Question about Philips Magnavox 27MS343S 27" TV

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I have a Magnavox astrosonic Stereo console Model 1P3813.

The turntable does not work properly. How do you adjust the set screws and arm weight to proper specifications? Where can I Ifind a repair manual for this antique?
Thanks,
Rick

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4 Suggested Answers

SOURCE: Philips 777 stylus force adjustment

LM15 has an elliptical stylus so 1,5 - 1,8g should be sufficient, and also dial the same number on the anti skate for elliptical stylus and go for it

Posted on May 26, 2008

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SOURCE: How do I set the color properly on a 52 in.

Could you let me know why you believe the color needs adjusting first?

Posted on Jun 04, 2009

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SOURCE: I have a Magnavox Micromatic stero console and

Record Town in Fort Worth has them. They are at 3025 S University Dr 817-926-1331. He has a couple on order for me now. His name is Sumpter. They have been in business there since 1949.

Posted on Apr 07, 2010

gopakumarg43
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SOURCE: I need user manual for philips tv model lc4 41e to be able to set up

http://www.retrevo.com/
Visit this site to download it.

Posted on Feb 25, 2015

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I have a Magnavox stereo console: Astrosonic Series. The record player was playing fine until a month ago. The volume is now so low you can hardly hear the record playing


Since the volume of the radio seems to be fine it is doubtful that the amplifier is malfunctioning. I will check the stylus to see that it's fully seated and examine the wires in the tonearm that connect to the cartridge. If they seem okay then I suspect the cartridge may be bad

Mar 02, 2015 | Audio Players & Recorders

2 Answers

Record keeps skipping arm won't move toward center of record


Sounds like your arm is tracking too light. To proper set the tracking weight on most units you need to zero the arms balance so that it is balanced just at the surface of the record. Once that is done using the weight on the back of the tone arm, or whatever system your unit uses, there should be an adjustment by turning the weight on the arm or perhaps a lever near it. You owners manual should really explain all this and give the recommended tracking weight in grams and fractions of grams. Each weight is different for different styli. Take a look at your operation manual and adjust the weight. Let me know how you make out.

hardrocko

Thanks for using FixYa

Feb 22, 2010 | Numark ttUSB Turntable

1 Answer

This is a question for my daughter who lives in Japan. She has a Crosley turntable she bought from Urban Outfitters. The stylus arm has suddenly started skating over the record, ie won't play anything. ...


I have no experience of Crosley turntables, however, stylus arm skating across the record surface on any turntable is normally due to the counter balance weight being incorrectly adjusted. In order to track across a record properly, the stylus must press down on to the record very lightly. If there is too little pressure, skating is what tends to happen. Too much pressure can cause distortion of the sound and excessive wear of the record.

At the pivoting end of the stylus arm, there should be a counter balence weight. This is normally adjustable (but not always - depends on quality and features of the particular turntable), and is used to set the pressure the stylus applies to the record surface, measured in grammes. The manual that came with it should tell you how to adjust it, but for most turntables stylus pressure is between 1 to 3 grammes.

If you dont have the manual, have a good look at the pivoting end of the stylus arm to see if soemthing is obviously wrong, or if not whether there is something with numbers on it that can be turned or slid. This is likley to be the counter weight. Try adjusting it.
Within reason, the stylus weight isnt critical so a "trial and error" approach wont do any harm.

Nov 12, 2009 | Crosley CR249TA Turntable

1 Answer

Sears Tape deck/Turn table skipping!


Hi the pennies will mess up the stylus. There should be an anti skate setting at the back of the turn table, a round adjustable bit with numbers, increase the anti skate and then use the balance weigth (weight right at the back of the arm that turns to get the weight right. Set the anti skate with the tone arm light, then increase the weight a bit. Hope that helps

Jun 14, 2009 | Technics SL-1210 Turntable

2 Answers

Skipping


That is correct, your tonearm needs to be replaced.

By adjusting that top screw on the tonearm, you only made the problem worse. It's very hard to realign that screw, as those are machine calibrated, and once tampered with, almost impossible to get back to exact factory settings. We recommend replacement of the entire Technics tonearm.

- OPTiC
Master Tech, 1200s.com
Technics Parts : DJ Gear Repairs



Jun 09, 2009 | Technics SL-1210MK5 Turntable

2 Answers

Magnavox Console Stereo turntable does not turn at correct speed


I'm in Nashville, where can I have my 70"s Magnavox stereo console serviced to get bugs out of it as well as get new cartridges?

Nov 24, 2008 | Teac AG-V1050 Receiver

1 Answer

Re:


Hi Vat,
Although I live in Canada now, I was born in the former
Czecholsovakia. While I spent a year in the Czech Republic in
2006, I was amazed how advanced their technology was, in
comparison to Canada or the US. If you want modern technology,
Prague is the place to go. Anyway ...

1) As I said before, do NOT adjust the tone-arm weight up
and down. This setting must be set to match the stylus and
the cartridge !!! The wrong setting is very bad.

To get the weight adjusted correctly, do the following.

a) Check the cartridge and stylus (needle) specifications, on
the WEB if necessary.

A typical tracking weight is between 0.9 grams to 1.5 grams,
but this very much depends on the needle geometry. To much
weight will damage the needle and the record, but

so will too little, because the needle will not stay on the
surface, skipping or mistracking on loud passages.

Note that the tracking acceleration is proportional to the
the square root of the loudness, multiplied by the frequency
squared. So if the tracking force is too low, the needle will
bounce over high frequencies and damage the record as
well as the needle's tip.

2) Once you know the correct force for your needle, adjust
the rear weight for ZERO force, such that the needle just
floats weightlessly in the air. If your turn-table has an anti-
skating adjustment, set that to zero as well.

3) At this point the tone-arm should be totally weightless,
and should neither touch the plater nor swing up/down
by itself. It should float halfway.

4) A this point, adjust the rear weight's dial (not the weight) to
read zero. Note that the dial will slide, while you hold the
weight still. You have now calibrated the tone-arm's zero
point.

5) Now, adjust the weight (with the dial) to read the desired
tracking force, for example 1.25 grams.

6) Now adjust the anti-skating dial to the same number as
the rear weight. This setting compensates for the radial
(towards the center) component of the friction vector,
caused by the needle riding on the record groove, at some
specific (average) tone-arm angle.

7) Your tone arm is now balanced, and you should not
touch it after this, accept for minor adjustments.

For brand new records, you may lighten the tone-arm
by 10%. For old records, you can make it a little heavier.
Similarly, you can adjust the anti-skating to prevent a
record from skipping, but a bad record should be played
only once (and stored on your computer).

8) For some tone-arms and cartridges, the cartridge pitch
(up/down angle) is also adjustable. This requires a special
jig or gauge, supplied by the cartridge manufacturer.

The pitch can be adjusted either by the use of screws or
wedges, and by lowering / raising the rear gimble. On my
Technics SL 1200, the gimble elevation is adjustable with
a large ring, and my SURE V15 cartridge came with a guage
for adjusting it correctly.

9) It may also be possible to adjust the cartridge's yaw and
radius, but all of these adjustments should only be done
using the correct gauges and by strictly following the
cartridge installation manual.

10) NONE of these adjustments should effect the tone-arm
cueing or return process. There should be plenty of
clearence if the cueing mechanism is working properly,
except, perhaps, for the gimble elevation, if the cartridge
is unusually tall.

11) Is the cuing mechanism (i.e. the tone-arm lifter)
mechanical or hydraulic ?

Is it the lift consistent or does the tone-arm drop down
with time?

Does the tone-arm move parallel to the plater, or does the
stylus height change with tone-arm position (yaw)

You are looking for a mechanical defect in the cuing
mechanism.

12) How much over all lift do you get between the down position
and the up position? This should be at least 8 to 15mm

If the cuing mechanism is worn out, it may not move enough.

If it starts too low, it may move enough but not raise the
needle enough to clear the record.

If the cartridge is tracking too low, you may have to
remove some wedges or spacers between the cartridge
and the head, or lift the rear gimble if it is adjustable, or
get a different tone-arm head, that matches the cartridge
profile.

Finally as silly as this sounds, make sure that the
platter is fully dropped and properly engaged. If the
plater is too high, for what ever reason, this would also
cause the needle to drag.

Also make sure that the rubber mat on the plater is the
right one and that it is not too thick.

Martin


installation manual.

Jul 02, 2008 | Audio Players & Recorders

4 Answers

Well on my technics MK2 1210's, the little anti sketch settings and all the others probably arent set to what they are supposed to be, because my needle arm keeps jumping :P could someone tell me what all...


There are two main things that will influence the anti skate settings.

1) The Headshell Weight and Balance
Firstly, check the data sheet for the cartridge and stylus you are using. It should tell you the correct weight setting which will vary from one cartridge and stylus to another. If the stylus is set too light, it can skate across the disc. This can damage the disc and the stylus. The sound will also be thin and it is likely to distort on high frequencies. If the weight is too heavy, it will not jump but will definitely damage the disc.

If you are a serious vinyl user, get yourself a tone arm balance. This is a device that you place on the turntable and you rest the stylus on a plate which is marked in micrograms. You place the stylus exactly at the correct weight marking and then make adjustments to the turntable settings until the tone arm is balanced. It's easier than it sounds!

If you don't have the data sheet for your cartridge and stylus and cannot find it online, use an old disc that you don't mind damaging, set the weight on the light side and gradually increase the weight until it stops skating.

2) Platter Levelling
Secondly, you need to make sure your turntable us on a level surface. If you are a purist, use a spirit level. to do this.

There are other things that can cause skating and jumping, especially if you use the turntable as a DJ. For example, vibration (caused hopefully by dozens rocking to your music). DJs will often increase the headshell weight very slightly to overcome this and I have sometimes placed the turntables on a thick rubber sheet such as carpet underlay to improve shock absorption.

Mar 26, 2008 | Technics SL-1200MK2 Turntable

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