Every dead phone on your bench starts with the same question: what does the board draw when you power it? The Sunshine P1 Pro Max answers that with a regulated main output, a separate startup output and a waveform display that shows how voltage and current behave while you work. You stop guessing at hardware faults and start reading them.What You Get on the BenchThe Sunshine P1 Pro Max is an intelligent regulated power supply built for electronic and mobile repair work. The main output covers 0–30V and 0–20A. The startup power output covers 0–8.4V and 0–6A. Total output power reaches 250W, and the unit accepts 100V–240V at 50/60Hz. You set voltage and current on the digital display and watch the live readings while the board runs.The power meter function tracks power consumption in real time. The unit also samples individual charging waveforms, so you see the shape of the charging behaviour instead of only a number. That matters when a customer complains about a charging issue and the phone charges on and off.Where It Fits in Your Repair WorkflowStart with diagnostics. Connect the board without its battery, set a safe voltage and current limit, and watch what the board pulls. A board that draws heavy current and never boots points you toward a short circuit. A board that draws almost nothing points you toward a missing rail or a dead section. Once you know which one you face, you move to the next tool: a multimeter to trace the line, a microscope to inspect the area, and a hot air station or soldering station to lift the suspect component. After an IC change karna job, you power the board again on the same supply and compare the readings against what you saw before.The startup output suits boards that sit on your bench without a battery. You feed the board at the voltage and current you choose and watch the display while it tries to start. If a phone hang on logo or shows a boot loop issue, the live readings give you extra information before you decide between a software fix and a hardware repair.Burn-In, Battery Test and Spot WeldingThe Sunshine P1 Pro Max supports a burn-in function. You run a repaired board or component under power and check its stability over time before you hand the phone back. That step catches weak repairs early and protects your reputation with repeat customers.The battery test function lets you check battery performance and health. Pair it with the waveform display and you can separate a worn battery from a charging-circuit problem.The built-in battery spot welding function supports replacing or repairing lithium batteries and electronic components. You weld tabs on the same unit that powers your boards, so one device covers two jobs on a crowded repair bench.QC and PD Fast Charging PortThe unit includes a QC and PD fast charging port with 18W output. You can test how a phone responds to fast charging while the waveform display shows what happens. When a customer says the phone charges slowly or not at all, you compare the behaviour on this port against the normal charging path.Who Gets the Most ValueRepair shop owners who want fewer separate devices on the table will value the combined functions. Technicians who handle dead phone and short-circuit work every day will use the main and startup outputs the most. Service centers that replace lithium batteries will use the spot welding and battery test functions. Training institutes can use the waveform display to show students how a board behaves under power.Pairing It with the Rest of Your SetupA power supply does not work alone. Pair the Sunshine P1 Pro Max with multimeters for tracing, microscopes for inspection, PCB holders for stable board handling and reballing kits for CPU and IC work. When you move into eMMC and UFS repair, keep ISP pinout tools, eMMC programmers and UFS adapters next to it. For dead after flash cases, the steady supply helps you watch what the board does while you work through software marna or box chalana steps.Buying Decision NotesCheck the specifications before you order. The main output tops out at 30V and 20A, the startup output at 8.4V and 6A, and total output power sits at 250W. If your daily work includes board-level diagnosis, battery work and fast-charging checks, this unit covers all three. If you only need a basic bench supply, a simpler model will cost less.