Technics Trouble... Please Help

Remove the red and it goes quiet? Put the red into the left channel, what happens? Put the left plug into the right right socket, what happens? Put everything back to the feedback, power off and remove the turntable cartridge, what happens?

This proves whether it is the cable or the internal electronics of the amp, or the wiring further up to the stylus cartridge.

you are the only one with the issue

https://www.google.com/search?q=Technics+SL-1210+feedback


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Hi, Replacing the rca plug at the end of the cable is just a matter of splicing the wires correctly. The wire is actually a 2 wire line, almost directly under the black outer casing will be the ground wire ( is actually going to be totally wrapped around the center wire ) this will be evident if you look at the cross section where you cut the cord. The replacement end can be purchased at the local Radio Shack, less than $3 probably for a pack of 2. When stripping the casing from the cord be carful not to cut away too much of ground wire sheath ( this may lead to difficulty in attaching new end ) it is almost inevitable to have a few strands of wire cut loose. The next step is to sort of " part " the outer sheathing, then kind of wrap both halves around the inner conductor as close to where you stripped outer sheathing away as possible. Next strip away the inner wires sheathing and you have the two ends to either solder, if you know how to, or tie through the holes of the replacement rca plugs leads. I hope this was of enough help and thank you for asking FixYa, Good luck-Prodzilla

The ground cable is usually a part of the audio cable. A red lead(right channel) and white lead(left channel) and a black lead. If there is no black lead, you can connect any wire to the metal portion of the turntable and the ground lead on your receiver. For more information, or should you have further question, please visit my website at audioserviceclinic.com. You may contact me through the website. Thank you.

Hi, likely but not the only cause. Check fly leads from cart to headshell.also.  You can check continuity between tonearm connection and rca's. [email protected]

The most obvious cause is the cartridge. However first of all check it's not your amp. Do this by reverseing the leads so the right goes in the left imput etc. If the fault doesn't go to the otherside, then it's the pre-amp for the cartridge that has failed in your amp (generally an IC).
If that's OK, then disconect the wires to the cartridge. If you then touch the end of them with your fingers you should get a buzz on either channel. If you do it's the cartridge, if not then the fault is inside the turntable somewhere.

Two causes a bad cartridge, or something wrong with the pre-amp for turntables in your amp. Reversing the leads into the amp should make the poor channel go to the other side. If it doesn't it's the pre-amp. If it is the pre-amp, they are not to diffcult to fix. Most are just an IC with a few components around it.

the usual problem with the 1210 is int. sound in one channel caused by the phono cable breaking at the clamp underneath.this can be replaced.tonearm wire faults can only be fixed by tonearm replacement.

The pitch controls are probably dirty and need to be calibrated. Any authorized Technics service center should be able to do this fairly easily. You can clean them out yourself by using DEOX-IT or similar, but would need a frequency counter to calibrate them.

- DJPROLAB

OK,

you have to turn it over, remove the rubber housing, remove the round metal guard from below...


ONLY DO THIS IF YOURE CONFIDENT IN SOLDERING SKILLS!!

You have to unsolder 4 leads ( stereo ) and solder on a new pair.

If you actually proceed, i can give you a better step by step.

But this process requires soldering..so.


Keep me posted.

What sort of problem are you having with the cords?