mahjongg wrote: ↑
Thu Aug 17, 2017 1:29 am
Thats the normal state when not booting, or just in rest, at least for all recent PI's, except the Zero (w).
So it basically means it hasn't started trying to boot form the microSD card? Since the network interface isn't even being enabled, it's not getting very far, if it actually tries to start to boot.
Sorry but you seem to think there is a relation between "doing something with USB" and the fact that your PI doesn't boot. I can say with certainty that such a connection is very very unlikely
Unlikely yes, but I couldn't help notice the others who's Pi seem to have died that way. Maybe connecting/disconnecting caused a power related problem that damaged something that the Pi needs to be able to boot. (I'm just thinking out loud here)
Update that card in your PIB+ and try again, just that a card works on an older PI doesn't automatically mean that it also works in a newer one, although normally it should show at least the GPU test (rainbow screen).
Did that, the same way I've done a bunch of times before, with Win32DiskImager and the most recent image of Raspbian jessie Lite.
The result is the same, works in other Pi's (Pi1, PiZW and a recently bought Pi3), not in my Pi2.
Reasons why any PI suddenly doesn't boot are manyfold, but include:
- a (partially) blown polyfuse.
- Broken pins inside the sd-card slot
- Shorts inside the SD-card slot
- A SoC that was damaged by static electricity, or simply by mains voltage somehow leaking through the PSU, and because the TV isn't connected to a grounded plug
- Some GPIO pin was connected to a voltage (relative to the ground of the PI, that was greater than 3.3Volt (say to +5V) which causes the PI's SoC to become damaged
- A PI damaged because it has fallen on the ground, and so became damaged somehow, for example due to a broken crystal
- And any number of other damages that can occur
- polyfuse: From what I know, that should solve itself after a day or so without power. But even if it was this, the powerled shouldn't be on I believe.
- Broken pins inside the sd-card slot: I've heard about that you need to apply pressure on the memorycard to make contact (tried that), but broken? Just out of the blue when the Pi didn't even move?
- static electricity/mains voltage: If it was the mains voltage leaking, shouldn't the other USB devices connected to the PiHub have died as well? As for the tv, that doesn't have a grounded plug (have never seen one that does), wouldn't do any good anyway, there are no grounded wall outlets outside of the kitchen. Plus I've used the dvb-c receiver a bunch of times before, but connected to my laptop and before the Pi2 with a Pi1. No issues there.
- 3.3V/5.5V GPIO: I always check everything before connecting something to the GPIO, I know to be careful with this. Plus at the time of the malfunction, nothing was connected to the GPIO.
- damage due to falling: The RPi never fell, or moved in any other way. However, I could try to check the crystal anyway (to rule it out), but I believe the crystal needs to be de-soldered before that can be done (would have to look into that).
The most common failures are either a corrupted sd-card, or a power supply that is unable to deliver stable power.
I tried several power supplies that deliver more than 2 amps and since the microSD cards I tried work in both older and newer Pi's, it seems I ruled that out too. Unless the memorycard holder got damaged without touching it.