Polaroid flm-373b no sound pic ok.

[crdz66]

HI EVERYONE.

I NEED YOU OPINION WHAT CAUSE DOESN'T HAVE SOUND.

THIS LCD TV HAVE PICTURE BUT NO SOUND FROM SPEAKERS.
THE HEADPHONE CONNECTOR PRODUCE SOUND.
I TRY HDMI, COAXIAL AND COMPONENT CONNECTORS.

I SAW A YOUTUBE VIDEO ABOUT THIS PROBLEM, BUT THE RESISTOR IS OK.
SHOW 9.7 OHMS.

https://www.youtube.com/watch?v=b-bwX8_Ys70

I REPLACE THE MAINBOARD FROM EBAY (USED ONE) BUT STILL NO SOUND.
THE SPEAKERS WAS TESTED AN ARE OK.

WHAT ELSE CAN CHECK?

THANKS.

[ReeceyBurger123]

Re: Polaroid flm-373b no sound pic ok.

Checked the audio supply voltage ? Checked the speakers ?

[crdz66]

Re: Polaroid flm-373b no sound pic ok.

The speaker was checked. are ok.
How check the audio supply voltage?
come from power supply?

[crdz66]

Re: Polaroid flm-373b no sound pic ok.

Update: Next to Audio Amplifier -> Filters -> Capacitors
I have dc voltage. .037 v after one capacitor and .009 after the another one.
Supposed Need to have ac ??

[crdz66]

Re: Polaroid flm-373b no sound pic ok.

I finally fixed.
I notice couple joints on power board on no good conditions.
I apply new solder and bingo!!
Now is working good.

Thanks to everybody.

[ReeceyBurger123]

Re: Polaroid flm-373b no sound pic ok.

Dam only just seen wish I could have been more assistance, but awesome

[crdz66]

Re: Polaroid flm-373b no sound pic ok.

Thanks ReeceyBurger123.

[ReeceyBurger123]

Re: Polaroid flm-373b no sound pic ok.

No worries glad its working now