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HT6254BC - short circuit

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Post time 2019-12-28 20:12:19 | Show all posts |Read mode
Hi.
Few months ago I bought Hantek 6254BC PC USB Oscilloscope, PCB DSO6XX4 V1.08, S/N:64C08762.
I accidentaly while measuring some power device haven't disconnected power supply from laptop.
USB Port was blown and HT6254BC damaged.
After measuring U907 had short circuit, U19 and U4 had no output voltage.
I replaced all 3 SIK sot23-5 converters, so after that +1,25V, +1,8V, +3,3V came back.
There's still some issue because after connecting device is not recognised.
I did some measurements:
Tp11 +4,830V; Tp5 +4,815V; Tp4 +4,633V; Tp10 -4,495V; Tp18 +1,579V; "+1,25V" +1,258V; "+1,8V" +1,802V; "+3,3V" +3,307V; "3V3" +3,307V; Tp14 +3,214V.
After connecting to USB diode D11 light for a while, diode J5 light red then very short green and then blinking red.
Please some advice about further examining and reapairing.


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Post time 2019-12-31 11:49:32 | Show all posts
Please change this chip to try: 68013A

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 Author| Post time 2020-1-11 06:17:20 | Show all posts
I ordered this USB controller chip CY7C68013A and I wait for shipping. I'll write on board if it solved the issue with my oscilloscope.

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 Author| Post time 2020-3-8 02:39:18 | Show all posts
Marcin replied at 2020-1-11 06:17
I ordered this USB controller chip CY7C68013A and I wait for shipping. I'll write on board if it sol ...

Hi. I replaced CY7C68013A. It didn't solve the problem. My USB Oscilloscpe still shows as unrecognized device. What to check then? Maybe I need to reflash XC6SLX16?

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Post time 2020-3-9 16:08:19 | Show all posts
Please upload a image to see what it shows in the Device Manager?

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 Author| Post time 2020-3-13 00:14:46 | Show all posts
wangshuang replied at 2020-3-9 16:08
Please upload a image to see what it shows in the Device Manager?

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Post time 2020-3-14 09:06:12 | Show all posts
Please update the driver by right click Unknown Device, attached latest driver in following link.
http://hantek.com/en/ProductDetail_2_9163.html

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 Author| Post time 2020-3-14 20:43:03 | Show all posts
wangshuang replied at 2020-3-14 09:06
Please update the driver by right click Unknown Device, attached latest driver in following link.
ht ...

It's been already done. Before failure USB Oscilloscope worked fine. Now is not recognized by OS, it looks like there's no communication between CY7C68013A and XC6SLX16 or some memory failure.


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Post time 2020-3-17 13:25:16 | Show all posts
Please refer to this forum to resolve it.
https://www.eediscuss.com/forum. ... p;highlight=unknown

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 Author| Post time 2020-3-28 18:21:59 | Show all posts
Edited by Marcin at 2020-3-28 18:50

I reprogrammed my HT6254BC with firmware in link, then installed regular soft Hantek 6000 ver.2.2.5 with scope drivers. I had to resolder CY7C68013A one more time, now scope works, I'll check it. Thanks for help.




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