How to use and troubleshoot the SMC2035 - Singcast Max

SMC2035 Karaoke System

Overview

SMC2035 is a karaoke system that supports SingCast (Wi‑Fi casting to a TV), Bluetooth audio, and AUX IN.

Key features

  • Preferred karaoke experience through the Singing Machine mobile app
  • SingCast (Wi‑Fi casting) to a TV (HDMI connection required)
  • Bluetooth speaker mode for audio playback
  • AUX IN for an external audio device
  • Recording and playback features on the unit (see the user manual for details)

What's in the box

Please make sure that the following items are included.

  • Main Unit
  • Cradle with mic holders (Detachable)
  • Extendable mic stand
  • AC Adapter
  • Wired Microphone
  • Manual

Using the Singing Machine app

Stream karaoke directly to your machine

The Singing Machine app is the recommended way to access thousands of karaoke songs. Pair the app to your machine and stream karaoke videos with on-screen lyrics.

What you get with the app:

  • 100,000+ songs — Access a large karaoke catalog with new songs added every Friday
  • High-quality videos — Karaoke videos with on-screen lyrics, plus lyrics-only mode
  • Ad-free experience — No interruptions while you sing
  • Optional lead vocals — Toggle lead vocals on or off
  • DJ mode — Queue up to 100 songs and control the playlist from your device
  • Easy pairing — Quick wireless connection between your device and karaoke machine

Getting started:

  1. Open the Singing Machine Karaoke app on your phone or tablet.
  2. Turn on your karaoke machine.
  3. Connect your device to the karaoke machine (Bluetooth or SingCast, depending on what you are using).
  4. Choose a song in the app and start singing.

Subscription options:

Purchase an in-app subscription to unlock unlimited access to the full catalog. Certain plans include a 30-day free trial.

Connecting to a TV (HDMI)

SingCast requires the unit to be connected to a TV.

Setup steps

  1. Connect an HDMI cable from the unit's HDMI OUT to an available HDMI IN on your TV.
  2. Use your TV remote to select the correct HDMI input.

Important note about TV audio

Bluetooth audio and microphone audio do not output to the TV. You will hear audio through the unit's speakers.

Connecting to Wi‑Fi (for SingCast)

You will use QR codes on the TV screen to connect the unit to Wi‑Fi.

Before you start

  • This model supports 2.4GHz Wi‑Fi only.

Setup steps

  1. Connect the unit to your TV using HDMI.
  2. Use the unit's NAV/ENTER control to select SINGCAST.
  3. Scan the Step 1 QR code with your mobile device and wait for it to connect.
  4. Scan the Step 2 QR code and select your home Wi‑Fi network.
  5. Enter your Wi‑Fi password.

Switching Wi‑Fi networks

Go to SETTINGS > WiFi setting > DISCONNECT.

Connecting via Bluetooth

You can use Bluetooth to connect your phone or tablet to the karaoke machine for audio.

Pairing steps

  1. Turn on the karaoke machine.
  2. Enter Bluetooth mode either by pressing the Bluetooth button on the unit or selecting Bluetooth from the menu.
  3. On your phone or tablet, open Settings and select Bluetooth.
  4. Turn Bluetooth On.
  5. Select SINGING MACHINE from the list of available devices.
  6. If prompted for a PIN, enter 0000.

If Bluetooth connects but you cannot hear music

  • Turn up the volume on both the karaoke machine and your phone or tablet.
  • Make sure your music app is open and playing.

Connecting with an AUX cable (AUX IN)

You can connect another device using a 3.5mm audio cable.

Setup steps

  1. Plug one end of a 3.5mm audio cable into your device's headphone jack (or audio adapter).
  2. Plug the other end into the karaoke machine's AUX IN port.
  3. Start audio playback on your device.

Tips

  • Set your device volume to about one-third to avoid distortion.

Troubleshooting

No power

  • Press the ON/STANDBY/LIGHTS button to turn the unit on.
  • Confirm the AC adapter is connected securely to the rear of the unit.
  • Try a different wall outlet.
  • If the unit is not responding due to interference, restart it and try using it in another part of the home.

No sound (general)

  • Turn up the Master Volume.

No sound when connected to a TV

  • Make sure SingCast mode is selected.
  • Remember that Bluetooth audio and microphone audio do not output to the TV.
  • Check the TV volume and unmute if necessary.
  • Select the correct source (usually HDMI) on the TV.

No sound from the microphone

  • Make sure the microphone is firmly connected to MIC 1 or MIC 2.
  • Make sure the mic ON/OFF switch is set to ON.
  • Turn up the MIC VOLUME.
  • Turn up the Master Volume.

Bluetooth will not pair or connect

  • Turn off other Bluetooth devices to avoid accidental pairing.
  • Make sure Bluetooth is enabled on your device.
  • Put the unit back into pairing mode and try again.

Bluetooth is connected but there is no music

  • Make sure your Bluetooth device supports Bluetooth audio (A2DP).
  • Turn up the volume on your phone or tablet.

Failed to connect to Wi‑Fi

  • Make sure the unit is within Wi‑Fi signal range.
  • Confirm your Wi‑Fi is 2.4GHz.
  • Verify the Wi‑Fi password is correct.
  • Make sure your mobile device and the unit are on the same Wi‑Fi network.
  • WPA3 security settings can cause connection issues. If possible, switch your router to WPA2 or lower.

Need help casting? Start here

Scanning the QR code fails

  • Rescan the QR code.
  • If needed, try a dedicated QR code scanning app.
  • You can also connect through SETTINGS > WiFi setting on the unit.

No internet connection

  • Make sure the unit is in SingCast mode.
  • Verify the correct Wi‑Fi password is entered.
  • Move the unit closer to the router if the Wi‑Fi signal is weak.
  • If you are troubleshooting, connect the unit to a phone hotspot to confirm the unit can join a network.

Cannot find the unit in the app casting list, or no casting video to TV

  • Make sure the unit and your mobile device are on the same Wi‑Fi network.
  • If you use a mesh router, enable the router setting that allows devices on the network to see each other (sometimes called "Access Intranet").

Missing or broken parts

The box should include a main unit, cradle with mic holders, extendable mic stand, AC adapter, wired microphone, and manual. If any of these parts are missing or damaged, here is the best way to resolve the issue:

Microphone

If a microphone is missing, you can contact our team with the original receipt and we will be happy to sort this out with you.

If you broke a microphone, you can purchase a replacement from our online store:

AC adapter

If you need to replace the AC adapter, use one that matches the following specifications:

  • Output voltage: DC 16.1V
  • Output current: 3.5A (higher amperage is also safe)
  • Polarity: Center pin positive

When searching online, try a phrase like "16.1V 3.5A power adapter center positive" to find compatible options. Always confirm the voltage and polarity before use — using the wrong adapter can damage the unit.

Specifications

  SMC2035
Output Power 35 Watts (RMS)
Bluetooth Version V5.0
Bluetooth Range Up to 30 feet / 10 meters (open space)
Wi-Fi Frequency 2.4GHz
Power Input 100–240V, 50/60Hz
Power Output DC 16.1V, 3.5A, Positive Center
Dimensions (Main Unit only) 10.3 x 10.3 x 12.6 inches (26.2 x 26.2 x 32 cm)
Dimensions (Main Unit + Mic stand) Adjustable height max. 64.2 inches / 163 cm (optional)
Weight (Main Unit only) 4.6 lbs (2.1 kgs)
Weight (Main Unit + Mic stand) 5.4 lbs (2.5 kgs)
Microphone -74 dB, 600 Ohms impedance, 6.3mm Dynamic Microphone

Specifications are subject to change without notice.

Downloads and resources

Still need help?

Contact Singing Machine support:

  • Get help quickly via our chat bot — click on the chat bubble in the bottom-right of our help page
  • Send us an email by submitting a request here or clicking the link at the top-right of our help page
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