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by Marche10
Wed Jun 17, 2020 10:02 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem: PI boots only when touching pin 28 gpio

pidd wrote: ↑
Wed Jun 17, 2020 5:05 pm
 The second section titled "Recovery" on the download page https://www.raspberrypi.org/downloads/
You have performed online raspberry image recovery.! you have some files to try manually
by Marche10
Wed Jun 17, 2020 4:58 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem: PI boots only when touching pin 28 gpio

Could it be the EEPROM contents are corrupted and a Recovery SD might fix it - even if you have to play with pin 28 to get the recovery SD to work? I already performed recovery with raspberry image.! So also download stable versions from the page.! If you have any to try send a link and I try I don...
by Marche10
Wed Jun 17, 2020 4:28 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem: PI boots only when touching pin 28 gpio

3* vídeo problem
Resistencia 2k
Bridge 6-28

https://youtu.be/l1losZkN6fg
by Marche10
Wed Jun 17, 2020 3:57 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

estimated yesterday perform tests with a resistance 10 and 20k also making ground with pin 5, 39 etc. I disconnect and connect the board and it continues with the same problem. once connected if the earth is disconnected and I reconnect there it starts normal.! but if I leave the cables bridging it...
by Marche10
Wed Jun 17, 2020 2:08 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

This is really strange! As your video's show you are stuck in the "rainbow screen", which is a selftest of the GPU done just before ARM code is started. If it doesn't disappear that means that either ARM code can't run, or gets stuck in a loop before it reaches the part where the video drivers are ...
by Marche10
Wed Jun 17, 2020 12:30 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

I did not see the red LED go out but if it is then that would indicate your power supply is not supplying 5V under load , red LED goes out when voltage drops below 4.65V if it still does not boot correctly with a good power supply ( red LED not going out ) then I would say testing with a fresh inst...
by Marche10
Wed Jun 17, 2020 12:16 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

So when you did what you showed us in the video was it with a fresh copy of raspberry pi OS lite on the SD card with nothing else installed ? exactly! I had raspbian installed.! I connect power and nothing lies, only the green light blinks 3 times and the turns off. Led red On.! if I touch pin 28 g...
by Marche10
Wed Jun 17, 2020 12:38 am
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

pcmanbob wrote: ↑
Tue Jun 16, 2020 5:39 pm
 If you have another SD card I would suggest you try a fresh copy of raspberry pi OS and see if your pi will boot correctly.

Even the lite version would do for this test.
Vídeo my problem

https://youtu.be/C_5F3zQxc1I
by Marche10
Wed Jun 17, 2020 12:37 am
Forum: Troubleshooting
Topic: Problem boot raspberry pi 4b - color display
Replies: 5
Views: 193

Re: Problem boot raspberry pi 4b - color display

B.Goode wrote: ↑
Mon Jun 15, 2020 3:20 pm
 I think the conclusion is probably that the add-on board using GPIO1/Pin28 is NOT complying with the HAT specification.

Vídeo

https://youtu.be/C_5F3zQxc1I
by Marche10
Wed Jun 17, 2020 12:32 am
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

If you have another SD card I would suggest you try a fresh copy of raspberry pi OS and see if your pi will boot correctly. Even the lite version would do for this test. estimate buy 2 new cards different brands and speeds.! still without booting.! I did recovery from eeprom with app raspberri imag...
by Marche10
Tue Jun 16, 2020 8:59 pm
Forum: Español
Topic: Problemas de instalación de raspbian en raspberry
Replies: 4
Views: 610

Re: Problemas de instalación de raspbian en raspberry

amigo tengo un problema similar ...trata haciendo masa al pin 28 de tu gpio .... la mia anda de esa manera toco con un cable pin 28 y anda normal
by Marche10
Tue Jun 16, 2020 6:39 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

If you have another SD card I would suggest you try a fresh copy of raspberry pi OS and see if your pi will boot correctly. Even the lite version would do for this test. estimate buy 2 new cards different brands and speeds.! still without booting.! I did recovery from eeprom with app raspberri imag...
by Marche10
Tue Jun 16, 2020 5:34 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

I want it to boot normal.! I do not want to occupy anything additional.! How can I get it back to normality? Do you have anything connected to the 40-way header of your RPi board? If so, try removing it (after removing power from the board) and reboot without it. I have nothing connected to the 40 ...
by Marche10
Tue Jun 16, 2020 4:23 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

Help.!!!!
by Marche10
Mon Jun 15, 2020 7:01 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

I want it to boot normal.! I do not want to occupy anything additional.! How can I get it back to normality?
by Marche10
Mon Jun 15, 2020 3:02 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Re: Problem boot - only pin 28 gpio

Okay.! I place an operating system in sd memory, insert and connect power.! the raspberry does not boot a screen remains with colors.! Playing I realized that by making ground (-) on pin 28 the raspberry starts normal.! but I ground on that pin I have the color screen ————————————- Ok.! coloco siste...
by Marche10
Mon Jun 15, 2020 1:43 pm
Forum: Troubleshooting
Topic: Problem: PI boots only when touching pin 28 gpio
Replies: 32
Views: 957

Problem: PI boots only when touching pin 28 gpio

Hello how are you.! I need help .! The raspberry does not boot me, it stays with the color screen.! playing I realized that playing the gpio pin 28 boots normal.! but I do not know how I can do for what normal boot I have. raspberry pi 4b uk - samsung evo 32 sd memory - raspian online image (raspber...
by Marche10
Sat Jun 13, 2020 1:05 am
Forum: Troubleshooting
Topic: Problem boot raspberry pi 4b - color display
Replies: 5
Views: 193

Problem boot raspberry pi 4b - color display

Hello how are you.! I need help .! The raspberry does not boot me, it stays with the color screen.! playing I realized that playing the gpio pin 28 boots normal.! but I do not know how I can make the problem I have have a normal boot attached video. raspberry pi 4b uk - samsung evo 32 sd memory - ra...

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