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-   -   PC to HDTV issues ... (https://www.highdefforum.com/computers-htpcs/2758-pc-hdtv-issues.html)

Zombot 04-14-2008 10:19 AM

OK, I guess my problem is in the LCD itself and not in the PC or cables. I have figured out that the TV just randomly activates green and pink noise which affects both PC input and TV signal. The only exception seems to be for some reason the teletext (The black color of the teletext is perfectly black when the picture from the PC and the TV signal get affected by the greed/pink noise). Initially I thought that this noise might be triggered by heat generated in the TV but now doubt it since it comes and goes totally unpredicted. In the last two days the noise doesn’t appear as often as in the past week but it is still very unpleasant. Anyway it seems to be a problem of the TV so I will try to find the corresponding documents and see if it is still covered by warranty

bberglund30 04-20-2008 11:19 PM

DELL MONITOR TROUBLES I'm Completely Stumped...and Frusrated
I just purchased a new Dell 2208 WFP monitor, which is HDMI equipped. I then purchased a Gateway T Series Laptop with a 1270 ATI graphics card. I attempted to hook up the HDMI and I had two really weird things take place. When my computer would boot up the monitor screen would turn bright green while the (normal) color on the actual laptop was black. Then once I did get the computer up and running, I had to adjust the zoom level on the monitor so that the icons would not spill over the edge. The factory default was 10%, I had to set it to 0% and then I got 1680 with 60HZ. It really looked nice except for a few sporadic horizontal refresh lines. However, when the computer would awake from sleep it had reset itself the monitor to a 10% zoom. I guess I don't know what the problem is. Drivers, Video card, bad cable, or something else? Any help would be much appreciated. I am now using the VGA connection and I can see the monitor refreshing (its pretty ugly) Should I give up on HDMI, or is there something I can do.

Thank you very much.

vl99 05-27-2008 04:43 AM

This is one problem you guys won't believe.

I have a HP Pavilion laptop running on the Intel 915GM/GMS,910GML Express Chipset and a Samsung 40" HDTV. I connected the laptop to the hdtv via a vga cable.

Guess what? Nothing appeared on the tv. No error message, nothing.

So, to confirm that there's nothing wrong with my laptop and vga cable, I hooked up to a Sony HDTV and voila, everything turned out great! And I didn't have to tweak anything. It happened auto-magically.

I connected another laptop with an Intel 945 chipset to the Samsung HDTV, again nothing appeared on the tv.

The only "good" thing I noticed was that my laptop could "detect" the HDTV because it allowed me to specify if I wanted multiple display or extended desktop mode.

Does anyone know if there is a compatibility issue between Intel graphics chipset with Samsung HDTVs?

Frankly at the stage I'm in, I'd rather have overscan and low resolution problems than no picture at all.

Any help here would be great!

newbieppc 07-04-2008 04:10 PM

I'm really wonder about the Samsung HDTV, my coming TV.

I'm using Vaio SZ660N/C (with similar componenst with your lappy). I connect the lappy with LCD-Samsung R7 via S-video port. It worked good.

Now, I'm setting up a new HTPC (with confuse on AMD or Interl, ATI or Geforce). I ordered Samsung F81 40" (HDTV) for my HT. I will post the review and result of test on this thread for your reference.

I'm newbie. Hello everybody! :D

newbieppc 07-04-2008 04:15 PM

Should you check the VGA card on your lappy and the "another laptop"? I think onboard Intel VGA card is not work properly with HD

HDMI seems to be not good for connection PC with HDTV.
We should try to use DIV port, in my opinion(!).

MarkWatson 09-03-2008 01:11 PM

I would also like to thank all of you, because your information did also help me!


majucamex 10-15-2008 07:33 PM

Help VGA pc to HDTV
Hi all, I have lost the hair still I had and not be able yet to see my pc screen in my Tv. I send you the details hoping some one help me.

TV set

HDMI Input
This TV accepts 480i / 480p / 720p / 1080i video signals and 32kHz / 44.1kHz / 48kHz audio signals.

I have seen images from open TV (Antenna) in 480i and movies (DVD player) in 1080i using the HDMI


Acer Aspire 5100
Graphics Card ATI Radeon Xpress 1100
VGA output only

Regular LCD external monitor: Image seen?, Yes no special configurations.

HDTV used as external monitor: Image seen?, Yes using a VGA to HDI converter, I can see the image in the TV but just when windows XP or vista is booting up, after the image is lost.

Graphics Card Main monitor Resolutions supported:
Highest: 2048 X1536
Lowest: 800 x 600

60,75 and 100 Hz

Any solution?

Thanks a lot.

rbinck 10-15-2008 08:29 PM

Probably after the boot up the resolution is getting changed to a resolution that is not a HDTV resolution. If your HDTV does not have a PC (VGA) input then it probably requires a HDTV resolution. That would be 480i, 480p, 720p or 1080i and maybe 1080p on some HDTVs through the HDMI port.

I would change the resolution on the computer to 640x480 at 60 Hz to see if that works after bootup. If that works then you can try other resolutions, otherwise you may have an incompatable computer or HDTV.

tipstir 10-21-2008 09:37 PM

It's 800x600 at 60Hz don't go to 640x480.. Best way to do all of this is to make sure the:

HDTV has VGA port
VGA port on the laptop
Make sure that the laptop LCD is showing what you want to see on the HDTV VGA. Use the Function key to switch views. So you only go it on the HDTV. Those HDTV that just don't have VGA you could use S-Video at 1024x768 60Hz.

Better to use a HDTV VGA Port as that is designed to work as a computer monitor also.

pokerwoody 10-28-2008 09:07 PM

invalid signal...
Hello.... I searched the forum and could not find any posted info to help my problem... I have a sharp lc-52sb55u with a vga port. I had a dell with xp that you connect without issue. I now have an acer with vista and keep getting invalid signal. This laptop will work on a Mitsubishi dlp with no issue but the sharp invalid signal no matter what i set res at. I downloaded powerstrip and tried saving res settings without any luck. with the sharp lcd the second i connect the vega cable to pc, pc screen blanks and tv goes to invalid signal. even with power off the tv pc monitor goes blank second i plug cable into pc as long as other end is plug into the tv. do not have the issue with dlp.
Any suggestions are appreciated.

planebuf 11-12-2008 09:29 AM


I have recently purchased a Sony Bravia KDL-32L4000. I connected it to my computer through a DVI-D to HDMI cable. I managed to fix the overscan problems with the nVIDIA control panel but now when my computer restarts due to automatic updates and what not the screen shows the BIOS set up and then it just goes blank. However, if i connect my LG LCD monitor first then start the computer and then proceed to connect to the HDTV it works
Does anyone know how to fix this cuz its getting annoying

alonr 12-11-2008 01:42 PM

Hello guy,
im having this problam for a long time and dont know what to do anymore..

I have HDTV toshiba (32av500) and a new pc with GeForce 9800 GT.

i have connact my pc to the HDTV from the VGA to the HDMI conction.

i CAN see the monitor screen but evry few min (rendom time) im getting black screen.

the PC is fine 100% - i chackd it on ather HDTV
the HDTV fine 100% - i chackd ather HD prodacts on it

im useing 720p hd format.

if someone know how to fix it please help me.

pizz 12-13-2008 01:47 PM

I'm having the same problem
Phillips 32PFL7803D/10

graphic card
Zotac GTX 260 Amp2

I am using a HDMI/DVI connection

the setup seems right, I have a PC screen, resolution is native 1920x1080 60Hz

but as soon as I start watching movies in fullscreen or switch to a 3D
enviroment szch as a computer game I keep getting that black screen with "NO VIDEO INPUT" or "NOT SUPPRTED FORMAT"
every couple of seconds, it's really anoying

rbinck 12-13-2008 07:23 PM

I had that problem with one of my video cards. Installing a small fan to help cool the video card fixed the problem.

pizz 12-14-2008 06:40 AM

definitly not a heat issue, card barely goes over 60-65C on full load

i updated tv-s firmware but that didn't solve it...

maybe i should buy a much more expensive HDMI cable for PC connection, cause the one I'm using to connect my Digital TV box is working fine...

I am waiting for a reply from Phillips, to see what they have to say...
They do insist on connecting a separate AUDIO cable because DVI/HDMI cant carry the sound. I can't see how can this affect the video issue.

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