Search found 1221 matches

by jye1
Mon Jan 21, 2019 4:58 pm
Forum: DSO 068
Topic: DSO 068 LCD screen garbled
Replies: 2
Views: 11983

Re: DSO 068 LCD screen garbled

Can you post photos of the board (both sides) please? Connection is the major cause for this issue. Please also check the solder joints at the pre-soldered MCU.
by jye1
Mon Jan 14, 2019 3:40 pm
Forum: DSO Shell
Topic: replace stm32
Replies: 27
Views: 33131

Re: replace stm32

You can use a Uart-USB converter to upgrade firmware. No special programmer required. Please see https://jyetech.com/Products/LcdScope/D ... rmware.pdf . After firmware is flashed and running pressing SEC/DIV + TRIGGER + ADJ simultaneously will allow you to enter activation code.
by jye1
Sun Jan 13, 2019 1:49 pm
Forum: DSO Shell
Topic: replace stm32
Replies: 27
Views: 33131

Re: replace stm32

You can contact us at jyetek@gmail.com with the number on sticker to get an activation code. Enter the code after flash firmware.
by jye1
Sat Jan 12, 2019 3:28 am
Forum: DSO138
Topic: Poor support
Replies: 1
Views: 3084

Re: Poor support

Can you let us know the email address you used to contact us? Or can you send again to jyetek@gmail.com?
by jye1
Sat Jan 12, 2019 3:25 am
Forum: DSO Shell
Topic: out of screen trace , (large -ve offset,wrong test voltage
Replies: 17
Views: 16792

Re: out of screen trace , (large -ve offset,wrong test volta

Please try disconnecting the negative power supply from load by cutting trace as shown in the attachment. Then check if you can get V-. If V- restores that means there might be short with in the load. If V- still fails replace C11 and C12 respectively to see if V- appears. If not try replace U5. V-_...
by jye1
Sat Jan 12, 2019 3:03 am
Forum: DSO138mini
Topic: Question about using Portable power bank or Laptop
Replies: 1
Views: 10097

Re: Question about using Portable power bank or Laptop

Yes this could be grounding related. Or maybe just because the pick-up was very small. You can increase the sensitivity and see.
by jye1
Sat Dec 29, 2018 11:53 am
Forum: DSO138mini
Topic: DSO138mini Freezes when I press any button
Replies: 6
Views: 15916

Re: DSO138mini Freezes when I press any button

Can you test how it behaviors by moving one of the slide switches?
by jye1
Sat Dec 29, 2018 11:50 am
Forum: DSO Shell
Topic: V4 voltage is correct but positive
Replies: 3
Views: 3952

Re: V4 voltage is correct but positive

It was a "~" sign but looks like a "-" sign.
by jye1
Sat Dec 29, 2018 11:48 am
Forum: DSO Shell
Topic: Cut LCD cable
Replies: 2
Views: 3634

Re: Cut LCD cable

Please contact JYETech by email at jyetech@163.com. Please include photos showing the issue and the board ID. Thank you.
by jye1
Thu Dec 27, 2018 4:33 am
Forum: FG085
Topic: AVR Programmer
Replies: 14
Views: 28116

Re: AVR Programmer

Please contact JYETech at jyetek@gmail.com. We're happy to send you another programmer for free so you can test out.