Casio LK-90TV Keyboard

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Page last updated Jul 01, 2026

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Description

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Unleash your inner musician with the Casio LK-90TV Keyboard, a versatile instrument designed for both budding pianists and seasoned players looking to expand their repertoire. This portable keyboard is a learning powerhouse, featuring illuminated keys that guide your fingers through songs with ease. The innovative 3-Step Lesson System and voice fingering guide make it simple for novices to hone their skills while enjoying the process.

What sets the LK-90TV apart is its unique ability to connect directly to your TV, offering a dynamic lesson display and karaoke functionality for endless entertainment. With 264 PCM tones and 120 rhythm patterns, your creative possibilities are virtually limitless. The 32-note polyphony ensures that your compositions are rich and full-bodied, whether you're practicing or performing.

Enjoy interactive scoring and practice phrase switching, enhanced by an LCD music information system that keeps you informed and engaged. The keyboard also includes auto-accompaniment and a 100-tune song bank, making it easy to play along with your favorite tracks. For those who want to take their music further, a USB port allows for MIDI and data transfer, seamlessly connecting you to your PC.

Key Features:

Lighted keys with 3-Step Lesson System
Voice fingering guide for easy learning
TV connectivity for lesson display and karaoke
32-note polyphony
264 PCM tones and 120 rhythm patterns
Auto-accompaniment and 100-tune song bank
Interactive scoring and practice phrase switch
LCD music information system
USB port for MIDI and data transfer
Pedal jack with sustain, soft, sostenuto, and rhythm options

Product specs

Brand	Casio
Model	LK-90TV 61-Key Key-Lighting Keyboard
Finish	Silver
Year	2010s
Categories	Portable Keyboards
Analog / Digital	Digital
Key Size	Full Size
Keyboard Action	Synth Action
Number of Keys	61 Keys
Polyphony	32 Voices

FAQs

Does the Casio LK-90TV Keyboard have lighted keys for learning?: Yes, the Casio LK-90TV features 61 lighted, touch-sensitive keys that assist with learning by illuminating during practice.
Can the Casio LK-90TV Keyboard connect to a TV for lessons?: Yes, the Casio LK-90TV can connect to a TV for displaying lessons and karaoke, making learning more interactive and fun.
What type of polyphony does the Casio LK-90TV Keyboard offer?: The Casio LK-90TV provides 32-note polyphony, allowing multiple notes to be played simultaneously without note dropouts.
Is the Casio LK-90TV Keyboard suitable for beginners?: Yes, with its 3-Step Lesson System, lighted keys, and voice fingering guide, the Casio LK-90TV is ideal for beginners learning to play the keyboard.
Does the Casio LK-90TV Keyboard have built-in speakers?: Yes, the Casio LK-90TV comes with built-in speakers, allowing you to play and hear your music without needing external amplification.
Can I connect a microphone to the Casio LK-90TV Keyboard?: Yes, the Casio LK-90TV has a mic input with level control, enabling you to connect a microphone for singing along or karaoke sessions.

Videos

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Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Casio LK-90TV Keyboard.

Software and compatibility

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Owners recommend a MIDI to USB adapter for connecting the LK-90TV to DAWs like FL Studio.
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Users frequently encounter connection difficulties, possibly due to driver issues.
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Drivers for the LK-90TV need to be run in compatibility mode, suggesting potential issues with newer operating systems.
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Features and functionality

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The keyboard's MIDI port is essential for controlling a DAW, not for microphone input.
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The LK-90TV uses a USB-B port, similar to older printer cables, for PC connectivity, indicating compatibility with widely available cables.
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User experience

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Owners note the keyboard's ports resemble older technology, likening the USB port to an Ethernet or landline connector.
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Setup and maintenance

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Owners have repurposed USB-B cables from other devices, such as microphones, for connecting the LK-90TV to a PC.
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Using a fresh set of batteries or jiggling the power connector can help resolve freezing issues, indicating potential power supply or connection problems.
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Cleaning the processor connections with alcohol may resolve unresponsiveness caused by corrosion, a common issue for long-term owners.
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Build quality

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Broken solder connections on the DC power jack are a frequent issue, suggesting the need for careful examination of the power input component.
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3.0 out of 5

Based on 1 Review and 3 Ratings

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supernintendo64

516

almost 9 years ago

Good Beginner's Item, and Not Much Else

I was already an avid piano player when I decided to pick this up from Goodwill for $30 so I could practice privately in my room. It's a good learning tool, but that's it. It's got over 200 tones but none of them sound very good (which is a given seeing how this keyboard is clearly meant for beginners). There's a sing along function that I never use and you can plug in a sustain pedal. You can also connect it to a television set with a special composite cable, but mine didn't come with the cable so I never tried this. It does, however, have USB MIDI functionality, but it's a pain to set up on a modern computer. When I'm not practicing on it, I pretty much use this keyboard as a MIDI controller. There's also a bunch of songs on it that you can learn (but I never do). Also, the keys light up.

Overall, if you want a cheap keyboard to practice on or if you need a cheap MIDI controller (and if you are computer-literate enough to get it set up correctly), this is a good option. It's also a good toy for your kids if they want to learn piano. I wouldn't use this on any studio recordings (unless you're really creative).