Turn tv on hear a click then another click. Nothing after that. Toshiba projection Television Model 46H84

Hi,

The initial click that you hear could very well be a relay engaging. For some reason, the built-in protection circuitry has detected a fault and has decided that to prevent further damage, the system would be shut down, this would be the second click, the relay disengaging.

Diagnosis and eventually repair would require a fair familiarity of electronic components and circuitry, definite use of a DVM and even a soldering iron. A service manual or at the very least a schematic diagram with voltage readings would make the checking relatively easy. Should you be uncomfortable going through this route, then perhaps you would be better off seeking the services of a qualified professional.

If you are considering a DIY (do-it-yourself), foremost to check would be for the presence of the correct voltages from the power supply board. Often defective components could be visually checked such as blistered/bulging capacitors, burnt resistors while others would need forward and reverse bias testing of regulator/transistors.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Variety of power supply or startup problems can result in this or similar behavior. Possibilities include:

• Lack of startup horizontal drive -The main regulator is cycling on overvoltage due to lack of load.
  
• Excessive load or faulty power supply cycling on its overcurrent protection circuit.
  
• High voltage shutdown, or some other system detecting an out of regulation condition. However, in this case, there should be some indication that the deflection and HV is attempting to come up - momentary whine, static on the screen, etc.
  
• A dried up main filter capacitor or other filter capacitor in the low voltage power supply that is producing an out-of-regulation condition until it warms up. A bad filter capacitor on the output of a series regulator may result in excessive voltage and subsequent shutdown.
  
• A problem with the microcontroller, relay or its driver, or standby power supply.

Plz send your tv for servicing