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by gaeran
Fri Feb 05, 2016 11:22 pm
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD black lcd & no power up!!

Hi,

Sorry but, I can't find warranty guide for my lcd. Do you know where is the warranty guide for lcd?
I just have safety guide in my box.
texy wrote:Unfortunately you voided the warranty by attempting rework yourself, but I wish you luck......

Texy
by gaeran
Fri Feb 05, 2016 9:46 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD black lcd & no power up!!

Hi,
Sorry for late update.
I've just get back my LCD and AD board from local distributor. Now I found AD board was defected.

I would like to revive the AD board if I could Please help!

https://goo.gl/photos/hsSQXQunL8HNCarM9
https://goo.gl/photos/pnLz7QNQowFeL8738

Thank you.
by gaeran
Mon Jan 11, 2016 5:58 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD black lcd & no power up!!

Maybe we can find the error. Could you post some pictures from the board? So we can see how the desoldering was done? Then we could look into the board... Hi, You can see a picture with below link. http://thingiverse-production-new.s3.amazonaws.com/renders/69/07/c4/b0/7b/20151212_155705_preview_fea...
by gaeran
Thu Jan 07, 2016 12:29 pm
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD black lcd & no power up!!

Hi, I've got answer from local distributor. In my case, (I was remove USB port and 5 pin from AD board as below image link) because of my AD board was modified. they can not process RMA. So, I asked them if I can buy a new AD board, and answer was NO. This is so bad case. Regards, Kevin. Indeed bad...
by gaeran
Thu Jan 07, 2016 6:39 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD black lcd & no power up!!

Hi, I've got answer from local distributor. In my case, (I was remove USB port and 5 pin from AD board as below image link) because of my AD board was modified. they can not process RMA. http://thingiverse-production-new.s3.amazonaws.com/renders/69/07/c4/b0/7b/20151212_155705_preview_featured.jpg So...
by gaeran
Wed Dec 30, 2015 9:23 am
Forum: Troubleshooting
Topic: Raspbian Jessie and USB Audio device as default
Replies: 23
Views: 134931

Re: Raspbian Jessie and USB Audio device as default

Hi,

I found a link and this figure out my problem.
https://github.com/RPi-Distro/repo/issues/9

just replace volumealsa.so I can use USB audio without modify any files.

Regards,

Kevin.
by gaeran
Fri Dec 25, 2015 7:24 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD black lcd & no power up!!

Hi ulix,

Yesterday, I had asked to local Rpi distributor for check out the AD board status.
I believe they will shipping for RMA if it was defective.
or I could buy a new lcd. :(

Happy Christmas!!

Thank you.

Regards,
Kevin.
by gaeran
Wed Dec 23, 2015 1:22 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

How can I get Official 7" lcd board is dead or alive?

Hello?. I have problem with my official 7" LCD. please help!! Symptom : 1. the screen shows nothing = black 2. back-light not work. The flat ribbon cable is fine, connected right way. I have had powering up two ways. 5V -> pi -> lcd : not working 5V -> lcd -> pi : not working. The pi OS image is new...
by gaeran
Tue Dec 22, 2015 1:33 pm
Forum: Official Foundation Display
Topic: Touchscreen Display is not working :-(
Replies: 9
Views: 4461

Re: Touchscreen Display is not working :-(

I have this same problem. I bought two screens and have the problem with both. I did all the updates and followed the guide here - http://thepihut.com/blogs/raspberry-pi-tutorials/45295044-raspberry-pi-7-touch-screen-assembly-guide - but not getting signal on the screen. I get HDMI video output fin...
by gaeran
Mon Dec 21, 2015 11:50 pm
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD does not work!!

Hi RaTTuS, ulix,

power lcd -> pi.
It was not effective for me.
I rather check my lcd board.

Is it possible damage on lcd board if I feed 5.13V for the lcd power?

How can I get my lcd board's status dead or alive?

Thank you.
by gaeran
Mon Dec 21, 2015 9:32 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD does not work!!

I've tried
1. power from pi
2. smartphone power supply
3. usb power from pc

not tested lcd power to pi.

is there led on lcd board for identify power activity?.

how can I figure out the lcs board is working properly?

do you have a test method of lcd board?

Thank you.
Regards,
by gaeran
Mon Dec 21, 2015 5:57 am
Forum: Official Foundation Display
Topic: Touchscreen Display is not working :-(
Replies: 9
Views: 4461

Re: Touchscreen Display is not working :-(

Hi Diamond,

I have same problem. did you solve your problem with WHEEZY image?.
I have just tried JESSIE it's totally same as your problem.

Please let me know.

Thank you.
by gaeran
Mon Dec 21, 2015 2:23 am
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

Re: official 7" touchscreen LCD does not work!!

Hi, Thank you for the reply. ribbon cable is fine. all right way. I've checked out many times. but the screen is black. I didn't think about try with wheezy. but the JESSIE is the new one right?. I'll try wheezy today. let you know the results. many thanks. Regards, What does not work? Have you conn...
by gaeran
Sun Dec 20, 2015 2:04 pm
Forum: Official Foundation Display
Topic: official 7" touchscreen LCD black lcd & no power up!!
Replies: 22
Views: 5014

official 7" touchscreen LCD black lcd & no power up!!

Hello?. I have problem with my official 7" LCD. please help!! The ribbon cable is fine and connected right way. when I power up, the screen shows nothing and back-light is not work. I have had powering two ways. 5V -> pi -> lcd : not working 5V -> lcd -> pi : not working. here is what I did. 1. new ...
by gaeran
Fri Feb 08, 2013 12:47 pm
Forum: Troubleshooting
Topic: [BUG]Scratch not possible Korean input!!
Replies: 0
Views: 535

[BUG]Scratch not possible Korean input!!

Hello? I just found Korean input Bugs when teaching Scratch to my boys. They don't know English, so I started with Korean. Soon, I have got serious problem to teaching Scratch. because I can't put Korean letters to scratch Costumes name, file name, etc.. all of text input box in the Scratch is just ...
by gaeran
Sat Feb 02, 2013 11:08 pm
Forum: Troubleshooting
Topic: No keyboard, mouse or network
Replies: 4
Views: 795

Re: No keyboard, mouse or network

In my case, when OS in SD card has some problem, you can just red LED of power. and the others shows nothing.

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