FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]

Re: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]

Postby jye1 » Sat Jun 16, 2018 2:04 pm

All the schematics are here https://jyetech.com/Products/LcdScope/e150.php .

It is okay to connect the grounds with a separate wire. Did you check the small PCB was installed on the correct side?
jye1
 
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Re: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]

Postby Francis » Sat Jun 16, 2018 3:26 pm

Finaly,
I just strapped the grounds between the two PCB's, and now it does work fine.
The problem was due probably to a ground plane error in the multi-layer PCB.
Regards
Francis
 
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Re: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]

Postby echase » Thu Aug 16, 2018 10:39 am

My C3 works fine but C5 has no effect. Fortunately the signal is flat for 3.3V so I don’t need to adjust it. If I understand your explanation above correctly C5 should alter the waveform if C6 and C4 are the correct real values, which they must be if the signal is flat. So is my C5 defective?

I put a photo of my screen here. viewtopic.php?f=19&t=1206&hilit=michar71&start=10
echase
 
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Re: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]

Postby andymouse » Tue Sep 04, 2018 1:07 pm

KimZ wrote:Hi guys
I have a DSO shell, YLmN6N7W and have a problem with the rotary encoder. All voltages are good, all resistances are good EXCEPT only problem is open circuit db0 to pin 1 of r/e.
The problem is that I can't drop any selected value - ie indicators go to top of the screen. R5 is good by the way.
Any ideas?
Thanks in anticipation,
KimZ

edited: can i just use a jumper ds0 via additional 1k resistor to pin 1? Ah, encoder IS fixed to the correct side of the board!

Hi
I have the same problem but without open circuit db0 to pin1 every thing else you mentioned is the same. Do you have a solution pls?
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