SUNSHINE TB-08 Ultra Digital Thermal Camera, 4-Inch Screen

A small thermal screen makes it hard to tell which of two neighboring capacitors is the warm one. The SUNSHINE TB-08 Ultra shows the board's heat on a 4-inch screen, giving a larger view when you're hunting a short.

The listing describes digital infrared imaging that shows temperature differences across components and a handheld design. It doesn't give the sensor resolution, measurement range, battery, connectivity or package contents.

When it saves time

• A shorted rail with dozens of capacitors.

• Abnormal drain with no visible damage.

• A failing chip that overheats under load.

• Leakage traced after liquid damage.

Working method

Connect a DC supply with a current limit and inject voltage into the suspect line. Watch the screen for the first hotspot, then compare it with similar parts nearby. A schematic or board view helps confirm which part you're looking at before removal.

Of the SUNSHINE thermal cameras listed, the TB-08 Ultra offers the stated screen size. Ask the seller for resolution before buying, because screen size alone doesn't tell you how fine the thermal detail will be.