LCD screen reading disturbed

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LCD screen reading disturbed

Postby rahe55 » Tue Jun 05, 2018 3:45 pm

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 picture.

What can I do ?
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rahe55
 
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Re: LCD screen reading disturbed

Postby jye1 » Wed Jun 06, 2018 12:51 am

Please check the connections for the signals labelled "LCD_XXX" in the schematic. These are the control lines for the LCD. If all these connections are good the issue could be the LCD itself. You can contact JYETech at jyetech@163.com for replacement in that case.
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Re: LCD screen reading disturbed

Postby rahe55 » Wed Jun 06, 2018 3:49 pm

Thank you for fast reply - will do and come back with result .
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Re: LCD screen reading disturbed

Postby rahe55 » Sat Jun 16, 2018 4:45 pm

All lines from MCU to LCD checked for conductivity. Result : all ok
Also checked for isolation against each other : all ok

moved the LCD panel on its pins a little away from the main board : still not working as supposed - same fault as before.

So probably the LCD is disturbed . Would appreciate to receive replacement.

wbrgds
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Re: LCD screen reading disturbed

Postby rahe55 » Mon Jun 18, 2018 7:48 pm

have today mailed to the 168 - address with form and description - hope to receive replacement.

Thank you.
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Re: LCD screen reading disturbed

Postby rahe55 » Mon Jun 25, 2018 10:28 am

Hello ,

is a replacement under way ?

wbrfgds Ralf
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Re: LCD screen reading disturbed

Postby jye1 » Wed Jun 27, 2018 1:29 am

It should have been mailed if you received a confirmation email.
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Re: LCD screen reading disturbed

Postby rahe55 » Thu Jun 28, 2018 10:03 am

There was no reply yet.

So I contacted again.

got reply that I sent mail with not filled in form attached .
(thats true - for some reason I sent one mail with empty form 19.06.2018 11:08 LT - but later 13:18 one with the form filled in.

So today 28.06.2018 sent filled in form again.

Hope to be successful now.

Thank you
rahe55
 
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Re: LCD screen reading disturbed

Postby rahe55 » Sat Sep 01, 2018 12:58 am

Have received in the meantime shortly after mailing my request to the company a replacement LCD.

Thank you.

Have fitted same to the board but unfortunately no change in display - errors remain the same.

Since I have other projects -will come later for solving this .Possibly software or main pcb disturbed.

The Oscilloscope seems to run internally , but some settings are not effected by the pushbuttons.
Rotary switch and prescalers are working , setting of prescalers is reflected in the LCD.
Also complete picture of menu point 1 oscilloscope is displayed once point 4 recall waveform was selected.
The setting of the prescalers is displayed on the display and changing with the setting of the input sensitivity as expected.
The other items on the LCD screen cannot be influenced by the pushbuttons, i.e.
HOLD,AC,.1ms,vertical arrows, horizontal arrows(activated),AUTO,slope,vertical arrows for trigger. Strange.....

Any thoughts ?

Thank you.
rahe55
 
Posts: 15
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Re: LCD screen reading disturbed

Postby rahe55 » Thu Sep 27, 2018 8:25 am

Since I didn't mention it,

Firmwares in my DSO68 are as follows :

Bootloader: 113-6803-20
Main: 06801-060
Keypad:06802-030
PCB:

Did not change any of the above - should I flash with other Software (Main 113-06801-061 as per jyetech webpage) ??

Questions , questions .... :?:

Anybody running the above Firmwares with success ?

Thank you
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