G’day, new user here. Sorry my first post is about a problem.
Received my U4 on Christmas eve and have been loving it. It’s been brilliant except I’m getting a loud buzzing sound. It’s not high pitched and I’m on the latest firmware but I still think it’s the same kind of problem as others here because
- stopping the fan with my finger has no effect
- unplugging the fan stops the buzzing noise completely
I’ve tried
- Adjusting the fan speed - higher speeds make the buzz louder
- Reinstalled latest firmware
- echo >/proc/stb/fp/fan_pwm ff command - no effect other than increasing fan speed to maximum
Would like to try a capacitor, as peteru recommended, if someone can advise a precise model and give some tips on how to install.
On a probably unrelated question, is it normal for the HDMI out to stay active in standby and deep standby?
My receiver never stops reporting an active connection unless I completely switch off the U4’s power.
What’s really strange is if the U4 is in standby and I switch my receiver off & on, or switch the input & then back again (fresh HDMI handshake), my TV will start to receive an actual video signal. It’s just a black screen but if I push buttons on the U4 remote the “no action” symbol (square with a diagonal line through it) will display on screen.
Would really prefer not to have to post the U4 back for repairs so any advise would be much appreciated.