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HTPC Problem with TV

post #1 of 7
Thread Starter 
Hey guys,

I got the BIOSTAR TA75M+RCH + AMD A8-3850 for my HTPC build and it works fine with a regular monitor, but the second I connect it to my 42 inch LCD it bugs out. Sometimes it won't receive any signal to the TV and other times the picture is fine, but no sound or the picture will act like it's on a monitor and a small resolution.

I tried messing around in AMD's catalyst controller and I updated the drivers and chipset, but nothing is working. Not sure where to turn to since there isn't a lot when I google it. Any suggestions? Thanks!
post #2 of 7
Quote:
Originally Posted by Wr3ckin_Cr3w View Post
Hey guys,

I got the BIOSTAR TA75M+RCH + AMD A8-3850 for my HTPC build and it works fine with a regular monitor, but the second I connect it to my 42 inch LCD it bugs out. Sometimes it won't receive any signal to the TV and other times the picture is fine, but no sound or the picture will act like it's on a monitor and a small resolution.

I tried messing around in AMD's catalyst controller and I updated the drivers and chipset, but nothing is working. Not sure where to turn to since there isn't a lot when I google it. Any suggestions? Thanks!
It may be a BIOS problem. Try contacting the motherboard manufacturer for some help.

What happens if you turn on the PC with both monitor and TV connected ? Can you make either / both work ? What about only connecting the TV and then turning on the PC ?

As to the no sound... that reminds me when I had a Radeon HD4670 in my HTPC, sometimes when I switched the TV between TV mode (and watched TV for a while) and HDMI input, I would lose the sound and only a reboot would fix it. Everything was fine on the software side (I think, at least I checked what I could think of). I then put in my Geforce GTX 460 1GB (was the card in my main rig before) in the HTPC and never had that problem again.

As to the image being smaller, that is a scaling problem. There is a feature in AMD's Catalyst Control panel, where you can adjust the scaling so that the image fits your screen. Nvidia also has a similar feature, but it works a little differently, with a wizard, which then sets up a custom resolution. This is related to how some TV's display images through HDMI, that's why GPU drivers have this feature. On some TV's you can turn off that feature (called overscan) and you won't have to make any adjustments in the driver. If the TV does not have an overscan/underscan option, you can try the "Fit to screen" option.

Hope that helps!
Edited by tpi2007 - 8/8/11 at 7:14am
 
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by tpi2007 View Post
It may be a BIOS problem. Try contacting the motherboard manufacturer for some help.

What happens if you turn on the PC with both monitor and TV connected ? Can you make either / both work ? What about only connecting the TV and then turning on the PC ?

As to the no sound... that reminds me when I had a Radeon HD4670 in my HTPC, sometimes when I switched the TV between TV mode (and watched TV for a while) and HDMI input, I would lose the sound and only a reboot would fix it. Everything was fine on the software side (I think, at least I checked what I could think of). I then put in my Geforce GTX 460 1GB (was the card in my main rig before) in the HTPC and never had that problem again.

As to the image being smaller, that is a scaling problem. There is feature in AMD's Catalyst Control panel, where you can adjust the scaling so that the image fits your screen. Nvidia also has a similar feature, but it works a little differently, with a wizard, which then sets up a custom resolution. This is related to how some TV's display images through HDMI, that's why GPU drivers have this feature. On some TV's you can turn off that feature (called overscan) and you won't have to make any adjustments in the driver tough.

Hope that helps!
Thanks for the replay!

Frustrating scenario with extending my desktop with both the monitor and TV: DVI monitor has to be plugged in first before the HDMI or it won't work. Once I plug in the HDMI after the DVI is plugged in then I can take out the DVI, but the computer sees my TV as the monitor. If I hit "Detect" monitors then everything blacks out and I have to reboot.

Connecting only the TV and booting up the HTPC is a crapshoot. Sometimes the screen pops up and the more numerous times it doesn't show up at all. I'll have to contact BioStar
post #4 of 7
Quote:
Originally Posted by Wr3ckin_Cr3w View Post
Thanks for the replay!

Frustrating scenario with extending my desktop with both the monitor and TV: DVI monitor has to be plugged in first before the HDMI or it won't work. Once I plug in the HDMI after the DVI is plugged in then I can take out the DVI, but the computer sees my TV as the monitor. If I hit "Detect" monitors then everything blacks out and I have to reboot.

Connecting only the TV and booting up the HTPC is a crapshoot. Sometimes the screen pops up and the more numerous times it doesn't show up at all. I'll have to contact BioStar

You're welcome!

Oh, I just remembered one last thing, not sure if it applies in your case, but anyway: have you checked if the HDMI cable is properly connected to the motherboard ? I'm saying this because when I first connected the HDMI cable, the TV would not recognize the HTPC. Turns out, the cable connector had too much plastic around it for the small space it had to fit in, and a little difference didn't let it connect properly all the way in (altough it seemed fine at first). I had to remove bits of plastic so it would fit properly.

I guess that given your HDMI output is in the motherboard I/O panel, it shouldn't have such a cramped location as my discreete GPU had, but anyway, it's worth checking- it may be that the I/O panel has a slight outward curvature and the HDMI port is futher behind and is not letting the HDMI cable make full contact.
 
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post #5 of 7
Thread Starter 
Yeah, HDMI is snug and there isn't any new drivers/BIOs as the APU and mobo is fairly new. I'll look again, but there wasn't anything I could download from Biostar & AMD. This is really confusing me. 4 weeks and I really haven't been able to use it.
post #6 of 7
In what order do you power up? Have you tried another cable?
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Got Cheap?
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Phenom II 965 Asrock 870 Extreme3 Sapphire 6850 sniper 2x4gb DDR3 1600 
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KeyboardPowerCaseMouse
KA-558 Antec TP-750 NZXT Gamma MX518 
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Athlon II x4 620 ASUS M3A78-EM 5450 G.Skil 2x2gb DDR3 1600 
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Western Digital Blue 500gb none Windows 7 x64 46" lcd 
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post #7 of 7
I have a A* 3850 as well with a Asus F1a75-v PRO motherboard my problem is that it will display through hdmi on my 42 inch led LG its that it takes 30 secs from the time i hit the power button to where it will show the Asus Bios bootscreen so 30s the computer acts like it does nothing says no source so on then bam 30 secs later screen pops up and boots normal why is there such a delay on power up
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