Liv Electronics

03/01/2026

Starting this year, JSS students will take part in the Kenya Science and Engineering Fair (KSEF), where they will design and present innovative models for competition.
For electronics-related projects, we, Liv Electronics Levi Wafula Esd understand that many students may be beginners and therefore need proper guidance to get started.
We support learners by introducing them to available technologies used to solve real-life problems, while also providing the required electronic components for their projects.
We specialize in coaching students to develop programmable systems that automate processes which were previously done manually — Process Automation.
📞 For training, coaching, and enquiries:
0748 225 587

08/10/2025

WOOFER REPAIR GUIDE
LESSON 3.1: THE PREAMPLIFIER FILTER

The Preamplifier Filter is a key part of woofer’s sound system. Its main function is to filter the input sound signals, separating them into different frequency ranges before sending them to the amplifier section.

In most woofer designs, one audio channel (commonly Left – L) is filtered to produce Bass (Low frequency) output, while the other channel (commonly Right – R) is filtered to produce Treble/High (High frequency) output.
👉 However, this isn’t a fixed rule — the roles of L and R can be interchanged, depending on the circuit design or manufacturer’s preference.

Here’s how it works practically:

1. Signal Input (L & R):
The sound signal from the MP3 decoder enters the preamplifier through two input lines — Left and Right.

2. Filtering Section:
One channel passes through a Low-Pass Filter, allowing only Bass frequencies to reach the subwoofer amplifier.
The other passes through a High-Pass Filter, letting only Treble and Mid frequencies pass to the satellite speaker amplifier.

The filtering section may use discrete electronic components such as resistors, capacitors, diodes, and transistors to form analog filters.

In modern woofer designs, this section is often built around dedicated preamplifier ICs such as JRC4558, LM358, TL072, NE5532, or LM324, which offer cleaner sound and higher stability.

3. 🔊 Signal Output:
The result is two distinct signal lines — one for Bass and one for Highs/Treble — ready for amplification.

4. Power Supply:
The preamplifier filter operates on low DC voltage, usually between 5V and 15V, depending on the woofer’s design.
Some preamp filter units use a single power supply (positive and ground), while others use a dual/split power supply (positive, negative, and ground).
Dual power designs are common in high-performance systems because they allow the output signal to swing symmetrically around zero volts, improving sound quality and reducing distortion.

5. Tone Control:
Tone, volume, and gain are adjusted either digitally (via MP3 decoder buttons) or analog (via potentiometers). Analog tone controls allow manual variation of Bass, Treble, and Master Volume for custom sound shaping.

🎯 The preamplifier filter defines the woofer’s sound character — bringing out the deep bass and clear highs that make music come alive.

The Tech Ahead of You is Always Liv Electronics.

08/10/2025

Hi-Fi Stereo Audio Amplifier on our bench.

08/10/2025

08/10/2025

We had this Unitech 43" Smart TV brought in with a backlight problem — it could power on, but the screen remained dark. The owner was concerned it might need a new screen, but after a careful check, the issue was traced to the LED backlight system.

We replaced the faulty strips, tested the brightness levels, and finally restored it to full display glory! 🌟
At Liv Electronics, every repair is done with precision, passion, and care — because your device deserves more than just a fix, it deserves a revival.

📍 Vetinary Junction – Swara Business Centre Room 07, Kitale Town
📞 Call/WhatsApp: 0748225587

08/10/2025

Earlier this week, a Skyworth 32” Smart TV came in completely silent — no sign of life. The customer looked genuinely worried; this was more than just a TV — it was their daily companion for news, movies, and family moments.

After careful diagnosis, we traced the issue to a power supply fault. Today, we finally coupled it back, and guess what? The screen lit up beautifully again! ✨

Moments like these remind us why we do what we do — not just to fix electronics, but to restore the joy and connection they bring into people’s lives.

📍 Liv Electronics – Vetinary Junction, Swara Business Centre Room 07, Kitale Town
📞 Call/WhatsApp: 0748225587

06/10/2025

Introducing Screen Panel (T-CON) Repair Services

Ever powered your TV and realized the backlight is on but no picture, or maybe you’re seeing vertical lines, a white screen, or your TV moves in slow motion like it’s struggling to keep up? 😟

Before you panic or think of replacing the entire screen — pause a moment.
In most cases, your screen panel (T-CON board) is simply faulty, not dead. At Liv Electronics , we now professionally repair and revive screen panels, saving you the high cost of screen replacement.

Whether it’s:
✅ No display but backlight working
✅ White or half-white screen
✅ Vertical or horizontal lines
✅ Delayed (slow-motion) pictures

We understand how heartbreaking it feels when a TV you love suddenly goes blank — that moment of silence in your living room. But don’t worry, we’ve brought many screens back to life, clean and professional.

✨ Before you think of a new screen, bring it to us first. Chances are high — it can be fixed.

📍 Liv Electronics – Vetinary Junction, Swara Business Centre Room 07, Kitale Town
📞 Call/WhatsApp: 0748225587

03/10/2025

Good Morning from Liv Electronics!
We’ve started off our day with an Electric Kettle repair.

The kettle had refused to power on — a common issue that often traces back to the thermostat or power connector. With clean troubleshooting and a neat fix, it’s now back to service, ready to boil water as expected.

At Liv Electronics, every new day is another chance to restore your appliances with care and professionalism.

📍 Kitale Town – Vetinary Junction, Swara Business Centre, Room 07
📞 0748225587

29/09/2025

We started off the new week,here at Liv Electronics with what we call a minor surgery on a Bluetooth speaker brought in by our client. The power button had strippesld off from the ground and fallen off — the customer revealed it had already been repaired upto three times before and was worried it might fail again.

Instead of doing the same fix again, we went one step smarter:
👉 We swapped the roles of the buttons. The firm Play/Pause button was remapped to serve as the power button, while the original power button was reassigned to handle the play/pause function — which can also easily be controlled from the phone.

This way, the speaker got a long-lasting solution, and the customer left with peace of mind. 💯

To pull this off, one needs a good understanding of how push button switches work — and that’s exactly what we specialize in.

📍 Location: Kitale Town – Vetinary Junction, Swara Business Centre Room 07
📞 Call/WhatsApp: 0748225587

✨ The Tech ahead of you is always Liv Electronics.
Levi Wafula Esd

22/09/2025

Earlier today, we had the honor of fixing a 55-inch Vision TV right at our customer’s home. The issue? A backlight failure — sound was fine, but the screen stayed dark.

We rolled up our sleeves, diagnosed the backlight system, and restored the display back to life — all from the comfort of the client’s living room.

At Liv Electronics, we don’t just wait for you to come to us — we bring professional repair right to your doorstep.

📍 Kitale Town, Vetinary-Swara Business Centre Room 07
📞 0748225587
✨ The Tech ahead of you is always Liv Electronics.

20/09/2025

✨ The Art of Good Soldering

At Liv Electronics , we believe a repair is only as good as the solder that holds it together.
Good soldering is not just about joining two points — it’s about strength, neatness, and reliability.

A clean, shiny joint means current flows smoothly, no interruptions, no future stress.
A messy joint might work today but fail tomorrow — and that’s not what you deserve.

Every time we pick up a soldering iron, it’s not just fixing a circuit; it’s restoring trust, function, and life to your gadget.

Because to us, every joint matters, just like every customer does.

📍 Kitale Town, Vetinary-Swara Business Centre Room 07
📞 0748225587
💚 The Tech ahead of you is always Liv Electronics.

20/09/2025

When a device fails, it’s not just about wires, chips, or circuits — it’s about the moments it carries.
That woofer that makes your family gatherings lively, the TV that brings people together, the phone that connects you to loved ones — they all hold a piece of your daily life.

That’s why we handle every repair with passion, precision, and care. Because we know it’s not just electronics — it’s your music, your memories, your connection, your joy.

💚 The Tech ahead of you is always Liv Electronics

📍 Location: Kitale Town, Vetinary-Swara Business Centre Room 07
📞 Call/Text/WhatsApp: 0748225587