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Pete
Pete, Electronic Engineer
Category: TV
Satisfied Customers: 15733
Experience:  Over 16 years of experience installing and repairing electronics.
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Customer Question

U there now?
Submitted: 10 months ago.
Category: TV
Expert:  Pete replied 10 months ago.

Hi Don,

There is no fuse for sound.

Check that all replacement capacitors are securely soldered in place and there are no cold solder joints or broken tracks around the soldered area.

Other components nearby may have gotten damaged through thermal shock when the capacitors were being replaced if a lot of heat was applied to the board - check for any visual signs of burning to other components.

Customer: replied 10 months ago.
I have replaced the 6 caps (capxon) in the neighborhood of the sound connectors. It made no improvement. The other caps are Lelon brand. None appear to bad, but...
I do keep an eye out for cold solder joints and cracked traces.
Expert:  Pete replied 10 months ago.

If sound was working ok previously then something has changed...

check the board connections, wiring, etc - perhaps something is loose?

Customer: replied 10 months ago.
Are there voltage points that I could check to make the audio section of the board is powered? I tried to do a factory reset using the Vol down + Input button, but the set did not go into technician mode.
Expert:  Pete replied 10 months ago.

I don't have any schematics to hand for this particular model, however the voltage test points are usually marked on the circuit boards.

Customer: replied 10 months ago.
Is there anyone else here on Just answer that would have schematic?
Expert:  Pete replied 10 months ago.

I will check.

Customer: replied 10 months ago.
Thanks!