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rPi4 no longer capable of HDMI output. Eeprom recovery did not help

Raspberry Pi Asked on October 5, 2021

I have a rPi 4 that died on me, in two stages:

  • First it would only show a yellow screen on HDMI outputs.
  • Then later, it completely stopped outputting HDMI altogether. It seems to be in a reboot loop?

Things I have tried:

  • Replaced power supply.
  • Replaced monitor.
  • eeprom recovery using Ubuntu imager utility to write SD card.
  • eeprom recovery using Mac OS imager utility to write SD card.
  • eeprom recovery via manual copy of eeprom recovery files to FAT SD card.
  • Tried both HDMI output ports (neither shows physical damage.)
  • Created new OS image.

What else can I try before I scrap this unit, and order a new one?

The rPi has been working just fine for a year or so, before this happened out of the blue.

plot-twist: It was a faulty HDMI cable. Apparently they can break down with normal use.

One Answer

The question has a solution. in the comments it is noted, that the HDMI cable was broken. Replacing it with a new one solved the problem.

Correct answer by Ingo on October 5, 2021

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