20 Most Recent Vocopro DVD-Duet Multi-Format Karaoke System Questions & Answers

Hello. For the manual and remote your best option is to search online. As far as the echo goes, this is just a cheap microphone with a cheap system. It will not go away unless you turn the volume down on the system. If you want to put good money down on a nice SHURE brand microphone it will definitly help with the echo, however it will not make the system any better.

Try CAREFULLY cleaning the CD reading lens with a Q Tip moistend with 91% isoprophyl alcohol... DO NOT use rubbing alcohol.
Check if your CD's have fingerprints or other contamination. Clean those with windex and a soft cloth rubbing ONLY outward from the center, NOT circular.

It is possible the carriage that the CD goes in does not lower onto the center hub rather than the hub being too low.

The carriages move by a small motor and often there is a belt that slips so carriage doesn't move. Replacing the belt is usually required.

Working on the CD drives is very tender fragile work so you should take this to a repair shop. Contact the manufacturer for a recommendation.

You might try emailing the service centers listed here and see if you can get lucky:http://www.vocopro.com/servicecenter.php

Find an identical unit and compare how you re-installed the part to the original.

The most likely case is that one of the main output transistors (if which there are many) is shorted. When the protect circuit senses DC on the final output, it will not allow the output relay to come on to protect the speakers from raw DC. With the power removed, you can check between each outputs Emitter and Collector and you will probably find close to zero ohms. From that point you need to unsolder each of the pins of the bad channel until you find the shorted device(s) and replace them.

'pianoforte'

BREV. N. 838420

See page 22 troubleshooting of this manual. It may help you. dd501 (yamaha.com)

Depending on the model, there are four around that date, it could be the insert jacks are tarnished reducing the signal flow between the pre amp stage and digital power amplifier. It could be the power amplifier has failed. It could even be customer error in wiring. This assumes there is the correct level of signal entering the input sockets of course.

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