HDMI on/off switch? - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 19th December 2010, 01:14 AM   #1
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Default HDMI on/off switch?

Does anyone know if such a thing as single-input/single-output HDMI on/off switch exists?

I have a digital cable box that disables the analog video outputs when the HDMI port is connected to a device. When I want to use the analog video output I have to manually unplug the HDMI cable, which is a bit inconvenient.

I'm sure some kind of multi-way HDMI switch could be used, but I would like to use that option as a last resort.

~Thanks
  Reply With Quote
Old 19th December 2010, 02:21 AM   #2
wwenze is offline wwenze  Singapore
diyAudio Member
 
Join Date: Mar 2008
Does it work if you switch the HDMI-in device off?
  Reply With Quote
Old 19th December 2010, 05:28 AM   #3
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Quote:
Originally Posted by wwenze View Post
Does it work if you switch the HDMI-in device off?
No, unfortunately.
  Reply With Quote
Old 19th December 2010, 05:48 AM   #4
wwenze is offline wwenze  Singapore
diyAudio Member
 
Join Date: Mar 2008
Does the analogue video out happen to be at a lower resolution than the HDMI out? If so have you tried if switching to the lower resolution manually allow the analogue out to come on?
  Reply With Quote
Old 19th December 2010, 08:56 AM   #5
Enzo is offline Enzo  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Lansing, Michigan
Isolate the problem. Is the thing responding to somethiing electricic at the other end of the cable? Or is it something about the physical plugging in of the connector? Similar in a sense to a boom box whose AC power cord socket has a switch to disconnect the battery circuit.

I don't know about an ON/OFF switch, but if you had an A/B switch, use that and just leave B unused. Then A is On and B is Off.
  Reply With Quote
Old 19th December 2010, 06:10 PM   #6
diyAudio Member
 
Steerpike's Avatar
 
Join Date: Jan 2006
Location: Johannesburg, South Africa
The HDMI sink device (TV set) should put +5V on the 'hotplug' line to show that it is present. The set-top box is probably using the presence of that +5V to decide that it will no longer put out analogue.
Whether anyone makes a ready-made box to interrupt that signal I have no clue.

Switching off a TV set doesn't really switch off a lot of the cirrcuity in it - which remains active even in standby mode. Unplugging the TV set from the wall should kill its ability to steer the hot-plug HDMI signal.
__________________
Steerpike's Toybox
  Reply With Quote
Old 19th December 2010, 06:26 PM   #7
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Quote:
Originally Posted by Steerpike View Post
The HDMI sink device (TV set) should put +5V on the 'hotplug' line to show that it is present. The set-top box is probably using the presence of that +5V to decide that it will no longer put out analogue.
Whether anyone makes a ready-made box to interrupt that signal I have no clue.

Switching off a TV set doesn't really switch off a lot of the cirrcuity in it - which remains active even in standby mode. Unplugging the TV set from the wall should kill its ability to steer the hot-plug HDMI signal.
Exactly, the cable box still knows the HDMI is connected even when the TV is off (standby). Maybe I can just get a small manual AC power switch for the TV. It doesn't seem to upset any of the setting when it gets unplugged.

I think this might all be moot now anyway. The HDMI inputs on the TV seem to have gone dead for some reason. Analog, component, and PC all work, but neither HDMI work now. I connected a PC to the TV (VGA input) for the first time yesterday and that's when they stopped working.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
HDMI and digital out ackcheng Digital Source 18 12th November 2011 06:26 PM
Laptop HDMI Output and DAC HDMI I2S Input. Can I get this going? mikone Digital Source 1 8th September 2010 12:36 AM
1.4 HDMI Question ErikJackson Parts 3 26th June 2010 08:06 AM
HDMI and DCX2496 weinstro Digital Line Level 0 19th March 2009 04:45 AM
HDMI and HDCD percy Digital Source 6 19th February 2005 11:02 PM


New To Site? Need Help?

All times are GMT. The time now is 01:48 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2