Complete Buying Guide and Benefits
In today’s world, Direct-to-Home (DTH) television services are one of the most widely used entertainment mediums. From news to sports, movies to educational content, DTH has become a must-have in every household. But what happens when your DTH set-top box suddenly stops working because of a power issue?
Most of the time, the culprit is the DTH power supply board. Instead of replacing the entire set-top box, you can simply replace the power supply board at a fraction of the cost. That’s where the AC DTH Power Supply Board comes in – a reliable, affordable, and efficient solution to get your DTH working again.
What is an AC DTH Power Supply?
An AC DTH Power Supply is a Switch Mode Power Supply (SMPS) circuit board designed to convert AC input voltage (220V) into the required DC output voltages used by the DTH set-top box. It ensures that all internal circuits of the DTH receiver get stable and safe power for smooth operation.
Instead of throwing away your DTH box or paying high service charges, replacing the faulty SMPS board restores your device to working condition quickly.
Key Features
✅ Input Voltage: 220V AC
✅ Output Voltage: Multi-output DC via 6-pin header (+5V, +12V, Gnd, +3.3V)
✅ Switch Mode Circuit: Highly efficient SMPS design with no heavy transformer
✅ Protection: Built-in over-voltage and short-circuit protection
✅ Compatibility: Works with most DTH set-top boxes (Dish TV, Tata Play, Airtel DTH, Videocon, etc.)
✅ Cost Effective: Affordable replacement option compared to buying a new set-top box
Technical Specifications
| Feature | Details |
|---|---|
| Input Voltage | 220V AC (Standard) |
| Output Voltage | +5V, +12V, +3.3V (DC) |
| Circuit Type | Switch Mode Power Supply (SMPS) |
| Connector Type | 6-Pin Header |
| Protection | Short Circuit, Overload, Overvoltage |
| Dimensions | Compact board size (easy to fit) |
| Usage | DTH Set-Top Box Power Replacement |
Benefits of Using a Replacement Power Supply Board
- Affordable Solution:
- Much cheaper than replacing the entire DTH receiver.
- Easy to Install:
- Simple plug-and-play installation – just match the connector and screw points.
- Reliable Performance:
- Provides stable voltage output to prevent damage to internal circuits.
- Saves Time:
- Quick repair, no need to wait for technician visits.
- Eco-Friendly:
- Reduces electronic waste by repairing instead of discarding the device.
Common Problems Solved by Replacing DTH Power Supply
- No Power Issue: Set-top box not turning on at all.
- Red Light Blinking: Power board not delivering correct voltage.
- Frequent Rebooting: Voltage fluctuation causing automatic restart.
- Burnt Smell or Sparks: Damaged components on old SMPS board.
By replacing the faulty board, all these issues are usually resolved.
Installation Guide (Basic Steps)
⚠ Safety First: If you are not experienced with electronics, get a technician to install it.
- Turn Off & Unplug: Switch off the DTH box and unplug from power.
- Open the Set-Top Box: Remove the screws carefully and take off the cover.
- Disconnect Old Board: Detach the 6-pin connector and unscrew the power supply board.
- Install New Board: Place the new board in the same position, connect the pins properly.
- Test Before Closing: Plug the DTH box into power and check if it starts working.
- Reassemble: If everything works, close the cover and tighten the screws.
Comparison: DTH Power Supply Board vs Buying New Set-Top Box
| Aspect | Replace Power Board | Buy New Set-Top Box |
|---|---|---|
| Cost | Very Low (₹400–600) | High (₹1500–2500+) |
| Installation | 5–10 minutes | Requires activation & setup |
| Downtime | Very Low | May take 1–2 days |
| Warranty | 3–6 Months (Board) | 1 Year (New Box) |
| Eco-Friendly | ✅ Yes | ❌ Adds to e-waste |
Maintenance Tips for Long Life
- Always use a good quality surge protector to prevent damage during voltage spikes.
- Avoid exposing the DTH box to moisture or direct sunlight.
- Keep the ventilation slots dust-free to avoid overheating.
- Turn off the DTH when not in use for long durations.