Hardware HDMI issue after connection to faulty PSU - Raspberry Pi Forums

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hi,

few months ago connected pi 2b faulty power supply, received on 6v onto gpio few hours.

pi has since continued work me in areas; usb , ethernet work fine general use of pi via remote desktop/ssh.

hdmi port causes problems...
firstly, when pi powered desktop pc can connect pi monitor , display works.
when pi powered other device the monitor powers off (screen goes black, power/standby light goes out)
monitor has green light on, orange standby
list of other devices includes: power 2 different phone chargers, power battery powered phone charger, power desk power supply set 5v.

connecting pi monitor without powering pi allows monitor function expected (i.e. sits in standby mode)
power applied pi monitor powers off completely. tried dialling voltage applied pi down , found there point

2 other pi-s work fine of these other power supplies monitor.
monitor works fine 3 different graphics card.

suggestions on have been damaged , why might not problem when powered off computer?

a



raspberrypi



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