BIGD53
Posts: 4
Joined: Sat Jun 09, 2018 11:22 pm

Raspberry Pi 7inch Touchscreen not working

Sat Jun 09, 2018 11:34 pm

Hello,

I have recently purchased a raspberry pi 7inch touchscreen. It was working fine yesterday but today when I plug it in it shows grey-black lines then it goes completely black. The red power light does not come on when the pi is plugged into the screen. I have my pi wired via GPIO pins and a DSI ribbon cable.

Thanks
P.S. - I am using a RPI 3 model B

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DougieLawson
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Location: Basingstoke, UK
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Re: Raspberry Pi 7inch Touchscreen not working

Sun Jun 10, 2018 11:48 am

Pull the ribbon cable and re-seat it at both ends.
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BIGD53
Posts: 4
Joined: Sat Jun 09, 2018 11:22 pm

Re: Raspberry Pi 7inch Touchscreen not working

Sun Jun 10, 2018 2:14 pm

Thank you. :D I have tried this on multiple occasions already and found that I needed a new cable. So I have a new cable and I have re-seated it multiple times. I don't think the cable is a problem anymore. Could the screen need a firmware update or something of the sort?

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DougieLawson
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Re: Raspberry Pi 7inch Touchscreen not working

Sun Jun 10, 2018 2:16 pm

Get a copy of Raspbian, Etcher and a fresh new SDCard.
Try booting that.
Microprocessor, Raspberry Pi & Arduino Hacker
Mainframe database troubleshooter
MQTT Evangelist
Twitter: @DougieLawson

2012-18: 1B*5, 2B*2, B+, A+, Z, ZW, 3Bs*3, 3B+

Any DMs sent on Twitter will be answered next month.

BIGD53
Posts: 4
Joined: Sat Jun 09, 2018 11:22 pm

Re: Raspberry Pi 7inch Touchscreen not working

Sun Jun 10, 2018 2:20 pm

I will try this tonight. Thanks. I'm not sure if it is the problem though because the green light comes on which means it registers the sd card. I have also accessed my pi via hdmi and it worked fine.

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DougieLawson
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Joined: Sun Jun 16, 2013 11:19 pm
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Re: Raspberry Pi 7inch Touchscreen not working

Sun Jun 10, 2018 2:53 pm

Before you attempt to diagnose ANY hardware anomaly you need to be sure the software/firmware is working. Getting a fresh copy of Raspbian is a way to ensure that.
Microprocessor, Raspberry Pi & Arduino Hacker
Mainframe database troubleshooter
MQTT Evangelist
Twitter: @DougieLawson

2012-18: 1B*5, 2B*2, B+, A+, Z, ZW, 3Bs*3, 3B+

Any DMs sent on Twitter will be answered next month.

BIGD53
Posts: 4
Joined: Sat Jun 09, 2018 11:22 pm

Re: Raspberry Pi 7inch Touchscreen not working

Wed Jun 13, 2018 3:29 pm

Got it. I am currently ordering a micro sd card on Amazon. I will test the new rasbian soon.

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