Quick Answers to Common TV Decoder Problems
Need help right now? Call or WhatsApp Refitec Kenya: 📞 0704 843 613
| Problem | Quick Answer |
|---|---|
| Decoder shows “No Signal” | Check your dish alignment or cable connections. If the problem persists, the LNB or tuner may be faulty. |
| Decoder won’t turn on | Check the power adapter and fuse. A blown fuse or faulty power board is the most common cause. |
| Scrambled or pixelated picture | Usually caused by a weak signal, dirty card reader, or faulty tuner. |
| Smart card not reading | Clean the card contacts gently. If still undetected, the card reader slot needs replacement. |
| Decoder freezing or rebooting | Often a software/firmware issue or overheating. A firmware flash or ventilation fix usually solves it. |
| No sound but picture is fine | Audio output board or HDMI port may be damaged. |
| Decoder not finding channels | Your LNB may be degraded or the dish may need realignment. |
| HDMI port not working | The HDMI socket may be loose or damaged and needs resoldering. |
📍 About Refitec Kenya
Refitec Kenya is a trusted electronics repair company based in Kenya, specialising in the diagnosis, repair, and servicing of all major TV decoder brands including:
- DSTV / MultiChoice
- StarTimes
- Zuku
- GoTV
- Free-to-Air (FTA) decoders
- Streaming decoders (Android TV boxes, etc.)
Our certified technicians use professional tools and genuine spare parts to get your decoder back to full performance — fast and affordably.
📞 Call or WhatsApp: 0704 843 613
📖 Detailed Guide: TV Decoder Problems & How We Fix Them
1. Decoder Shows “No Signal” or “No Satellite Signal”
What it means: Your decoder is not receiving a signal from the satellite dish or antenna.
Common causes:
- Misaligned satellite dish
- Damaged or corroded coaxial cable
- Faulty LNB (Low Noise Block) on the dish
- Internal tuner damage
How Refitec Kenya fixes it:
- We perform a full signal-path inspection from the dish down to the decoder.
- We test the LNB signal strength using a satellite meter.
- We inspect coaxial cables for cuts, water ingress, or corrosion and replace where necessary.
- If the LNB is faulty, we replace it with a compatible unit.
- If the internal tuner is damaged, we desolder and replace the tuner IC on the mainboard.
2. Decoder Won’t Turn On (Dead Decoder)
What it means: The decoder shows no power light and does not respond.
Common causes:
- Blown fuse on the power board
- Faulty power supply unit (PSU)
- Dead capacitors on the power board
- Damaged power adapter/transformer
How Refitec Kenya fixes it:
- We inspect the power adapter output voltage using a multimeter.
- We open the decoder and check the internal fuse — a blown fuse is often the quickest fix.
- We test capacitors and voltage regulators on the power board.
- We replace the faulty power board components or the entire PSU if necessary.
- We perform a full power-on test before returning the unit.
3. Scrambled, Pixelated, or Poor Picture Quality
What it means: The image on your TV is blocky, frozen, or distorted even though the decoder is on.
Common causes:
- Weak satellite signal
- Degraded LNB
- Faulty HDMI or AV cable
- Dirty or misread smart card
- Failing video output chip
How Refitec Kenya fixes it:
- We measure signal strength and quality levels (dB and %) to determine if the dish/LNB is the source.
- We clean or replace the smart card reader if the card is not reading properly.
- We test HDMI and AV outputs on an oscilloscope.
- We replace the video output IC or resolder loose joints if the problem is internal.
4. Smart Card Not Detected or “Card Error”
What it means: Your decoder cannot read your subscription smart card.
Common causes:
- Dirty card contacts
- Bent or broken card pins in the card reader
- Faulty card reader slot
- Rare: corrupt card (requires replacement from your provider)
How Refitec Kenya fixes it:
- We clean the smart card and card reader contacts using isopropyl alcohol.
- We use a microscope to inspect the reader pins for damage or bending.
- We replace the card reader module if pins are broken or the slot is worn out.
- We advise you on contacting your service provider (DSTV/StarTimes/GoTV) if the card itself is faulty.
5. Decoder Freezing, Crashing, or Randomly Rebooting
What it means: The decoder restarts on its own or hangs during use.
Common causes:
- Outdated or corrupt firmware
- Overheating due to blocked vents or a faulty cooling fan
- Failing RAM or flash memory chip
- Unstable power supply
How Refitec Kenya fixes it:
- We check the decoder’s internal temperature and clean dust from all vents.
- We replace or repair the cooling fan if faulty.
- We flash the latest official firmware onto the decoder using professional flashing tools.
- We test RAM and flash memory chips and replace if defective.
- We verify that the power supply is outputting stable voltage.
6. No Sound / Audio Problems
What it means: Your decoder produces a picture but no audio, or has distorted sound.
Common causes:
- Damaged audio output IC
- Faulty or loose HDMI cable
- Broken 3.5mm audio jack or RCA outputs
- Software/firmware audio glitch
How Refitec Kenya fixes it:
- We test all audio output ports individually.
- We check and replace HDMI connectors if they are physically damaged.
- We inspect and replace the audio output chip if it has failed.
- We perform a firmware reset/reflash to rule out software audio bugs.
7. Decoder Not Finding Channels (Channel Scan Fails)
What it means: After a channel scan, no channels are found or very few are detected.
Common causes:
- Dish out of alignment
- LNB frequency mismatch
- Wrong DiSEqC or satellite settings in the decoder menu
- Faulty LNB or coaxial cable
How Refitec Kenya fixes it:
- We verify your dish is pointed at the correct satellite (e.g., IS20/IS17/SES-5 for East Africa).
- We check and reconfigure DiSEqC settings and LNB frequency settings.
- We test and replace the LNB if output frequency is incorrect.
- We perform a full factory reset and guided channel scan after repairs.
8. HDMI Port Not Working
What it means: The decoder does not display on TV when connected via HDMI, but may work via AV cables.
Common causes:
- Physically damaged HDMI socket (bent or broken pins)
- HDMI port detached from the PCB
- Faulty HDMI controller IC
How Refitec Kenya fixes it:
- We inspect the HDMI port under magnification for damaged pins.
- We resolder HDMI port connections using hot air rework stations.
- We replace the HDMI port entirely if the socket is beyond repair.
- We test HDMI output on multiple resolutions (720p, 1080p) before sign-off.
💡 Why Choose Refitec Kenya for Decoder Repair?
- ✅ Experienced technicians with years of hands-on decoder repair
- ✅ All major brands serviced — DSTV, StarTimes, GoTV, Zuku, FTA & more
- ✅ Genuine spare parts used in all repairs
- ✅ Fast turnaround — most repairs completed same day or next day
- ✅ Transparent pricing — you get a quote before any work begins
- ✅ Warranty on repairs for your peace of mind
📞 Contact Refitec Kenya Today
Don’t let a faulty decoder disrupt your entertainment or work.
Call or WhatsApp: 0704 843 613
Our team is ready to diagnose and fix your decoder quickly and affordably. Reach out today for a free consultation!
Refitec Kenya — Your Trusted Electronics Repair Partner in Kenya.