[Solved] Vestel 17IPS72 Powerboard Diagnostic: No Standby Light, TV Won't Turn On

Look for obvious signs of damage such as burnt components, cracks, swollen capacitors, and signs of overheating or burns on printed traces.

Capacitor Test: Use a multimeter to check the capacitors for breakdowns and for normal capacity. Remember to discharge the capacitors before measurement. When checking the capacity, unsolder the entire terminal or one leg.

Check fuses and resistors: Check that fuses are not blown, that resistors are not damaged and that their values are within specifications.

Semiconductors: Test diodes, transistors and integrated circuits using a multimeter in diode testing and resistance mode to ensure they are not shorted or open.

Voltage Measurements: If the board is safe to connect, check the output voltages. Make sure all voltages are present and meet the requirements of your TV.

Check the continuity of printed traces, especially in places where overheating may have occurred.

If any of the elements is damaged, replace it with a new one with appropriate parameters.

I am looking to see if someone can give me some help in the right direction with my TV repair. I tinker with electronics, but this one is new to me and looking to find where to start. I have a Vestel 17IPS72 powerboard from my TV, the TV had no power and no standby light, so I stripped the board out the TV and wondered how I would start looking for the problem. I can solder and I have a multimeter. [img-0]

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I would like to throw an update in case anyone comes across this in the future. I found this by following a YouTube video.

The fuse was blown (I was testing the wrong fuses) which in turn blew the varistor (which is a power surge protector). So I must have had a power surge somehow although my extension cord is rated against such things. It's a very common problem with these boards.


As you'll see from the components circled, you have to check the brown fuse from the bottom.

Fuse blown, followed YouTube video and discovered fuse and varistor needed to be replaced.