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Toshiba PF D29C051 15khz whine extremely loud

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BlastRugi

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Does anyone here have a New Net City? My NNC's 15khz mode is SUPER loud (the normal 15khz whine thing) and I am wondering if that is normal for them
As in, if I have both my blast and NNC in 15khz mode, the NNC is almost ear splitting while the blast is fairly ignorable

The picture looks fine, 31khz is phenomenal, but it is genuinely just the classic CRT high pitched sound is horrible
 
A whistle is usually a component that is vibrating. Immobilizing it will make the whistle stop, allowing you to identify it.

Try removing it and resoldering it. Replace it if you can. If that component does not heat up, try immobilizing it with hot glue, or by stick a piece of carboard under it.
 
Fredo said:
A whistle is usually a component that is vibrating. Immobilizing it will make the whistle stop, allowing you to identify it.

Try removing it and resoldering it. Replace it if you can. If that component does not heat up, try immobilizing it with hot glue, or by stick a piece of carboard under it.
Click to expand...
thought it wasn't too bad since it generally is only at 15khz for a couple seconds before booting the naomi at 31khz, but after working on it for about 30 minutes I realized how bad it is. It's been about 10 minutes since working on it and my ears are still ringing and it hurts a bit!! I put horizontal and verticle pressure on just about every component, and there was no change. When I pressed horizontally on the flyback, an terrible whistle occurred then went away after I released. Still didn't change the noise. Are there any common components that cause this that I should look for? I even tried the wires I also tried to upload a video for the sound, but the file is too big for this form. And all the online sites (YouTube, imgur, etc) compress the video and cut off the 15khz frequency
 
I have a PF chassis that also did this, and removing and re-soldering the flyback took care of it.
In my case, I was able to pinpoint the noise by applying pressure to the flyback to make the noise come and go, so if doing that doesn't change anything you might have to look elsewhere..
 
adgenet said:
I have a PF chassis that also did this, and removing and re-soldering the flyback took care of it.
In my case, I was able to pinpoint the noise by applying pressure to the flyback to make the noise come and go, so if doing that doesn't change anything you might have to look elsewhere..
Click to expand...
Thanks for the help! Unfortunately after I removed and resoldered the flyback, it still makes that horrible whine. It now also has a noticeable amount of interference on the screen, and there is an additional whine coming from it now. I figure that it is likely those same joints so I will follow back up on them a bit later
 
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