toshiba 24 inch lcd tv have no sound picture ok problem solution step by step







 

fallow this step if you have face this problem in Toshiba lcd TV

if any input audio is not come like av,usb ,hdmi,vga,etc then fallow this step

    1. Fast check speaker it show 10 ohm to 13 ohm it means speaker is ok .if it not show any ohm replace speaker.
  1. if speaker is ok then check ic operating voltage of ic .ic operating voltage is given it data sheet.if ic voltage is not ok then check ic operating voltage were is come .
  2. if  ic voltage ic ok then check ic output voltage in coil is given near audio connector . it show half voltage at the input voltage
  3. if ic output voltage  is come check mute pin voltage is high or low it is mention in data sheet
  4. then after problem is not solve replace ic
  5. after replacing audio ic then problem is not solve .then check audio input line from av connector to main system ic .if it is ok then change system ic
  6. if speaker is ok then check ic operating voltage of ic .ic operating voltage is given it data sheet.if ic voltage is not ok then check ic operating voltage were is come .
  7. if  ic voltage ic ok then check ic output voltage in coil is given near audio connector . it show half voltage at the input voltage
  8. if ic output voltage  is come check mute pin voltage is high or low it is mention in data sheet
  9. then after problem is not solve replace ic
  10. after replacing audio ic then problem is not solve .then check audio input line from av connector to main system ic .if it is ok then change system ic
  11. if speaker is ok then check ic operating voltage of ic .ic operating voltage is given it data sheet.if ic voltage is not ok then check ic operating voltage were is come .
  12. if  ic voltage ic ok then check ic output voltage in coil is given near audio connector . it show half voltage at the input voltage
  13. if ic output voltage  is come check mute pin voltage is high or low it is mention in data sheet
  14. then after problem is not solve replace ic
  15. after replacing audio ic then problem is not solve .then check audio input line from av connector to main system ic .if it is ok then change system ic