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Any CRT experts? Decased a 32" Sony Wega Trinitron for arcade

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rCadeGaming:


--- Quote from: PL1 on February 12, 2013, 02:11:12 pm ---The only thing you couldn't undo is if you get too near the HDD or your credit cards.   :hissy:
--- End quote ---

Seriously though, how close would you need to get to do some damage?  Do you need to worry about this with a solid state hard drive?

PL1:


--- Quote from: rCadeGaming on February 12, 2013, 04:36:57 pm ---
--- Quote from: PL1 on February 12, 2013, 02:11:12 pm ---The only thing you couldn't undo is if you get too near the HDD or your credit cards.   :hissy:
--- End quote ---

Seriously though, how close would you need to get to do some damage?  Do you need to worry about this with a solid state hard drive?

--- End quote ---

Not sure on SSDs -- an alternating magnetic field could theoretically induce alternating current into wires.   :dunno

I wouldn't want to bring the coil too close to the HDD and corrupt a few key 1's and 0's in the FAT or OS + have to re-load/re-tweak everything.

I figure better safe than sorry since there are too many variables involved (coil strength, mag field shape, distance to HDD, wiring layout, shielding on HDD, etc.) to say for sure with my somewhat limited experience in this area.


Scott

thatpurplestuff:

So I got my degaussing coil in the mail and ran it over the TV multiple times last night.  The TV was about 50% distorted before the degaussing coil... after the first pass I would say that only about 5-10% was left.  Second pass, third pass, I could only get the distortion down to 5% or so.  One section on the left hand side would just not clear up... it was significantly better but the color was definitely shifted a bit.

Out of frustration I start tipping the monitor forward and the distortion gets worse... tip backwards and it starts going away completely.  I start thinking for a second and I KNOW for a fact that nothing is moving inside the case, so it's gotta be reacting to outside influences.  Instead of tipping it, I start rotating it and moving it away from the back wall a bit and sure enough all distortion is gone.

I've narrowed it down to two possible things causing the distortion... there's an home A/C unit outside of the house on the other side of the wall (about 6' to the left of the TV) and there's a ceiling fan in the room (about 6' above the TV).  Neither the fan nor the A/C unit were on during testing, but I'd imagine it's the A/C unit throwing things off since it seemed to get better as I moved away from the wall (and the distortion was on that side of the TV) but if any of you know for sure I'd love to hear it.

Either way I'm very optimistic about this build now since although this is the room that I plan on keeping the arcade in, I think as long as I keep it against one of the internal walls it will work fine and with my frame setup if the TV gets wonky after going in the cab I can always slide it back out for some more degaussing love.  The yoke reversal has worked perfectly and this thing is pretty much ready to be placed in a mirrored cabinet setup... I just need to build one now (and finish my Skeeball project at the same time haha).

Thanks for all the input guys!  :cheers:

sharpfork:

You are a brave person to be wresting with that honking 32"!  When you get the color issues resolved, it will be well worth the effort.   
I've wrestled a couple 27" CRTs and a 25" for my tate cab and I can say that without a doubt the Sony TVs have the most annoying complex internals.  Your solution for the box is really nice, especially when one considers the weight of the thing and the necessity of having two folks move it around.
Thanks to all that contributed to this thread.  I learned a couple of good tips like the bulk cassete erase and proper ways to degauss and powering sequences.
 :cheers:

mgb:

remember when using the degaussing coil, you want to start out in small tight circles close to the screen and swing out into larger circles as moving away from the screen.
the whole thing should take about 3 seconds.
usually one shot does it but it can sometimes take 2 or 3 shots.
 

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