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Where can I read the user manual for a Realistic Model 231x tape head demagnetizer?

I have only found reference to this appliance on eBay,but none to the manual.It has a light that goes on when powered.

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The manuals don't have many things to tell. Just move the magnetiser to the head you want to demagnetise. Touch it once and then slowly move the demagnetiser away from the head. If it is far enough (more than 30 centimetre or one foot away, you can switch the demagnetiser of. that is all. Some demagnetisers work on AC, others do have a battery and make the changing magnetic field inside. I could not find the 231X, but to check if it makes a changing magnetic field you could hold it to something made of steel or iron when switching it on. You should feel some vibration. Could be 50 Hz or the ones with batteries have a higher frequency, but could be noticed.
Don't expect wonders from the demagnetiser. With the older tape heads, sound could improve after demagnetising the head, but the later models never kept remnant magnetism.

Success.

Posted on Nov 19, 2014

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My Sony TC-FX707R records and plays fine going in lett direction. When recoding and playing in right direction the levels are less than they were going left. Need insight.


clean up the heads with a cotton bud and clean or isoprop alcohol; if theres non or unacceptable difference then check for a cheap head demagnetizer on ebay or ask if your local electronics repair shop can do it for you

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Here you are Andrew. That is a blast from the past!!

Service Manual and Owner's Manual!

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Heads are dirty, need to clean & demagnetize the players Heads.
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When was the last time you ran the "head cleaning" tape in the machine? As tape collects dust and dirt - it gets deposited on the recording and playback heads. This ruins playback and recording quality. Also, since tape is magnetic - they tend to magnetize the heads, too (just like reel to reel, 8 track & cassette player / recorders). Demagnetizing them will help too. Here are links to both products:

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How do I 'erase' a tape for a Dictaphone 1710?


I used to use "bulk tape erasers" to do the job in less than a minute for standard cassette of any length, 8 track and even reel-to-reel magnetic recording tape. Otherwise, you'll need to record "silence" over the entire length of tape. That will be time consuming - but will make the next recording clearer as opposed to just recording the dictation over the old recording.

Here's a link to some I found on Google. I'm sure there are plenty of other places to check (like ebay or craigslist) too. Don't forget to demagnetize the recoding head too! There are tools for this that will dramatically improve the sound captured on the tape. Here are a few I found. Finally, physically scrubbing the head with a plain old Q-Tip dipped in denatured alcohol to loosen dirt and grime that collects on the head and anything that comes in contact with the tape itself. You can get that, here.

Doing this along with replacing old tapes (they get stretched out, scratched, and dirty) regularly will keep the audio sounding crisp and clear.

Good luck!

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Buzz during playback, but only on SOME tapes!! When i adjust tracking manually, pictures quality suffers.


Bad recording VHS or old VHS tapes,will sometimes causes this problems,because of degrading magnatic tapes.Sorry this problems,u did the fixed adjusting manual tracking,that it not fixing the problems,sorry that all u will getting that kind of quality of picture.

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1 Answer

Putting a new playback head into an audio cassette deck.


Hi PATRICK

What happened when you used the head demagnetiser tape? Did chew out the head? If you can give me the model of the deck I can make some enquiries to help you sort it out.

regards
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1 Answer

Vol problem


Here is the entire troubleshooting section from the manual.

Your problem is presumed to be a shorted speaker wire. I assume you're not getting the failure ONLY at extremely high volume levels.

Care and maintenance
Occasional care and maintenance of the unit and the software
are needed to optimize the performance of your unit.
To clean the cabinet
Use a soft and dry cloth. If the unit surfaces are extremely
dirty, use a soft cloth lightly moistened with mild detergent
solution. Do not use strong solvents such as alcohol, benzine
or thinner.
To clean the tape heads
Dirty tape heads cause sound deterioration. After every 10
hours of use, clean the tape heads with a head cleaning
cassette. Refer to the instructions of the cleaning cassette.
To demagnetize the tape heads
Use a demagnetizing cassette after every 20 to 30 hours of
use. Refer to the instructions of the demagnetizing cassette.
Care of CDs
When a CD becomes dirty, wipe it from the center out with a
cleaning cloth. After playing a CD, store it in its case. Do
not keep it in hot or humid places.
Care of tapes
Store tapes in their cases after use. Do not leave tapes near
magnets, motors, television sets, or any source of
magnetism. Do not expose tapes to direct sunlight, or leave
them in a car parked in direct sunlight.

REFERENCE
Troubleshooting
If your unit fails to perform properly, check the following guide
and the relevant sections of the Operating Instructions.
There is no sound.
•Are the speakers and AC power cord connected properly?
The unit shut off suddenly.
•Possibly a short circuit in the speaker terminals.
Disconnect the AC power cord from the AC power outlet
and re-connect the speaker cords correctly.
The unit blacks out when the unit is turned off.
•Is ECO mode set to on?
Erroneous display.
•Reset the unit.
Poor radio reception.
•Check antenna connection. Adjust the antenna to find the
best reception.
•Move unit and antenna away from other electric appliances
and cords.
The tape does not run.
•Is the deck in pause?
Poor tape sound.
•Check for dirty heads. Clean them if needed.
•Use type I (normal) tapes.
Cannot record.
•Is the erasure prevention tab of the tape broken off? If so,
cover the detection slot with adhesive tape.
The CD player works poorly.
•Is the disc correctly loaded?
•Is the disc dirty?
•Is the lens affected by condensation? If so, wait
approximately one hour and try again.
Resetting the unit
If an unusual condition occurs in the display window or the
cassette deck, reset the unit as follows:
1 Press POWER to turn off the power.
If the power cannot be turned off, disconnect the AC power
cord, then plug it in again.
2 Hold down s and press POWER.
Everything stored in memory after purchase is cleared.

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1 Answer

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Akai reel to reel GX230D


Try demagnetizing the heads with a head demag device. This is not the same as a bulk tape eraser or a tape demag device.

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