Muffled sound One of my Gemini PDT 6000 decks sounds muffled, like there is fluff on the needle. Ive tried switching decks and needles so know it's the turntable but don't know how to fix it

If the turntable's cartridge/needle are "magnetic", you need an amplifier with a "PHONO" input. Most new amplifiers do NOT have one, as that stopped when CDs began replacing LPs decades ago. Since the reemergence of LPs, some expensive amps have added a PHONO input again. Only really cheap turntables have CERAMIC cartridge/needles (usually under $100), which work fine with any amplifier input but are of a much lower quality than magnetic. Places like Radio Shack and The Source sell inexpensive Pre-amplifiers for this task of increasing the sound level and correcting the frequency response to RIAA standards. The latest turntable I bought had a Preamplifier built in plus a USB connection for converting LPs to Digital.

Hi,
You can download the user manual for Gemini cdmp-6000 from here.
Hope this helps, please rate and leave a comment if the solution was helpful, thanks!

see if you can gently straighten the handle into the proper alignment.

The switch that the button actuates is probably broken. The unit will need to be serviced.

Try turning the mixture screw up a little or if nothing else ive heard of the plug that goes into the carb nees to have the long needle trimmed to the height of the shorter needle in the plug

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.

Check the internal circuit of the deck, follow the leads from the cartridge. Perhaps a faulty resistor or something else in any pre-amp. Make certain also it's not your amp that has not got a faulty phono pre-amp stage.

is there signal lights comeing up on mixer or have u got sound in headphones.have you tryed changing needles,is the phono/line switch set right,also try changing over deck sides an let me know. sound

I don't know if this model is direct driven or by belt. If it's belt driven then the belt could be fitted incorrectly, or faulty. Another possibilty is that there's a fault in the motor control circuit.

HELLO
I have just posted a cure for this deck, it is to do with the microswitches under the speed select buttons - they need to be replaced. Just repaired mine today - now there are no more problems selecting speeds.
If the speed goes back to 33 when the deck is switched off, this is because 33 is the default.
ALL THE BEST!