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lexsor 32 inch lcd sound but no picture
Problem for Vizio L32 32 in. HDTV LCD Television
32'' Vizio LCD no picture or sound
Best Solution
posted on Nov 05, 2009
Your filter capacitors have popped due to diodes shorting, P-channel FETs shorting from gate-to-drain. Pull-up resistors have changed value and as a result your capacitors have peaked (popped)....so now the tv is in protection mode to prevent further damage to your tv. Take it to your local shop for servicing, or take it back if its under warranty......
The popping noise your heard is either some kind of inductance arcing or a popped capacitor. The tv has low-voltage closed DC power (green light) but theres a DC high voltage shut down. This means the power supply is not feeding high DC voltage to the other circuits. The main board (Processor Interface) is not getting its high-voltage (14-18v) DC to Up-Start its other system controls. Critical Waveforms are not being generated. So the tv's protection circuits are in affect to prevent a fire from starting.
Your power supply needs to be serviced first.
Comments:
Nov 08, 2009
- The tv has No picture and No sound after popping noise right?...........The popping noise your heard is either some kind of inductance arcing or a popped capacitor. The tv has low-voltage closed DC power (green light) but theres a DC high voltage shut down. This means the power supply is not feeding high DC voltage to the other circuits. The main board (Processor Interface) is not getting its high-voltage (14-18v) DC to Up-Start its other system controls. Critical Waveforms are not being generated. So the tv's protection circuits are in affect to prevent a fire from starting.
Your power supply needs to be serviced first.
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