Mats higher than high pitched noise

jay

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I got a good chassis for my Pole Position Mats. I did the swap tonight and fired it up. Nothing is connected to the monitor except for the ISO.

Upon firing it up I got neck glow and a nice white screen. However, I am getting an extremely high pitched noise from it. It's hard to explain, It's not audible in a sense it's like what tinitis is like. The highest frequency noise you can think of rattling the inside of your brain.

If I walk around the cab it changes intensity. I brought my wife out into the garage to take a listen and to see if I wasn't hearing things. When I fired it up she plugged her ears and immediately when back in the house.

She described it as a dog whistle. After I laughed my ass off for a minute, I got concerned. What the hell is it???
 
Have you tried tweaking the horizontal freq/hold? That's pretty common for it to make a high pitched squeal when the frequency is out of adjustment, especially with no signal connected.

DogP
 
Is it bad to fire monitors up without anything connected? I just wanted to make sure it worked before I continued the rest of the process.

Another question: If I decide to forgo the video cable from ultimarc (video amp cable) and figure out the vga pinouts from the agp video card on my own, what do the colors from a PP mean/correspond to? AND what should I set the video card to before I try and fire it connected? Can I do that without some type of adapter?
 
It's not bad to turn it on without anything connected, but it is bad to run the sync way out of normal range. If that's what's causing the squeal, you should tweak that pot back to where it sounds normal. There's other things that can cause squeal, but the sync is the most common one... especially if it's really deafening.

Sorry, I don't know about your other question... if you look at the manual, sometimes it tells you wire colors, or you could trace back to a harness if it's still connected, and compare to the pinout.

DogP
 
The noise is so high in frequency, I doubt the camera's mic would pick it up. It's hard to describe, it's more like a ringing in the ears than a noise. I'm hoping I'm not being blasted by X-rays.
 
Yep... I know the sound. I'd try the toothpick trick.

DogP
 
Toothpick trick didn't work. Time to email Bob for a new flyback and see if that works.
 
Try poking different components/brackets around the flyback with a plastic-something while it is on and see if you can get it to change.
 
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