1210 problem The problem occurs on both decks. At mid to high volume when the needle is on the record if i touch or tap anywhere on the deck u hear the tap thru the speakers . At high volume im getting a rumbling noise which comes and goes. It is not my cartridges, Have just replaced rca cables and ground wire and am pretty sure done it properly. have been told may be tone arm but wot can go wrong with tonearm to cause this?

You have two options. First a faulty cartridge. Or a faulty pre-amp in the main amp.
You can find out if the cartridge (and amp) are playing up. By removing the connectors on the cartridge.
Then with the volume turned up to about half, with your finger, touch each one of the wires one at a time. It will not harm you at all. But you should hear a loud buzz on one wire on the right and a loud buzz on the left on another wire.
The two other wires will either produce a crackle, or a tiny buzz, or nothing at all.
If you do hear a loud buzz on two wires. The cartridge is faulty and needs replacing.
If you hear a slight buzz on them or weak sound. There is either a bad connection between the deck and amp. Or the pre-amp inside the deck which is only used by the record deck so will not effect any other function, is faulty.
You can remove the record deck connections to the amp and again with the amp on half full, touch the inputs with your finger. If you are not hearing a loud hum or buzz, the pre-amp is faulty. If you do the connectors are faulty.

Do you have these turntables on an anti-static mat, or some other non-conductive surface?

Well, here is the situation as I understand it. Here is also some theory to help you out.
Your Receiver or Amplifier has a "scale" showing relative volume. Distortion always increases in speakers and amplifiers when you turn them up. If the sound is getting extremely distorted, the Receiver is attempting to operate above it's maximum output. The scale is an average, but because music recordings are often mastered at different levels, "80" may be too much. When an amplifier section of a receiver is over driven, the distortion (which you observed) will damage or burn out your speakers. Most likely the tweeter (high frequency speaker)
If you back off the volume, or turn down the output of the deck until the sound becomes clear, then that level, IS FULL VOLUME. Based on what you are saying to me, I don't think anything needs service.
There is one other very important thing I should mention to you. When people use high powered equipment and initially turn up the sound. After a short time, the mind turns it down. What next happens is the reason professional musicians and sound engineers often have permanent hearing loss after a relatively short time.
What happens is that the listener and often the engineer running the sound board at a concert thinks the sound is not loud enough (when the audience is happy with the level) and turns it up. After turning it up, his mind (and the audiences') turns it down and then he thinks it not loud and then again turns it up. And up. And up. The only reason I'm not deaf is that I discovered this when I was building sound systems as a kid. I also studied about it. So please be careful when you play things loud. Permanent hearing loss starts to occur at the very high frequencies and rolls down from there over a period of time. Hearing loss can start to occur in just a few hours.
at 110 decibels. It doesn't come back. If you understand this, you'll keep your hearing.
I hope this helps,
Best Regards,
Mark

If the cartridge is good and your wiring is good. Then it's either got to be a fault on your amp, or there is a pre-amp in the deck itself faulty. Double check that the amp is working, amps have a pre-amp for record decks, they cause trouble a lot.
If you touch the wires that connect to the cartridge, you should get a buzz on either channel (remove them from the cartridge first). If you don't get a decent buzz, and you know that the amp is working fine, then there's something inside the deck causing the problem. In which case take the bottom off and take a look inside.

Try turning the volume up on your laptop up to high, while the volume on your deck is lower... This will put a stronger signal into the deck first... you may get more bass, Another trick is to EQ the highs and mids lower and crank up the bass... see if you get an acceptable amount of bass with these tricks..

your needles gone.or you've moved the tip by touching it.
try & twist the tip back straight.

A LITTLE TIP FOR YOU ....u should never wipe or touch the tip of a needle with your fingers coz the greese off your skin ***** them.blow it or use a little fine brush.

are you running phono pre amps ? are you running pre amps to each deck or one for both decks , if you are running pre amps maybe the power supply is not sufficient to run two decks anymore [ possibly damaged ] but it sounds like a power delivery failure to me . hope this helps

First and foremost, the tonearm has absolutely NOTHING to do with the power. They are not connected in anyway. The only thing that links them is the tonearm is grounded to the chassis of the turntable. Nothing else. However, this will not cause this sort of problem.

Turn on your turntable without using the POP-UP light - keep the light down/off. Try it then. If it works, than the issue is there. If you still have the same problem, then the issue is something on the main drive circuit board which is overheating, and the fuse is going to protect the unit from any damage. Take a look at R213 - see if it's burnt around it's area. If so, more than likely this is the culprit.

This is not an easy diagnosis. Highly recommend taking it to a service center.

- OPTiC
Turntable Repair Expert
Digital Analog Therapy

Since you've already replaced your RCA cables, and tried different cartridges, the only other thing that would cause this type of issue is your tonearm. It's probably on it's way out, and will need to be replaced shortly.

You can obtain a replacement tonearm HERE, however, it's rather difficult to replace the tonearm without experience or knowledge on soldering.

Good luck!

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