Samsung forum

General discussion

46C750 TV - MacBook HDMI connection problem

by lucagatto / September 26, 2010 8:37 PM PDT

Hello.
I have a big problem connecting my macbook4,1 (the one with miniDVI out) to my new LE46C750 Samsung TV.

I use a mini-DVI-->DVI adapter and a DVI-HDMI cable.
According to the TV manual I have to connect the mac to the HDMI1/DVI port on the TV. With this setup I get a completely disturbed, noisy, shaking, purple image. I tried renaming the HDMI1/DVI to PC, to PC DVI, changing macbook resolution (from 480p to 1080p, all frequencies, overscan and so on). No way.

If I connect the mac in the same way but on any other HDMI port, after setting game mode, 1:1 pixel mapping and activating the overscan function on the computer I get a perfect 1080p image.
The only problem with this setup is that I don't have audio, since the analog mini-jack going from the mac to the TV is used only with the HDMI1 port.

I verified that HDMI1/DVI port works properly with other devices, such as BluRay players, WD TV and so on. Cable and adapters are OK, verified on other devices.
I really can't figure out what different setting HDMI1/DVI port has in respect to the other HDMIs.

Can anyone help me out?
Thanks in advance,
Luca

Discussion is locked
You are posting a reply to: 46C750 TV - MacBook HDMI connection problem
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: 46C750 TV - MacBook HDMI connection problem
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
46C750 TV - MacBook HDMI connection problem
by Samsung_HD_Tech Samsung staff / September 27, 2010 1:50 PM PDT

lucagatto,

Try attaching it the first way again, through the HDMI port and re-naming the inputs, but turning the overscan to 0%.

That's all I've got.

--HDTech

Collapse -
It was the HDMI port!
by lucagatto / September 27, 2010 4:46 PM PDT

Thanks for your reply.
Anyway I realized it's a mechanical problem of the HDMI1 connector with my cable. While in the other HDMI ports the cable is firm and doesn't move, in HDMI1 it can move a little, and give these problems. I solved the problem with some tape to keep the cable firm in the right position.

Collapse -
It was the HDMI port!
by Samsung_HD_Tech Samsung staff / September 27, 2010 5:52 PM PDT
In reply to: It was the HDMI port!

lucagatto,

I'm glad you noticed that. I have to admit, I'd probably not ever have guessed that. Kudos to your keen eye and observation.

Wiggling cords. Not in a million years would I have called that. Happy

--HDTech

Popular Forums
icon
Computer Newbies 10,686 discussions
icon
Computer Help 54,365 discussions
icon
Laptops 21,181 discussions
icon
Networking & Wireless 16,313 discussions
icon
Phones 17,137 discussions
icon
Security 31,287 discussions
icon
TVs & Home Theaters 22,101 discussions
icon
Windows 7 8,164 discussions
icon
Windows 10 2,657 discussions

CNET FORUMS TOP DISCUSSION

Help, my PC with Windows 10 won't shut down properly

Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?