When you're running a busy repair counter, your power supply needs to keep up with everything that lands on your bench — dead phones, charging issues, hardware faults on PCBs, and quick diagnostic checks before you commit to an IC change. The Sunshine P4 PRO handles all of that with a 30V/6A high-frequency output that gives you precise, stable voltage and current control for mobile phones, tablets, and PC motherboard repair.
You get a 0-30V voltage range and 0-6A current range, with output resolution down to 10mV and 1mA. That level of control matters when you're hunting a short on a board or trying to wake up a phone that's dead after flash — small steps in voltage tell you exactly where the current draw changes. The setting accuracy stays within 0.5%+20mV and 0.5%+5mA at room temperature, and the response time is rated at 100ms or faster, so you see current spikes the moment they happen instead of missing them on a slow display.
Four-level memory is one of the features technicians actually use every day. You store four different voltage and current combinations and switch between them instantly — one preset for a phone battery test, another for a fast-charge check, another for board-level diagnostics. You're not retyping values between every job, which saves real time during a busy shift.
The dual-port charging design covers both Type-C and USB-A outputs, and it supports a wide protocol range: PD3.0, PPS, QC2.0, QC3.0, QC3+, AFC, FCP, SCP, and HSCP. That means you can pull up a phone's actual fast-charging voltage and current in real time, which helps a lot when a customer reports a charging issue and you need to confirm whether the device or the charger is at fault. The tool independently samples the charging current waveform, so you're looking at real data instead of guessing from a flat reading.
The HD color screen shows a high-refresh current curve, and the P4 PRO connects to a PC through host computer software for screen projection and curve logging. If you're training junior technicians or want to keep a record of a tricky repair, you can show the live curve on a bigger screen or save it for later reference. Sunshine also pushes wireless software upgrades to the unit, so new features get added without sending the hardware back.
Protection circuitry on the P4 PRO includes overvoltage, overcurrent, and short-circuit protection layered together, which matters when you're connecting probes directly to a board that might have a hardware fault you haven't identified yet. If something goes wrong on the board side, the supply cuts power before it damages your test setup or the device.
In terms of where this fits in your repair workflow: this is bench-level diagnostic and power-supply equipment, not a programmer or flash box. You'll use it alongside your soldering station, multimeter, and test box — confirming power draw before you commit to a jumper, checking whether a board pulls current at all after a "dead phone" complaint, or verifying charging behavior before you tell a customer it's a software issue versus a hardware one. It pairs naturally with ISP and eMMC workflow tools on the same bench, since power verification is usually step one before software-side troubleshooting starts.
Build size sits at 115×270×165mm with a net weight around 3.8kg, so it's compact enough for a standard repair desk without eating up your whole workspace.
