Why is a power supply better than testing with a battery?

Because it shows you the current draw and lets you limit it. Current draw identifies a short or an open before you probe anything, and a current limit stops a shorted board destroying itself while you work.

What voltage do I set for an iPhone board?

Around 3.8 V to stand in for the battery. Set a modest current limit first and raise it only once you know the board is not shorted.

Do I need boot cables as well?

Yes — a cable to connect the supply to the phone's battery connector. Some supplies include them; tell us your models and we will confirm what you need.

LB USB 1 IN 8 POWER SUPPLY CABLE

Name: LB USB 1 IN 8 POWER SUPPLY CABLE
Brand: LB
SKU: LB-8-USB
Price: 1700 PKR
Availability: InStock

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LB USB 1 IN 8 POWER SUPPLY CABLE.

Rs 1,700

LB USB 1 IN 8 POWER SUPPLY CABLE. • Current draw reading that identifies shorts and opens before you probe • Adjustable current limit protects a shorted board…

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LB USB 1 IN 8 POWER SUPPLY CABLE.

Key features

Current draw reading that identifies shorts and opens before you probe
Adjustable current limit protects a shorted board from further damage
Powers a board outside the chassis for diagnosis

What this is used for

Diagnosing short circuits from current draw
Powering a board outside the chassis
Verifying a repair before reassembly

Who it's for

Board-level repair technicians.

Manufacturer description

LB USB 1 IN 8 POWER SUPPLY CABLE. • Current draw reading that identifies shorts and opens before you probe • Adjustable current limit protects a shorted board from further damage • Powers a board outside the chassis for diagnosis Compatible with: Phone logic board diagnosis and repair.