Numark Audio Players & Recorders - Page 8 - Recent Questions, Troubleshooting & Support

You are correct. Most are caused by a semi-conductor device. So the rectifier is a possibility. But also check devices with heat sinks on such as voltage regulators. Transistors and diodes and the transformer are easily checked with an Ohm meter. If it's faulty it will be just like you have touched the test probes together!

You need to have more information, It could simply be a level setting.

There is not enough information to answer your question but You may have zaped the input with static electricity and blown it.

I am not familiar with your unit but it sounds like a bit of alcohol on a "Q" tip and clean the laser would help but be very careful it is fragle.

I'm sorry. I have never heard of a manufacture publish a specification on that. Why do you ask?

Nope, nothing to it. The platter is just held down by gravity. Take a mallet or a piece of 2x4 block, and give the spindle a little whack. Not too hard, just enough to break the hold.

- OPTiC
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The m3 has two phono inputs in the back. There's a switch for either line- in or phone. Put the switch to phono.

While I'm not familiar with your unit, there are a number of different issues that may cause this, such as a power supply issue or a bad microprocessor(computer). For more information or repair, please visit my website at audioserviceclinic.com. You may contact me through the website contact page. Thank you.

If the primary of the transformer has failed it doesn't follow that the main power supply parts are also faulty. However since the transformer is a safety part you need to replace it with the same thing. However it seems from this website that transformers are not expensive compared to a new deck, so a look around here might solve the problem.

You certainly can replace the drive IC as mentioned above, however there may be dozens of other items that can cause the same issue. Here are some; bad regulator ICs, pull down resistors for the power supply or the drive IC, capacitors in the regulated power supply.....the list goes on and on. You most definitely must take ESD precautions(Electrostatic Discharge). Without taking these precautions, you may destroy the parts you are replacing, before you even put them in! You must be able to perform fine soldering to replace any of these parts. For more information, please visit my website, audioserviceclinic.com.You may contact me directly through the website. Thank you.

What is serial number

Bad mechanism or probably switch. Take to shop. Peace.

It looks like your amplifier has not got a "magnetic cartridge pre-amp" built in, or you have it connected to a tape/cd input instead of a phono input. All you need is to search online for one and that will connect between your deck and amp and it will then be the same volume as anything else connected to the amp.

See what cartridge is in it.

This sound like it could be somekind of feedback hum, or earthing problem. Check all the connections.