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low profille rpi4

jeromehess

working on a project and the rpi is great, but a little thinck

 

found a guy who was low profiling rpi 3s so i asked if he could do my 4

 

he said sure, so ii sent it to to him and he did a great job

 

replaced the double USB stack w/ singles abd got rid of 1 hdmi and the rj45, and 1 hdmi

 

just got it back and it wont boot, nno razzies nothing

 

could be a bad  secard  4s ive used have been sensitive, but then i remembered some conversations abouot the broadcom cpu having some shared USB/neworklines, so im wonderng if i need a jumper

 

any and all oideas appreiated\\yjx

Parents

  • I just want to confirm the details.

     

    You have a Pi 4 that is not working after the physical profile was reduced by removing the USB, HDMI and RJ45 connectors.

     

    You are looking for a reason why the Pi 4 is not working?

  • in reply to colporteur

    Well yes.

     

    Interesting finding now.

     

    The low profile works great, turns out that ALL my 4's are VERY sensitive to the SD card I use.

     

    Ive been buying the regular black sandisk cards from Target and they work great in everything BUT the RPI4.

     

    The part that got me, that SHOULD have been my 1st clue, was that the LEDs werent blinking. the 1st one was on steady, but the decond one, that should be blinking like a read light, never came on.

     

    I tried different image writer, the whole thing, nothing.

     

    someone on another forum said that they used video quality cards in their 4s, so i bought a few, slightly more $ but its working great!

     

    Wacky part was, Im assembling a NAS/FTP server and it booted and ran off one of the black sandisks for a week. Then I added some more drives, rebooted and it quit working!

     

    Moved to the video card and voila, works everytime!  The low profile is really a neat idea. its like the 3A but stronger. I just wish my soldering skills were up to that speed.....

  • in reply to jeromehess

    Great to hear it is working. It is not a hardware modification I would consider. I might use the low profile if it as a factory order option. Just because it can be done doesn't support doing it.

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