Please select To the mobile version | Continue to access the desktop computer version

OrangePi

 Login            
 Register            
Search
Hot search: orangepi
View: 4162|Reply: 5

OrangePi PC TV out problem

[Copy link]

1

Threads

6

Posts

65

Credits

Registered member

Rank: 2

Credits
65
Post time 2015-12-6 20:46:56 | Show all posts |Read mode
Edited by Peca at 2015-12-6 21:13

                                
After receiving my OPI PC I tried booting Ubuntuimage by Loboris and using the settings for TVout by magicse.
There was a signal on tv but very distorted,tilted, unusable. It seemed like there was some interference. So Ichecked the OPI PC schematics to find out:
https://www.dropbox.com/s/50831tycvc3avzv/schematic1.png?dl=0

and then looked for PJ-3533 jack pinout on google to find out thatthere are two jacks with the same name but on one the pinout is likeit should be by OPI PC schematic(pins 1 and 2 shortened when jack isinserted) while on other pins 1 and 5 are shortened when jack isinserted.
https://www.dropbox.com/s/kead8vxf49ngkmn/jack1.png?dl=0

Of course the problem was that on my OPI PC board (ver 1.2) it wasthe wrong jack installed that shortens AUDIO-R to GND when jack isinserted causing the problems with TV out.
I soldered the connector directly to pins 1(GND) and 3(CVBS)on the board jack.
https://www.dropbox.com/s/p9lyd9n978wzi3r/jack2.png?dl=0
https://www.dropbox.com/s/wvkorjokesysaw0/TVout1.png?dl=0
                                
And of course the TV out worked.
https://www.dropbox.com/s/eqw74cwiqqk3fs5/TVout2.png?dl=0
                                
So there you go there is a wrong jack installed on board! In order tofix it properly you should find the appropriate jack and replace it.




0

Threads

5

Posts

72

Credits

Registered member

Rank: 2

Credits
72
Post time 2015-12-8 22:41:25 | Show all posts
Hi, Peca.
What script.bin do you use on your OPI PC for TVout - custom or from OrangePI-PC_Ubuntu_Vivid_Mate.img? If custom, may i have it? I still can't make it working.

1

Threads

6

Posts

65

Credits

Registered member

Rank: 2

Credits
65
 Author| Post time 2015-12-9 04:03:34 | Show all posts
I used the fex file from Loboris and made changes according to magicse suggestions that I put the link in first post. Then converter it to bin with fex2bin.
If Im not wrong this is the script.bin I used.
script.bin
Rename it to script.bin

0

Threads

5

Posts

72

Credits

Registered member

Rank: 2

Credits
72
Post time 2015-12-9 14:43:12 | Show all posts
Edited by Vitaliy at 2015-12-9 21:30

Thanks, Peca. But the patient has not recovered. I connected my digital oscilloscope directly to 1 and 3 pads - signal has not changed.
Only syncro pulse and colour synchro burst, without brightness component. So, no picture. Magic.



[EDIT]
Patient has recovered. I forget to load module tv. Now picture is present. Thank you very much!

1

Threads

6

Posts

65

Credits

Registered member

Rank: 2

Credits
65
 Author| Post time 2015-12-10 00:32:04 | Show all posts
I am glad you got it working. How is the picture quality? On my lousy tv picture quality was poor and there was some overscan.

0

Threads

5

Posts

72

Credits

Registered member

Rank: 2

Credits
72
Post time 2015-12-10 22:21:20 | Show all posts
Edited by Vitaliy at 2015-12-10 22:23

My TV picture quality is OK. I explored jack on plate by microscope, nothing special, it's not wrong.
Contacts inside lays on corresponding rings, no interconnections.
But yellow and red connectors are swapped. So, red is video.
You have to log in before you can reply Login | Register

Points Rules

Archiver|Mobile edition|Darkroom|OrangePi En ( 粤ICP备14086627号-2

2019-10-17 17:07 GMT+8 , Processed in 0.032181 second(s), 22 queries .

Powered by Discuz! X3.2

© 2014-2015 orangepibbs en.

Quick Reply To Top Return to the list