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Audio ic damage

Wk 3300

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Hi, my denon 3300 is has no sound sometimes. i havent changed any settings. please help.thanx

hiCheck IC403 on the AUDIO/DSP unit. I have had it cause some input problems.If pressure is lifted on the ic then it will break contact on the board.It may just need to be reseated or the socket needs to be re-soldered.
Hope this helps.

Jul 08, 2011 | Denon AVR-3300 Receiver

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Dennon AVR 3300-- problem is the input signal (digital optical connections) for DVD and TV is no longer being "lock" or recognized

hi Check IC403 on the AUDIO/DSP unit. I have had it cause some input problems. If pressure is lifted on the ic then it will break contact on the board. It may just need to be reseated or the socket needs to be re-soldered.
Hope this helps.

Jul 03, 2011 | Denon AVR-3300 Receiver

1 Answer

Televisor se prende no hay audio pero al rato cuando calienta le entra un ruido en los parlantes y da volumen

Your TVs audio output IC has damaged. It has to be replaced with same type and number. to confirm it, check by feeding your TVs audio out socket to any other amplifier and check whether there is sound or not. If there is sound, and nosound comes from its speaker, no doubt that the audio output IC has damaged. OK.

May 17, 2011 | Protron PLTV-32 Television

1 Answer

The T.V. has done fine since 1995, but as of a few days ago the audio is no longer working. What might be the problem? Thanks, Bill

two problem can occur for this type of complaint.
1. the speaker might be damaged
2. the audio output ic faulty
check the speaker first. u can simply check the speaker. pull out its socket from the main board and connect a battery( 1.5v AAA) to the speaker terminal u can hear a noise ,if not the speaker is damaged. if its make sound, then go to the audio output ic. for find out which is the audio ic, just trace the track connected to the speaker socket . it will lead you to the output ic. normally it will be near the speaker socket.
first check for any dry soldering at its pins.if not just replace the ic.

Jan 05, 2011 | Sony FD Trinitron WEGA KV-24FS120 24" TV

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No sound/audio while playing tv.


If there is no audio output from your tv, either your TVs speaker or its audio output IC has damaged. You just check it with an earphone/headphone, if there is an earphone or headphone socket in front panel of your TV. If there is sound from the headphone/earphone, and not from the speaker, means the speaker has damaged. You have to replace it with same type and number. Just check your set's audio out socket, if any provided, connet it to any external audio sourse, like amplifier or so, and check whether there is sound output from it. If not, your Tv/combos' sound processing IC inside has some trouble.
most common fault is related to sound output IC or speaker itself. If speaker is found OK, go to the sound output section. This section can be easly located as speaker wire goes to that section, and follow it. Before replacing the IC, check its leads for any loose or bad soldering. i advice you to resolder all the terminals of that IC, by applying a little more solder, without making any solder bridge loose contacts between them. If this does not helps, replace the IC with an identical type and number. OK.

Dec 24, 2010 | Panasonic PVQ-M2509 Combo

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.


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 Televison & Video

1 Answer

Casio WK-3300 intermittent display problem

I had the same problem after my keyboard sat for awhile unused, with the display not working, which probably indicates kamangaezeki was right about it being a flash problem. The solution for me was to take the batteries out, unplug the ac, replug it, and then power on while holding the transpose button. This appears to have reset the display, works fine now

Aug 21, 2009 | Casio WK110 Portable Keyboard

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Casio WK 3300 Display Problem

Flash error problem on casio wk 3300

Mar 31, 2009 | Casio WK110 Portable Keyboard

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