Question about Philips 27PT543S 27" TV

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No sound, no supply B+

No power to audio ic

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  • hearingtears Feb 12, 2009

    philips 27PT54 no sound...perfect picture what happened?

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Check for either an open resistor in the B+ line that feeds the audio amp IC or remove the IC and check for B+. If the IC is shorted, the B+ reading will read low.
Dan

Posted on Mar 18, 2008

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I have a 27" Toshiba television, I'm having problem with the sound. I've changed the sound output but nothing happen. Please help.


Hi
Jennifer Castillo


Here are some possible locations where to look to :
( Since I have no model for your TV or additional details which you have
replaced)

a) switching IC ( these IC switches the TV to Audio Video In)

b) muting circuits ( there could be one )

c) Check the audio out coming from the Jungle IC (also unknown)

d) check the supply lines of the audio IC (could be +12V, typical)

e) Check the headphones out (if available)


If there is an audio Out, connect an external amp to test.

If audio is present , check again for solder joints to main amp.


Use these as a guide in troubleshooting :

Computer Speakers

Your input is the Jungle IC, search on line for datasheet about it.

same with your Switching IC and Audio IC.


On some audio IC, volume control is included on it.

Let us know what you find or needs further assistance.

Oct 02, 2012 | Toshiba Standard (CRT) Televisions

1 Answer

I have konka crt tv ,model number is ks21tk501s,its problem is no sound .i was trying to troubleshoot the audio parts and also changed the memory ic but steel there is no sound


how about the amplifier ic does it work, check the supply voltage. then if you know the pin configuration of the ic, look for the input of the ic then bypass the amplifying section. the audio input connect to the connection going to the speaker out. if you can hear a sound from the speaker that was mean the ic is defective.

Aug 15, 2012 | Standard (CRT) Televisions

1 Answer

I have an rca ctc186/7 series tv and it has no sound. We tried cleaning it, hooking other speakers to it and hooking up a dvd player and still no sound.


Hello

The audio output Ic inside your tv has damaged, or it doesn't get proper voltage. You just open your TV, and locate the audio output Ic. It can be located by following the speaker wires. Usually it will be screwed onto a heatsink. Check the input voltage with the help of a multi meter, af it is there, the Ic is damaged. Replacing it will solve the problem. If there is no voltage, follow the supply track and find out the opened circuit point. Usually a small value resistor, say 0.01Ohms in value, will be connected in series with the power supply to Ic. If it gets opened, there will be no supply to Ic, resulting no sound. If the audio outpu Ic get short this resistor will open. So keep in mind that, if this resistor is opened, there may be a short inside the output Ic, or come capacitors fitted with this supply line, after the reistor. Check the also for any short. keep a keen look at the solderings fo the leges of this output Ic. Some loose, or bad solderings also may be there. Anyway, your TVs audio output section is faulty. Find the reason and rectify it. If audio Ic is found defective, desolder it out from the board, and replace it with a same type and number. Ok

Gopakumar. India.

Nov 21, 2010 | RCA Standard (CRT) Televisions

1 Answer

Don't have any sound


If the picture is available and no sound, the trouble could be from speaker audio power supply or Audio IC. Check all the audio components. Check the sound mute status before replacing IC

Apr 09, 2010 | Sylvania 6427TE 27" TV

1 Answer

There is no audio in my tv - model onida ky thunder


the speakers or audio ic may be gone.....in rare cases the memory ic must be changed.. or supply to a audio
ic ,it will be 15 v from the power supply of tv may be missing....

Mar 23, 2010 | Standard (CRT) Televisions

1 Answer

Sanyo TV Chassis Series AC5-C20 no sound


check power supply to ic,, it will be 12v from smps..may be fusable resistor has gone

Mar 21, 2010 | Sanyo DS27910 27" TV

1 Answer

SOUND BUT NO PICTURE WHEN DVD IS PLAYING


Need to check an av switching ic. Make sure you got the 12v going to the ic, if missing troublle shoot power supply. If it is there, bad ic. Or if it is low, unsolder vcc pin and check for right voltage to see if the ic is bringing down the voltage.

Aug 31, 2009 | Sony KP-46V35 TV

3 Answers

21pt2216/94 phillips 21'' audio problem


your speaker maybe busted or check the amplifier IC

Oct 22, 2008 | Standard (CRT) Televisions

2 Answers

Audio on my old Sylvania TV


turn the volume control rapidly then hear if there is a sound.if not replace the audio amplifier ic and tranistor

Feb 08, 2008 | Standard (CRT) Televisions

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