Consumer Electronic Products and Systems Quiz W5

What is the main purpose of a television?

• To project holographic images

• To display text messages

• To broadcast radio programs

• To transmit visual images and sound

What is the first step to take if a television is not showing any sign of life?

• Check the voltage across the AC power input connector

• Replace the power supply unit

• Inspect the circuit board for visible damage

• Reset the television settings

Which component may cause the B+ to go to the ground directly and block the power supply from starting?

• Resistor R521

• Horizontal output transistor (HOT)

• Filter capacitor C403

• Fly back Transformer

What are the possible problems if there is no voltage at the base of the Chopper Transistor?

• The main capacitor has failed

• The startup resistor has opened

• The chopper transistor has shorted collector-emitter

• The chopper transistor has shorted base-emitter

What is the purpose of the 19 volts output in a television?

• To supply the microprocessor

• To supply the vertical circuit

• To supply the RGB circuit

• To supply the audio circuit

What is the function of the dummy load in a television circuit?

• To discharge the main capacitor

• To test the voltage at the base of the chopper transistor

• To regulate the B+ supply

• To supply power to the audio circuit

What is the purpose of the 13 volts output in a television?

• To supply the microprocessor

• To supply the vertical circuit

• To supply the RGB circuit

• To supply the audio circuit

What is the function of the 5 volts output in a television?

• To supply the audio circuit

• To supply the microprocessor

• To supply the vertical circuit

• To supply the RGB circuit

What is the purpose of the 109 volts output in a television?

• To supply the vertical circuit

• To supply the fly back with required voltage

• To supply the RGB circuit

• To supply the audio circuit

What is the function of the 24 volts output in a television?

• To supply the microprocessor

• To supply the RGB circuit

• To supply the vertical circuit

• To supply the audio circuit