RF4 RF-3005Pro DC Power Supply 30V 5A

Professional DC Power Supply 30V 5A for Mobile Repair Benches

The RF4 RF-3005Pro is a professional DC power supply 30V 5A built for the repair bench. It delivers 0–30V and 0–5A at 150W, with an LCD digital display and continuous voltage and current adjustment. You power a dead phone board directly, read the current draw, and decide your next move before you touch the iron. Repair shops, service centers, and training labs in Pakistan use this class of supply daily for hardware fault diagnosis. RF4 designed the RF-3005Pro for that job.

Current Control That Shows You the Fault

A dead phone rarely tells you why it died. The supply does. Set the voltage to the board’s battery rail, raise the current limit, and watch the display. A board that draws nothing points to a broken power path. A board that pulls current at once and holds it points to a short. The RF-3005Pro switches between A and mA ranges automatically, so the small draws of a half-alive board stay readable. Voltage and current adjust continuously across the full range, so you set a safe ceiling before you connect the leads. Charging issue boards, boot loop issue boards, and hang on logo boards each show their own current behavior at power-up. You learn to read those patterns fast.

Protection Modes for Risky Power-Ups

The RF-3005Pro includes a complete overload protection circuit, and overcurrent protection works in two modes. In the first mode, the supply cuts output on overcurrent and returns to normal power by itself. This is the everyday protection mode. In the second mode, a single overcurrent event stops the output. The indicator flashes and shows the overcurrent value, and the output stays off until you press the button again. Use the second mode when you chase a shorted component. It stops repeated power-ups from cooking a board that already has a hardware fault. One press of the Output button switches power on or off, so you connect your leads first and apply power after.

Where It Fits in Your Repair Workflow

You power up a board before every serious repair and after it. Before you start IC change karna, the supply confirms the fault and shows how much current the board pulls. After the new IC sits on the pad, the same power-up confirms the fix without a battery. Dead after flash cases also start here. You check whether the board draws current before you blame the software. Pair the supply with a multimeter to trace rails, a microscope to inspect the board, and a hot air station or soldering station to rework the faulty part. A PCB holder keeps the board steady while you probe. When the fault sits on the software side, ISP pinout tools and test boxes take over from there. The RF-3005Pro also powers 5V devices and laptop boards, so one unit covers more than phone work.

Built for Daily Workshop Use

The RF-3005Pro runs on 110V or 220V input, so the same unit works across different workshop setups. The lock function protects your settings. Long-press the V knob until the lock indicator lights, and every knob and button except the power switch stops responding. Long-press again to unlock. You stop a stray elbow from raising the voltage on a live board. The unit uses a 220V/5A fuse and a 110V/10A fuse. Always unplug the power cord before you replace a fuse. Electronic production lines, laboratories, and universities use this class of supply too, which makes it a solid choice for technician training benches.