mhl to Hdmi

sirog · 09-06-2012, 07:06

Hi
I have a LG 32lg3000 tv which i have had for three years. I have purchased a mhl to Hdmi adaptor to connect my galaxy s2. it does not work at all. I have the micro usb charger connected to the adaptor and tried rebooting the phone but tv just shows screensaver saying invalid input. Before i send the lead back I thought I would try on a cheap digihome tv and it works perfectly. does anyone know why it does not work on my LG and does anyone have any solution.

captainkremmen · 09-06-2012, 09:41

Quote:

Originally Posted by sirog

Hi
I have a LG 32lg3000 tv which i have had for three years. I have purchased a mhl to Hdmi adaptor to connect my galaxy s2. it does not work at all. I have the micro usb charger connected to the adaptor and tried rebooting the phone but tv just shows screensaver saying invalid input. Before i send the lead back I thought I would try on a cheap digihome tv and it works perfectly. does anyone know why it does not work on my LG and does anyone have any solution.

Check the maximum resolution your TV can handle. Is your LG TV full HD or HD Ready?. If it is HD Ready set the output from your S2 to 720p. It could be even though the Digihome is cheap and cheerful, it supports full HD whereas the LG does not.

sirog · 09-06-2012, 09:45

Thanks for that. can not find any tv output menu on the S2.

sirog · 09-06-2012, 09:47

LG is hd ready not full hd and digihome is hd ready

sirog · 09-06-2012, 13:37

could it be that the LG Hdmi output is not compatible because it is three years old ? not an expert but puzzled why it does not work

captainkremmen · 09-06-2012, 16:31

Quote:

Originally Posted by sirog

could it be that the LG Hdmi output is not compatible because it is three years old ? not an expert but puzzled why it does not work

Wouldn't have thought so. Being three years old the LG may not be compatible with the latest HDMI standard of 1.4, but all that means is it wont support the latest features such as 3D, ethernet over HDMI, some enhancements to the colour space, real time signalling enabling source devices to optimize TV settings and audio return path to an amplifier, it should still accept audio/video via HDMI even if the source device and cable support the newer standards. Just in case though, are there any settings you can find on the S2 to alter things?, Turn off any enhancements for example?.

chrisjr · 09-06-2012, 16:42

The LG HDMI inputs (not outputs

) are ver 1.3. The latest version of HDMI is 1.4 which has only recently been introduced. I would very much doubt the the device you have or the phone are HDMI 1.4. And in any case HDMI 1.4 devices should be backwards compatible with HDMI 1.3 anyway. So very unlikely to be the HDMI version.

It could be something like the handshaking between the device and TV is failing for some reason. Or the HDCP copy protection is kicking in and preventing a connection. Always possible the Digihome TV doesn't apply the spec in the same way as the LG.

The LG has three HDMI ports, have you tried all three? Could just be a funny with one port.

And do you have anything else with HDMI that you could plug into the LG just to prove the HDMI inputs are actually working?

sirog · 09-06-2012, 18:46

yes i have tried all 3 Hdmi ports with 3 different Hdmi leads and nothing except screensaver saying invalid input. i'm baffled.

sirog · 09-06-2012, 19:34

sorry forgot to say my dvd player and my sky + hd box both connected by Hdmi and both work fine.

LCDMAN · 09-06-2012, 21:00

Quote:

Originally Posted by sirog

yes i have tried all 3 Hdmi ports with 3 different Hdmi leads and nothing except screensaver saying invalid input. i'm baffled.

Not rocket science, message means that the TV doesn't like what the S2 is sending it - simple answer, change what the S2 is sending it (somehow - read the S2 manual & change some setting or other).

sirog · 09-06-2012, 22:05

probably not rocket science, but how come the digihome had no problems. can't see any settings on s2 that I could change

sirog · 10-06-2012, 09:48

oh well. waset of money. Tried everything can not get the adaptor to work. any final suggestions before it goes into drawer never to see daylight again

captainkremmen · 10-06-2012, 09:58

Quote:

Originally Posted by sirog

probably not rocket science, but how come the digihome had no problems. can't see any settings on s2 that I could change

As both are HD Ready it sounds like an HDMI handshaking issue or the LG doesn't like what the S2/MHL adapter is sending, more than anything else.

Sounds daft, but have you tried using one of the HDMI cables from your DVD player or Sky+ box, as you know these cables work on the LG. If you have and it's still no good then you will need to check the settings of what the S2 is sending.

The only other thing I can think of is that the USB charger plugging into the MHL adapter is somehow intermittently faulty. Try plugging a USB cable between the MHL adapter and a spare USB port to power it instead.

A quick Google suggest lots of people have problems with MHL adapters on various TVs though, but if they purchase the official one it seems to work in most cases.

sirog · 10-06-2012, 13:16

thanks will try that.

alanwarwic · 10-06-2012, 14:02

Seems it is full mirroring and will only work with a power adapter connected (or a MHL HDMI TV).

Maybe the TV will not accept that display mode. Update the TV firmware?

sirog · 10-06-2012, 16:10

have tried with power adaptor. would updated firmware make any difference?

captainkremmen · 11-06-2012, 11:09

Quote:

Originally Posted by sirog

have tried with power adaptor. would updated firmware make any difference?

It might do if the MHL adapter is sending a display mode that the TV cannot cope with, but that would be unusual unless the TV is quite old. Modern TVs (even 720p TVs) can normally accept a 1080p signal whether it's 1080p/25, 1080p/50 or 1080p/60, they just downscale to the TV's native resolution. It could be your TV doesn't accept what the adapter is sending and a firmware update may add support for it. Have a look at the LG's manual, somewhere at the back should be a few pages of specifications in which it tells you what the "Input Resolutions" it accepts are. NOTE: The input resolutions a TV accepts aren't the same as the TV's display resolution, as I said, a 720p TV will downscale higher resolutions to the TV's native one.

Have you had a look online to see what resolutions the S2 capable of sending when using an MHL adapter and see if there is any way to change that?.

sirog · 12-06-2012, 22:25

Well just to update everybody that has offered help trying to sort this. spoke to LG tech support today and the tv is not compatible with mhl . they say only 2 models are. and they are both new models.

alanwarwic · 13-06-2012, 00:22

Typical tech support telling you 'what's in the packet'.

MHL is just a conduit for HDMI + power.
I would guess the TV does not recognise the HDMI display mode it is receiving.
I assume you have tested it with another HDMI TV?

And also be aware that 3rd party adapters are very dodgy.
A genuine Samsung MHL adapter one has cured many a similar problem. Expensive at £15 though.

09-06-2012, 07:06	#1
sirog Forum Member Join Date: May 2007 Posts: 235	mhl to Hdmi Hi I have a LG 32lg3000 tv which i have had for three years. I have purchased a mhl to Hdmi adaptor to connect my galaxy s2. it does not work at all. I have the micro usb charger connected to the adaptor and tried rebooting the phone but tv just shows screensaver saying invalid input. Before i send the lead back I thought I would try on a cheap digihome tv and it works perfectly. does anyone know why it does not work on my LG and does anyone have any solution.

09-06-2012, 09:41	#2
captainkremmen Forum Member Join Date: Feb 2005 Location: DAVEVILLE, Daveshire DA1 1VE Posts: 33,621	Quote: Originally Posted by sirog Hi I have a LG 32lg3000 tv which i have had for three years. I have purchased a mhl to Hdmi adaptor to connect my galaxy s2. it does not work at all. I have the micro usb charger connected to the adaptor and tried rebooting the phone but tv just shows screensaver saying invalid input. Before i send the lead back I thought I would try on a cheap digihome tv and it works perfectly. does anyone know why it does not work on my LG and does anyone have any solution. Check the maximum resolution your TV can handle. Is your LG TV full HD or HD Ready?. If it is HD Ready set the output from your S2 to 720p. It could be even though the Digihome is cheap and cheerful, it supports full HD whereas the LG does not.

09-06-2012, 09:45	#3
sirog Forum Member Join Date: May 2007 Posts: 235	Thanks for that. can not find any tv output menu on the S2.

09-06-2012, 09:47	#4
sirog Forum Member Join Date: May 2007 Posts: 235	LG is hd ready not full hd and digihome is hd ready

09-06-2012, 13:37	#5
sirog Forum Member Join Date: May 2007 Posts: 235	could it be that the LG Hdmi output is not compatible because it is three years old ? not an expert but puzzled why it does not work

09-06-2012, 16:31	#6
captainkremmen Forum Member Join Date: Feb 2005 Location: DAVEVILLE, Daveshire DA1 1VE Posts: 33,621	Quote: Originally Posted by sirog could it be that the LG Hdmi output is not compatible because it is three years old ? not an expert but puzzled why it does not work Wouldn't have thought so. Being three years old the LG may not be compatible with the latest HDMI standard of 1.4, but all that means is it wont support the latest features such as 3D, ethernet over HDMI, some enhancements to the colour space, real time signalling enabling source devices to optimize TV settings and audio return path to an amplifier, it should still accept audio/video via HDMI even if the source device and cable support the newer standards. Just in case though, are there any settings you can find on the S2 to alter things?, Turn off any enhancements for example?.

09-06-2012, 16:42	#7
chrisjr Forum Member Join Date: May 2004 Location: Reading Posts: 27,916	The LG HDMI inputs (not outputs ) are ver 1.3. The latest version of HDMI is 1.4 which has only recently been introduced. I would very much doubt the the device you have or the phone are HDMI 1.4. And in any case HDMI 1.4 devices should be backwards compatible with HDMI 1.3 anyway. So very unlikely to be the HDMI version. It could be something like the handshaking between the device and TV is failing for some reason. Or the HDCP copy protection is kicking in and preventing a connection. Always possible the Digihome TV doesn't apply the spec in the same way as the LG. The LG has three HDMI ports, have you tried all three? Could just be a funny with one port. And do you have anything else with HDMI that you could plug into the LG just to prove the HDMI inputs are actually working?

09-06-2012, 18:46	#8
sirog Forum Member Join Date: May 2007 Posts: 235	yes i have tried all 3 Hdmi ports with 3 different Hdmi leads and nothing except screensaver saying invalid input. i'm baffled.

09-06-2012, 19:34	#9
sirog Forum Member Join Date: May 2007 Posts: 235	sorry forgot to say my dvd player and my sky + hd box both connected by Hdmi and both work fine.

09-06-2012, 21:00	#10
LCDMAN Forum Member Join Date: Dec 2005 Location: Yorkshire, God's County Posts: 5,182	Quote: Originally Posted by sirog yes i have tried all 3 Hdmi ports with 3 different Hdmi leads and nothing except screensaver saying invalid input. i'm baffled. Not rocket science, message means that the TV doesn't like what the S2 is sending it - simple answer, change what the S2 is sending it (somehow - read the S2 manual & change some setting or other).

09-06-2012, 22:05	#11
sirog Forum Member Join Date: May 2007 Posts: 235	probably not rocket science, but how come the digihome had no problems. can't see any settings on s2 that I could change

10-06-2012, 09:48	#12
sirog Forum Member Join Date: May 2007 Posts: 235	oh well. waset of money. Tried everything can not get the adaptor to work. any final suggestions before it goes into drawer never to see daylight again

10-06-2012, 09:58	#13
captainkremmen Forum Member Join Date: Feb 2005 Location: DAVEVILLE, Daveshire DA1 1VE Posts: 33,621	Quote: Originally Posted by sirog probably not rocket science, but how come the digihome had no problems. can't see any settings on s2 that I could change As both are HD Ready it sounds like an HDMI handshaking issue or the LG doesn't like what the S2/MHL adapter is sending, more than anything else. Sounds daft, but have you tried using one of the HDMI cables from your DVD player or Sky+ box, as you know these cables work on the LG. If you have and it's still no good then you will need to check the settings of what the S2 is sending. The only other thing I can think of is that the USB charger plugging into the MHL adapter is somehow intermittently faulty. Try plugging a USB cable between the MHL adapter and a spare USB port to power it instead. A quick Google suggest lots of people have problems with MHL adapters on various TVs though, but if they purchase the official one it seems to work in most cases.

10-06-2012, 13:16	#14
sirog Forum Member Join Date: May 2007 Posts: 235	thanks will try that.

10-06-2012, 14:02	#15
alanwarwic Forum Member Join Date: Oct 2003 Location: the wild world web Posts: 28,132	Seems it is full mirroring and will only work with a power adapter connected (or a MHL HDMI TV). Maybe the TV will not accept that display mode. Update the TV firmware?

10-06-2012, 16:10	#16
sirog Forum Member Join Date: May 2007 Posts: 235	have tried with power adaptor. would updated firmware make any difference?

11-06-2012, 11:09	#17
captainkremmen Forum Member Join Date: Feb 2005 Location: DAVEVILLE, Daveshire DA1 1VE Posts: 33,621	Quote: Originally Posted by sirog have tried with power adaptor. would updated firmware make any difference? It might do if the MHL adapter is sending a display mode that the TV cannot cope with, but that would be unusual unless the TV is quite old. Modern TVs (even 720p TVs) can normally accept a 1080p signal whether it's 1080p/25, 1080p/50 or 1080p/60, they just downscale to the TV's native resolution. It could be your TV doesn't accept what the adapter is sending and a firmware update may add support for it. Have a look at the LG's manual, somewhere at the back should be a few pages of specifications in which it tells you what the "Input Resolutions" it accepts are. NOTE: The input resolutions a TV accepts aren't the same as the TV's display resolution, as I said, a 720p TV will downscale higher resolutions to the TV's native one. Have you had a look online to see what resolutions the S2 capable of sending when using an MHL adapter and see if there is any way to change that?.

12-06-2012, 22:25	#18
sirog Forum Member Join Date: May 2007 Posts: 235	Well just to update everybody that has offered help trying to sort this. spoke to LG tech support today and the tv is not compatible with mhl . they say only 2 models are. and they are both new models.

13-06-2012, 00:22	#19
alanwarwic Forum Member Join Date: Oct 2003 Location: the wild world web Posts: 28,132	Typical tech support telling you 'what's in the packet'. MHL is just a conduit for HDMI + power. I would guess the TV does not recognise the HDMI display mode it is receiving. I assume you have tested it with another HDMI TV? And also be aware that 3rd party adapters are very dodgy. A genuine Samsung MHL adapter one has cured many a similar problem. Expensive at £15 though.

DS Forums

mhl to Hdmi