The Singing Machine SMG-138

Questions and Answers

T
Travis BarkerJul 29, 2025
Why is the CD player not working normally on The Singing Machine SMG-138 Karaoke System?
- E
  Eduardo MoranJul 29, 2025
  If your CD player isn't working correctly or displays unusual symbols, consider these potential causes: Ensure the disc is inserted correctly, with the correct side up. Check if the disc is dirty and, if so, gently wipe it clean with a soft cloth. The disc might be scratched or warped, in which case, try using a new disc. Make sure you are using a standard disc. If moisture has formed inside the CD deck, wait 20-30 minutes for it to dry out. As a last resort, try resetting the Singing Machine by unplugging it for 30 seconds.
A
Anthony AndersonAug 2, 2025
How to fix no song lyrics on the screen for The Singing Machine SMG-138?
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  Victoria LaraAug 2, 2025
  If no song lyrics appear on the screen when using The Singing Machine Karaoke System, ensure the video cable is correctly connected from the system's VIDEO OUT to the TV's VIDEO IN. Also, make sure the TV's source selector is set to VIDEO input using your TV remote. If your TV lacks a video line input, connect the system's VIDEO OUT to the VIDEO IN of your VCR, or use an RF Modulator connected to the TV cable input. Verify the disc is a CDG and clean if necessary.
R
robertmcbrideAug 6, 2025
What to do if there is no sound from The Singing Machine Karaoke System?
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  Barbara HarrisAug 6, 2025
  If you're not getting any sound from your Singing Machine Karaoke System, first, check that the volume control isn't set to the minimum; turn it up. Also, ensure the volume on your TV or PA system isn't too low, and that the TV or PA system is powered on. If you're using AUX OUT jacks, ensure they are properly connected. Finally, make sure the correct function is selected on the Karaoke System.
M
Margaret UnderwoodAug 10, 2025
How to troubleshoot no power on The Singing Machine Karaoke System?
- R
  Raymond WrightAug 10, 2025
  If your Singing Machine Karaoke System isn't powering on, even when the POWER switch is on, make sure the power plug is securely inserted into the AC outlet.
D
David MillerAug 15, 2025
What to do if The Singing Machine SMG-138 has no sound through home stereo?
- P
  parkronaldAug 15, 2025
  If you're experiencing no sound from The Singing Machine Karaoke System when using a home stereo, ensure that the source selection on your stereo is correctly set to AUX IN. Also, check that you've properly connected the Karaoke System to your stereo system.
R
Richard NielsenAug 19, 2025
What to do if The Singing Machine SMG-138 Karaoke System has no power when plugged in?
- K
  Kristy RodriguezAug 19, 2025
  If your Singing Machine Karaoke System doesn't power on even when plugged in, the AC outlet might not be working. Test the outlet with a working lamp or another electrical appliance.
C
Christopher BaileyAug 23, 2025
How to fix The Singing Machine SMG-138 when there is no sound through TV or VCR?
- J
  Jonathon FreemanAug 23, 2025
  If you're not getting any sound from The Singing Machine Karaoke System when connected to a TV or VCR, ensure that the source selection on the TV or VCR is correct.

Summary

Warnings and Cautions

Electric Shock and Laser Safety

Warnings about electric shock, opening the unit, and laser radiation exposure.

Important Safety Instructions

General Safety Practices

Read, retain, heed instructions; cleaning, water, attachments, placement safety.

Ventilation and Power Sources

Ventilation requirements and guidelines for selecting appropriate power sources.

Important Safety Instructions (Continued)

Plug and Cord Safety

Safety concerning polarized plugs, grounding, power cord protection.

Antenna Grounding Safety

Guidance on grounding outdoor antenna systems for surge protection.

Important Safety Instructions (Continued)

Environmental and Usage Safety

Precautions for lightning, overloading, object entry, heat, and nonuse periods.

Servicing and Replacement Parts

Guidelines for product servicing, damage, and replacement parts.

Karaoke Glossary of Terms

Echo

Adds depth and resonance to a singer's voice.

Multiplex

Split track recording with selectable lead singer vocals.

Auto Voice Control (AVC)

Eliminates vocals when singer starts singing.

Pitch Control

Controls pitch by adjusting tape playback speed.

Key Controller

Adjusts the key of CD/CDG music.

CDG Explained

Compact Disc plus Graphics for lyrics and simple graphics.

Introduction to Your Karaoke System

Control Locations

Front View Controls

Identification and layout of controls on the front panel of the unit.

Control Locations

Rear View Connections

Identification of rear panel jacks and connectors.

Making the Connections

Connecting Power and DC Jack

Instructions for connecting the unit to AC power or a DC source.

Connecting to Your TV

Steps for connecting the unit to a TV for video and audio output.

Making the Connections

RF Modulator and TV;VCR Setup

Using RF Modulator and common TV/VCR input selection methods.

Making the Connections

Audio Connections

Connecting the unit's audio outputs to a TV or stereo system.

Connecting Audio Components

Linking external audio components to the unit's AUX OUT jacks.

CD or CD+G Operation

Preparation and Disc Handling

Procedures for preparing the unit and handling compact discs.

Basic Operation

Turning power on/off and loading discs into the player.

CD or CD+G Operation

Playback Modes

Using Play/Pause, Stop, Skip, Search, Repeat, Program, and Intro functions.

Care and Maintenance

Unit and Disc Cleaning

Instructions for cleaning the unit exterior and compact discs.

CD Player Mechanism

Maintenance notes for the CD player mechanism itself.

Troubleshooting Guide

Troubleshooting Guide (Continued)

Specifications

Notes

Limited Warranty and Service

The Singing Machine SMG-138 Specifications

General

Type	Karaoke System
Connectivity	Bluetooth
Display	LED Display
Power Supply	AC adapter
Microphone Inputs	1
Built-in Speakers	Yes
USB Port	Yes
SD Card Slot	No
CD Compatibility	CD+G