I got a tough one. Electrical Guys Look

**Curiosity** · 10-24-2004, 01:19 AM

When the VGA chip overheats/crashes it will look and act like that, so whatever it is, I'd say it's between the LCD and PC.

**antimatter** · 10-24-2004, 01:26 AM

Originally Posted by Curiosity

When the VGA chip overheats/crashes it will look and act like that, so whatever it is, I'd say it's between the LCD and PC.

Hmmm, i am not quite sure what what you when you say it is between the LCD and the PC.

Do you mean it is possibly the LCD or some componant between the LCD and the PC i.e. cable or video card

Or

Do you mean it is either the LCD or the PC

If you mean the second option i aughta smack you with a wet noodle

becasue that sure narrows it down alot.

**frodobaggins** · 10-24-2004, 01:29 AM

noodles ? mmmm

**antimatter** · 10-24-2004, 01:32 AM

don't temp me while i am armed with wet noodles... someone is liable to get smacked

**frodobaggins** · 10-24-2004, 01:36 AM

.

**antimatter** · 10-24-2004, 01:42 AM

I have a large arsenal of different flavors/types

Beware

**frodobaggins** · 10-24-2004, 01:44 AM

Apparently this thread went wrong somewhere.

**lawrence** · 10-24-2004, 01:50 AM

As a way to check this I would mount the MB back into a metal case and then ground the case to the opus. You may have a MB that need to be grounded at more then one point. I.E. the regulator may use the screw hole near it on the MB and the pci slot may use one next to the power connector. This then will make the pci ground travel though other components to find a ground. You maybe using your MB as one high $$ capacitor. Just my guess but that’s would be my first step

**Curiosity** · 10-24-2004, 01:50 AM

Ground loop is when two things are not using the same ground, and usually you can measure volts between the two grounds. I think? Someone help me out! I've actually been shocked and blown a home theater amp from the power between house ground and the cable TV shielding. That's about the only experience I've had with ground loops. I think it can be dangerous because if the two grounds aren't the same reference, then Vcc isn't what's expected either.

**meddler** · 10-24-2004, 03:02 AM

Originally Posted by Curiosity

Ground loop is when two things are not using the same ground, and usually you can measure volts between the two grounds. I think? Someone help me out! I've actually been shocked and blown a home theater amp from the power between house ground and the cable TV shielding. That's about the only experience I've had with ground loops. I think it can be dangerous because if the two grounds aren't the same reference, then Vcc isn't what's expected either.

True, you should be able to measure the voltage between the two grounds. It may be very small and you may need a moving coil meter (old analogue meter) or an oscilloscope to see it. As far as your home amp, there is something seriously wrong there if you got a shock between the amp and the tv cable shield, sounds like there is a problem with the power supply in the amp.