File Type: jpg Hantek-6022BE-Oscilloscoop-binnenkant.jpg (813.6 KB, 8 views)
File Type: jpg Sun Jun 28 02-47-31.jpg (90.9 KB, 8 views)
Attached Files
File Type: pdf 74HC_HCT4051.pdf (344.0 KB, 1 views)
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