USB TV Tuner not working when overclocking

[monographix]

I have this USB stick Hybrid TV Tuner that is identified in windows 7 (64) as

- "ATi Unified AV Stream Driver" (in Device Manager Sound and Media devices)
- "ATi Unified AV Stream (T550 Pro) Driver" (in ATi Catalyst Control Center information. If that line refers to this USB TV tuner ofcourse)
- "Cali TV Card" (in USB removable devices or in Device Manager without driver installation)
- Driver provided by "Compro Technlogies Inc." (In Device Manager driver details. Driver installed by windows)
- Hardware ID : USB\VID_0438&PID_AC14 (in Device Manager device properties)

And the issue is that when the pc is overclocked, the tuner stutters, freezes and quits working. I am suspecting it has particularly to do with the Bus Speed (BClock), when its over 133 MHz the tuner crashes. ( same behavior with both TV viewing software i have used )

How and what could possibly about the bus speed affects the USB tuner that way and is there a workaround or fix about this ? (everything else USB related works fine, as all other devices too)

Is that something common with all usb tv tuners maybe?

.

 

[markok]

I have this USB stick Hybrid TV Tuner that is identified in windows 7 (64) as

- "ATi Unified AV Stream Driver" (in Device Manager Sound and Media devices)
- "ATi Unified AV Stream (T550 Pro) Driver" (in ATi Catalyst Control Center information. If that line refers to this USB TV tuner ofcourse)
- "Cali TV Card" (in USB removable devices or in Device Manager without driver installation)
- Driver provided by "Compro Technlogies Inc." (In Device Manager driver details. Driver installed by windows)
- Hardware ID : USB\VID_0438&PID_AC14 (in Device Manager device properties)

And the issue is that when the pc is overclocked, the tuner stutters, freezes and quits working. I am suspecting it has particularly to do with the Bus Speed (BClock), when its over 133 MHz the tuner crashes. ( same behavior with both TV viewing software i have used )

How and what could possibly about the bus speed affects the USB tuner that way and is there a workaround or fix about this ? (everything else USB related works fine, as all other devices too)

Is that something common with all usb tv tuners maybe?

.

Having a similar issue right now with a factory set clock. The tuner is not getting enough juice to process the signal and with WinTV it stutters with MMC it just drops the signal. Using it on a laptop and the only way to get it to work is to reduce the power output to the rest of the system, ie CPU at 25%, DVD drive disabled , screen dimmed.

So it may be a bus issue or it could very well be that it is not getting enough power.

 

[wirednuts]

does your power supply have balls? overclocking likes balls.

 

[Binky]

Use a powered USB hub to eliminate the possibility that the USB tuner just isn't getting enough power.

 

[markok]

For me that is even worse.

On a full tower, plugging my WinTV HVR 950Q directly into the onboard USB works like a charm, so does any USB port running directly off of the motherboard.

If I plug it into a USB 2.0 AC powered hub the thing flips me the bird.

The only thing that I can put between the tuner and the USB port is a short extension cable provided by Hauppage. If I use anything else the bird flipping kicks in. The extension cord is thicker and has more shielding than any other USB 2.0 cord I have seen.

 

[mindless1]

And the issue is that when the pc is overclocked, the tuner stutters, freezes and quits working. I am suspecting it has particularly to do with the Bus Speed (BClock), when its over 133 MHz the tuner crashes. ( same behavior with both TV viewing software i have used )

How and what could possibly about the bus speed affects the USB tuner that way and is there a workaround or fix about this ?

.

yes the workaround is don't overclock BClock.

Seriously, overclocking by changing bus speeds always had the potential to lock up certain components. The more complex a system the more likely you'll have problems when overclocking.

 

[monographix]

In my case i found a while ago that it was the RAM clocks that were affecting the USB Tuner. Testing an overclocking to 4GHz with 160 Bclock had the tuner working flawlessly as long as the ram is kept within factory specs (less or equal to 1600 Mhz in my case). Pushing it to 1700 for example even with adequate Vdimm increase and lowering CL had the tuner stutter and giving up.