Is it safe to use a metal hex key for the horizontal coil?

lilmul123

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Is it safe to use a metal hex key for the horizontal coil?

I realize that you can't use the metal key while the monitor is on because of the immense heat that will be generated, but can it be used while off? I do have the plastic hex keys, but none of them are the right size for my coil. I tried the closest one to the size, and it slips because of there being not enough torque.

I am afraid of there being too much torque if I use a metal key breaking the coil, but I figure it will be okay up to some point. The coil might have seized and need to be replaced anyway. Anyone have any experience in this area?
 
you should never use one.

but if the coil appears stuck then as long as you don't mind breaking the ferrite core go for it. but have a new one ready to install if you break it.

Peace
Buffett
 
Sounds like I shouldn't even try. Got it.

It doesn't look like my plastic tools give enough torque to turn it, so it must be stuck. Are there any options for loosening the coil? Is there any place where I can buy a new one?
 
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you can try a heat gun warm the housing evenly and maybe it will give way.

most width coils are no longer made.

what chassis are you trying to adjust.

Peace
Buffett
 
The monitor is a Nanao MC2000S. I'm guessing I'm out of luck if I can't loosen it.
 
I'll get a hair dryer and see if I can get it loose, if not, it's not a huge deal. It just cuts off the very bottom of the picture not allowing me to see round info and lives (in some games). Thanks for your helps.
 
If you're serious about loosening the coil slug, you can try what I did to free one that I knew I wouldn't be able to get a replacement for:

Desolder the coil from the board.

Warm the whole thing in an oven for about a half hour or so.

Find something plastic and solid that will slip into the sleeve, right up to the coil slug. (I used a thick plastic swizzle stick, cut off flat.)

Slip the same material into the back side sleeve, again butting up to the coil slug.

Place both plastic inserts (with your coil shish kabobbed between them) between the open jaws of your bench vise, and gently close the vise.

Once you have tension on the vise, turn the coil and sleeve. Hopefully the inserts will hold the slug with enough traction to free the stuck slug.

Be careful not to pinch the vise too hard, lest you risk crushing the slug.

Think "pincer grip"

The one and only time I tried this, I got it to work.

Of course, this would only work on a coil where you have free access to both ends of the sleeve.
 
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