Re: monitor degaussing

Your nice mostly metal conversion van makes a great magnetic shield.

Had a nearby lightening hit make a dozen games into techicolor
nightmares, but in the middle of it all was a Satan's Hollow that was
unaffected. Seems to me Electrohome used to use tubes in some of their
monitors that had internal magnetic shielding. Don't remember the tube
number, but would bet that game had one of those tubes.

Guess the only thing to do now is put a game into your conversion van,
degauss it, then try turning it and see is my "van make good shielding"
theory holds any water.

Mark E Davidson wrote:

> This brings up an interesting question I had the past 5000 miles to
> ponder as I have just returned from a "drive all over the planet"
> vacation. My conversion van has a standard "tube" monitor in it...
> How, come I can drive all over creation with it, and never have a
> degaussing problem, but when I move an arcade game across the room it
> becomes a mess? What is different in a newer TV vs a newer monitor (be
> it vector or raster)
>
> And why degauss off? My electronics teacher taught us to do it on
>
> -=Mark=-
>
> Rodger Boots wrote:
>
>> Bret Pehrson wrote:
>>
>>>>also what the best procedure is. What I saw him do was a
>>>>circular motion gradually backing away from the machine.
>>>>
>>>>
>>>
>>>Yep, that's it -- back away about 6 feet if you can.
>>>
>>>Do the procedure w/ the monitor OFF.
>>>
>>>
>>
>> Monitor off doesn't matter too much (after all the built-in degauss
>> obviously runs with the monitor on). It's way more fun to degauss
>> with the monitor on.
>>
>> Doesn't matter if there are a lot of games in the room as long as you
>> can get over 6 feet from all of them when you turn off the coil. If
>> you can't get that far back another option is to plug the coil into a
>> Variac (variable transformer) and slowly turn down the power (no less
>> than 5 seconds from full to off).
>>
>> UNPLUG THE COIL WHEN NOT USING IT! Most coils have momentary
>> switches, but I've seen some that could be left on. A coil left on
>> will get seriously hot and self destruct, possibly causing a fire.
>>
>> I never really thought about it before, but degaussing a game that
>> uses tape cartridges for sound, tape for the program (the old Deco
>> cassette system), or hard drives or floppy drives could be seriously
>> damaged by a powerful degaussing. The built-in degaussing isn't a
>> threat (not that strong and doesn't wander around the room).
>>
>> Also, take off your watch, especially modern watches with analog
>> faces. One tech at my Real Job always had to reset his after a
>> degauss because the hands would spin at high speed when the coil was on.
>>
>>
>>>Also, I've had a case or two where the monitor metal frame had become
>>>magnetized. In this case, I 'degaussed' the sides of the frame, then
>>>degaussed the CRT using the normal procedure.
>>>
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: owner-vectorlist@vectorlist.org
>>>>[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Mike Ellingson
>>>>Sent: Tuesday, August 12, 2003 5:19 PM
>>>>To: vectorlist@vectorlist.org
>>>>Subject: VECTOR: monitor degaussing
>>>>
>>>>
>>>>Thanks for all the advice. I have seen this done when I
>>>>picked up my very first machine from an op. He had it in the
>>>>middle of the room, but I have 13 machines crammed into my
>>>>basement and was wondering if they should be isolated and
>>>>also what the best procedure is. What I saw him do was a
>>>>circular motion gradually backing away from the machine.
>>>>Thanks again, Mike
>>>>
>>>>
>>>>
>>>
>>>

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Received on Fri Aug 15 04:35:48 2003