Search found 15 matches

by rahe55
Sun Jun 10, 2018 11:06 am
Forum: DSO 112 & 112A (Coral)
Topic: Problems with vertical possition calibration (deflection)
Replies: 5
Views: 18320

Re: Problems with vertical possition calibration (deflection

ok - I did so - received form which I filled in and returned.


Thanks
by rahe55
Wed Jun 06, 2018 3:49 pm
Forum: DSO 068
Topic: LCD screen reading disturbed
Replies: 11
Views: 19927

Re: LCD screen reading disturbed

Thank you for fast reply - will do and come back with result .
by rahe55
Tue Jun 05, 2018 3:45 pm
Forum: DSO 068
Topic: LCD screen reading disturbed
Replies: 11
Views: 19927

LCD screen reading disturbed

On my DSO 068 the Display is disturbed. See attached photos (first on bottom , last on top consequently ). The bigger left side of the screen is is written to by the traces of the oscilloscope while the right side is not written except for the 10mV. Changing to the menu erases all traces of previous...
by rahe55
Tue Jun 05, 2018 2:22 pm
Forum: DSO 112 & 112A (Coral)
Topic: Problems with vertical possition calibration (deflection)
Replies: 5
Views: 18320

Re: Problems with vertical possition calibration (deflection

I assembled the 112A (firmware .....-211) and have a similar problem : The trace remains at the top of the screen, whatever setting or calibration I try. Pushing Pos Cal. gives clicking of relais as well as Default. Otherwise device seems to be working ok. Can access menus , move cursors for trigger...
by rahe55
Tue Jun 05, 2018 1:28 pm
Forum: DSO 068
Topic: DSO068 LED wont Blink Replaced Y1 and C21,C22
Replies: 2
Views: 4052

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

Same thing happened to me - crystal defective . Detected by old HAMEG 304 Oscilloscope 30 MHz at TP14 . I suspected damaged by high temperature (small housing soldered to PCB - am using lead-free solder / 320°C setting of iron). Replaced by usual (as per Arduino Uno) 16 MHz crystal with larger housi...