Search found 12 matches

by jjay
Wed May 02, 2018 7:23 pm
Forum: DSO 068
Topic: DSO068 Working 100% now the Adj dial and buttons wont work
Replies: 9
Views: 5995

Re: U5 Bad. Device Replacement

Thanks, but after tinkering and doing as few resets
i've got the device working again.. or so it seems,I will play with
it over the next week or so and see if its fixed or I just got lucky.
If I still have a problem I will drop you an email for replacement.
by jjay
Tue May 01, 2018 3:55 pm
Forum: DSO 068
Topic: DSO068 Working 100% now the Adj dial and buttons wont work
Replies: 9
Views: 5995

Re: DSO068 Working 100% now the Adj dial and buttons wont wo

R24, its a resistor at this position. without removing it from the board I cannot tell if its working
properly. while connected to the board I get a 1k resistance
by jjay
Fri Apr 27, 2018 11:02 am
Forum: DSO 068
Topic: DSO068 Working 100% now the Adj dial and buttons wont work
Replies: 9
Views: 5995

Re: DSO068 Working 100% now the Adj dial and buttons wont wo

Using USB cable supplied with the device for power. not using a battery yet.
power supplied via a 5V USB power supply.
All voltage test pass, +5v under JP4 on the board shows 5V.
by jjay
Wed Apr 25, 2018 6:19 pm
Forum: DSO 068
Topic: DSO068 Working 100% now the Adj dial and buttons wont work
Replies: 9
Views: 5995

was working for 5 minutes now Crashes Again

The scope is broken again. I've done the reset procedure and the scope worked for a short 5 minutes. now it broken again, that is the Adj dial and buttons do not respond. though I'm still getting a waveform on the screen. Any other tips on how to reset the device besides jumping PF6 in J7 with GND i...
by jjay
Tue Apr 17, 2018 6:38 pm
Forum: DSO 068
Topic: DSO068 Working 100% now the Adj dial and buttons wont work
Replies: 9
Views: 5995

DSO068 Working. Adj dial and btns work after reset

I have read the instructions on the thread, left me even more confused!
i found a youtube video that shows how to do the reset,
it explains the process very clearly, and my scope is working again.
https://www.youtube.com/watch?v=2oniUUqrxUY
by jjay
Sat Apr 14, 2018 9:00 am
Forum: DSO 068
Topic: DSO068 Working 100% now the Adj dial and buttons wont work
Replies: 9
Views: 5995

DSO068 Working 100% now the Adj dial and buttons wont work

I have had the completed unit working and everything seems to work fine for the last 2 weeks. Originally I had a problem with the crystal not working, straight out the box! I replaced it with a higher freq one I had laying around. everything worked nicely until yesterday I noticed that the Adj dial ...
by jjay
Fri Apr 06, 2018 11:41 am
Forum: DSO 068
Topic: DSO068 LED wont Blink Replaced Y1 and C21,C22
Replies: 2
Views: 2939

Re: DSO068 LED wont Blink Replaced Y1 and C21,C22

The crystal oscillator was faulty right out the box, I managed to pick up a pack of 32.768KHz. I could not find an exact match on the websites I checked (at least with reasonable shipping time) for a replacement for the 20MHz crystal that came with the scope. Anycase I got the scope to work. all vol...
by jjay
Sat Mar 31, 2018 6:49 pm
Forum: DSO 068
Topic: DSO068 LED wont Blink Replaced Y1 and C21,C22
Replies: 2
Views: 2939

DSO068 LED wont Blink Replaced Y1 and C21,C22

I have been trying to setup the scope to use USB as its power source. I have passed the first few steps in the power up test. I get 5V and pass all test until I got to press SW12 and see waited to see the LED blink. Well nothing happens. I checked the LED polarity and its in the correct way. I close...
by jjay
Sat Mar 10, 2018 10:46 am
Forum: DSO138mini
Topic: NEW DSO138 Mini no trace
Replies: 7
Views: 13493

Re: NEW DSO138 Mini no trace

Thanks for all tips and the feedback, Nationwide. As it turns out my original problem had nothing to do with the power. My problem was actually fixed by replacing choke L1. After much testing I can confirm that the NEW DSO138 Mini, requires power to be supplied via the USB (5v) input port on the scr...
by jjay
Sun Feb 25, 2018 1:46 pm
Forum: DSO138mini
Topic: NEW DSO138 Mini no trace
Replies: 7
Views: 13493

Re: NEW DSO138 Mini no trace

Thank you for the advice. The scope works well with L2 shorted. The choke was defective, right out the box.. so much for Q.C. label on the box (sorry to say, someone dropped the ball). I searched the web to try find a choke, with no luck. I was gonna leave it L2 shorted as the scope seems to work fi...