20 Most Recent Technics SL-1200MK2 Turntable - Page 4 Questions & Answers

Web search "hum on turntable with ground" for various techniques to analyze it.

It is a dirty controland is a common problem, remove nob and clean with cottact cleaner, or elctronic cleaner, you pick it up at radio shack, get it at www.mcmelectronic.com

You need to check that the signal is getting to the amp. This can be done by removing the wires off the cartridge for the left and right channels. With the amp on touch the ends of the wires. If you hear a buzz the signal is getting to the amp and the cartridge is dead, but if you hear nothing and if the wiring is as you say good. Then the pre-amp in your amp for the cartridge has failed. This pre-amp will only affect the record deck and no other functions. If it has gone you can trace the wires from the sockets to it. Sometimes it will be on a seperate PC board. It's often a single IC that has failed. If you can replace it yourself be careful with the new one as these are often static sensitive chips.
PS the phono scokets on the amp sometimes buzz if you pull the plugs in & out!

33 1/3 and 45 RPM Selector;---With these selector you have to choose the playing speed of the platter. Most 12" vinyl records with 1 track need 45 RPM, all others 33 1/3. Although this is no hard rule you could use it as a general guideline.----------
Pitch bend trick when on 33 1/3 RPM:---Some people use a little pitch-bending trick when the 33 1/3 RPM mode is selected. When a track is playing you can hold down the 33 1/3 RPM button and at the same time press the 45 RPM button. The speed will increase to 45 RPM but when you use it with tiny little pushes you can perform an un hearable positive pitch-bend.
------------------------Its quite possible that this buttons are getting jammed, they are not making proper contact.Try spraying contact cleaner spray directly to the side of the button and let it remain there, then press both 33 and 45 buttons few times and see if that makes any difference, but if that is not helping then,it sounds like a short on the pcb, one of the IC's could have gone bad, or the 33/45 have shorted out. -------- So its working on both 33 and 45 speed but not switching from 33 to 45 or from 45 to 33.-------- But first try freeing the 33 to 45 switch button.It must be getting jammed due to dirt or anything blocking it.---------- If that is not helping then try other things,---------- This will help.Thanks.Helpmech.

No it's either the stylus or the pressure to the stylus is not enough. The weight at the end of the arm will increase the pressure on the stylus. Turn it up in slightly testing a record till the stylus tracks in the grooves. The trick is to get it so that it stays in the groove without creating a rumble sound. Remember though a worn stylus will not track at all.
Most cartridges track at 2 to 3 grams. If the Weight on the arm has numbers they will correspond to the weight in grams. If you have to raise it very high the stylus is too worn.

Hi,

You could request the same from :

http://dual-reference.com/Contacts/SCmain.html

Or you could contact them at :

http://dual-reference.com/Contacts/SCmain.html

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

who ever told you that is a ****, start n stop are tied into the power of the turntables motor etc. if you plug the turntable in turn it on n hit start. it should start. if not who ever sold it to you made a BS lie to get rid of them cause the motor was burnt out. start n stop have nothing to do with the mixer what so ever. so try just hooking up the turntable and turn the power on. see if anything lights up then his the start button and see if the platter starts to move if not its your motor.

do you have your timecodes set properly and configured with serato? that could be the issue try adjusting the timecodes w serato and basically re sync them. if this doesnt help please let me know

To adjust stopping speed you'll have to remove the plate by pulling it up. Then there is a plastic cover that has some screws, remove the screws and remove the plastic cover, you'll find a variable resistor that reads something like brake. Adjust it to the left or to the right with a screwdriver and see at which position works best.
To solve the constant speed problem you'll have to replace the pitch regulator.
Go to any panasonic/technics service and buy the pitch. If you have a bit of soldering skills you'll be able to replace it by yourself. You can access the pitch regulator unscrewing all the screws under the device and then removing the cover.
Hope you can solve the problem!

Hi, I recently had a client with the same problem. The voltage regulator circuit driver transistor needs replacing. Cheers John

Hi, are you inputing your decks through channel 3 and 4 phono?

Hi, there is no need to replace the entire tonearm. I can supply you with the very end part which is held in by two screws. [email protected]. John

Hi, have you tried manually moving the tonearm (with tt off) from its stating position across the platter to the centre? If you do this and find you get resistance at a certain point then there is damage to the tone arm base or bearings. Is the tonearm lifter going down completely?

I'd fix the tonearm issue first before using it to decide you have a feedback-related issue with one brand of cartridge. I can't say how that would be fixed.

Feedback? Like airborne sounds from the speakers vibrating the turntable and being amplified through the speakers? The biggest downside to old-school vinyl use is that possibility and the workarounds we had to use to prevent it. Acoustic and physical isolation are the only solutions.

You can try to recalibrate it by using the potentionmeter or 'pots' as they are sometimes called. There are two of them. One is on the main circuit board and one is on the pitch control. Either way you will have to take it apart to get to them.

Important*** When you have the platter off, do not hit the start/stop button!! This will ruin your motor.***

The easiest thing to do is order a new pitch control. They are relatively inexpensive and they are easy to replace.

The chances are the rubber drive belt has either broken or stretched so that it has fallen off the drive pulleys.
You will need to gain access to the underside of the turntable to replace it.
With most turntables the process will be to secure the tone arm (a rubber band will do the trick) before turning the whole thing upside down and unscrewing the base.
Replacement drive belts are easily available on the internet. Search by make and model number of your turntable

Sounds to me like the belt has snapped or slipped off. Lift the platter off the table. On the inside of the platter you will notice a second ring, or rim. the belt should be put on the outside of the second rim while the platter is still in your hands. Next, slide back the platter and look for the spindle running the platter through one of the big holes in the platter. Slip the belt onto the spindle and turn with your hand to make sure it runs freely. Hope this helps

If it's connected to a NON-PHONO-equipped receiver it will sound very weak and tinny for a number of reasons.

Read http://en.wikipedia.org/wiki/Phonograph for why.

Get a PHONO preamplifier.

http://shop.ebay.com/?_from=R40&_trksid=p3984.m570.l1313&_nkw=PHONO+preamplifier&_sacat=See-All-Categories