[mythtv-users] 2 PVR-150 Cards Causing Trouble

[David Watkins]

On 25/07/05, mythtv at cxdonline.com <mythtv at cxdonline.com> wrote:
> Hello all,
> 
> I am having trouble with a 64 bit athlon 3000+ on a Gigabyte GA-K8N mobo
> with PCIexpress. It has a nvidia 6600 PCIe, 1GB of RAM, and SATA1 200 GB.
> 
> It boots and runs fine with one PVR-150 installed. When I install the
> second PVR-150, it will boot if it is cold. When I try a reboot, it will
> not boot. Not even a POST. Later, I come back and it boots. When it does
> boot, both cards work fine, sound and everything, even IR.
> 
> The heat-sink on the processor seems cool to the touch, and no smoke has
> come out yet.
> 
> I have tried every combination of the three PCI slots for these two cards.
> I have increased the RAM DDR voltage by .2 volts, I have checked voltage
> at boot, starts at 12 and for a second goes to 11 and then back steady at
> 12.

Are you seeing this voltage on a scope or on a multi-meter?  Meters
probably don't respond fast enough to give an accurate value.  The
voltage may go lower than the value you see.

> 
> The PSU is a Ahanix MPT-350D and has an AMD sticker on it. It says 15 amps
> on the 12 volt rail, 30 amps on the 5 volt rail, and 14 amps on 3.3v.
> 

The 64 Bit Athlons are reportedly greedy at 12V, I've seen 18A
recommended.  Does your motherboard have the additional 12V PSU
connection, and are you using it?

> Like I said, it boots and runs perfectly with one capture card.
> 
> I had two HDDs in it for a while and it did fine. Does a capture card draw
> that many amps?

They get pretty warm so I guess they draw an Amp or two each.