I have a problem with my Raspberry Pi. When I plug in the power, the device fails to power on. The
POWER LED turns on, but nothing else happens. My display still says No signal, the
OK LED does not turn on or blink and network LEDs stay unlit even though the cable is inserted.
Basically, the symptoms are the same as if I tried to turn the Raspberry Pi on without an SD card inserted. I last used a Raspberry Pi a week or so ago and it worked fine. I've checked if the SD card has maybe died and it is working fine on my computer. I've tried reflashing it with a fresh Arch image but still nothing.
The power supply and the USB cable are almost certainly adequate (5.0V with my multimeter between TP1 and TP2 and I've never had any problems even when running intensive computation and having external USB devices attached)
The funny thing is... if I hold the PCB and the SD card together with two fingers, the Raspberry Pi DOES turn on, but the boot process freezes (no kernel panic or anything, just hang) when I release it.
What could be the cause of this problem? Is it more likely that the SD card is indeed faulty or is there a problem in the Raspberry Pi itself?