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The tv has no sound ive replaced the ic TDA2616 i now get sound but only on full volume and it is still very soft so it tells me that the pre amp is working how do i fix this problem

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If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Type in this key phrase " my service table today " in the search box at the top right of the the home page, to get gathered some pages which has the details of practical experiences of the author of that site. The search result will display about 20 Nos of related posts. Press the "All posts" at the bottom of the list, then you can select them one by one.

Posted on Dec 07, 2016

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Posted on Jan 02, 2017

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HAS ONLY THREE QUATER VOLUME USING ORTRFON OM10 CARTRIDGE


If you have tried a different cartridge and got full volume, then either the Ortrfon is faulty or that the pre-amp inside you amp has problems working with that make of cartridge. If you have lower volume with another make of cartridge too, then the pre-amp in your amp is faulty. Remember this pre-amp will not affect any other amp function, only the record player volume. Most of these pre-amps are a single IC around some minor components. If replacing the IC doesn't correct the fault, it could be one of the minor parts around the IC that's pulling the volume down.
It's also possible that the Ortrfon causes the fault on the pre-amp too. Perhaps it gives off a stronger signal that causes the pre-amp to reduce the volume. I'm not saying the Cartridge is to blame, but maybe there is a fault on the pre-amp that is only triggered by that brand of cartridge?

Feb 26, 2016 | Audio Players & Recorders

1 Answer

I have a ken wood kr-797 stereo receiver but I can get sound but it's very low and I have to have the volume set at 0db in order to hear anything. It's like this on all inputs


I suspect that the pre-amp stage in you amp has failed. What you are hearing is the power amp on full volume. But with no pre-amp to boost the signal it's to low.
What we do know is that the sound is going into the pre-amp and out for you to hear it. This could mean that the power to the pre-amp stage is low, but still present.
Pre-amps these days mostly consist of a single IC. That could have failed, or it is not getting power. Since it would be possible to test the voltages to the IC, one pin should have something on it to the region of 6 to say 20 volts going into it. If the IC has that going to it, it has failed. If the voltages to all the pins are low, then you have a power problem.

Aug 27, 2015 | Audio Players & Recorders

1 Answer

Onida crt tv picture ok but no sound .supply also ok I replace sound ic tda2616 I checked both speakers


Have you checked the supply voltage and other pin voltages to this IC? Check it. If all are found OK, and still you do not get sound, main IC is likely to be faulty. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window, to get gathered some pages which has the details of practical experiences to the author of that site.

Aug 16, 2015 | Televison & Video

1 Answer

I have a Crosley cr66 Rochester that plays records very quietly even at highest possible volume. Cds and radio can go to full volume so I know its not the speakers. Any idea what the problem could be?


There are 3 possibilities.
1 The Cartridge is faulty.
2 The wrong type of cartridge is fitted.
3 The pre-amp inside your unit has failed. This would not affect any of the other functions if the deck uses a Magnetic Cartridge.

The first is obvious for the solution.
The second is more tricky. For example if a Magnetic cartridge is fitted and the deck hasn't been built for one, the sound would be there but very low, as there is no internal pre-amp fitted. The solution there would be to replace the cartridge with a ceramic type or one that doesn't need a pre-amp.
To the third solution. If the internal pre-amp for the Magnetic cartridge has failed this would need a service engineer to do it, unless you have the knowledge yourself to do the job. It's likely that it will be an IC that does the entire job. It would have to be identified and replaced.
As I say the failure of the IC would not effect any other part of the system, because only the record deck goes into it.

Jul 19, 2015 | Crosley Audio Players & Recorders

1 Answer

Good day i have a Technics amplifier SU-X320. Problem is it powers up up there is no sound. Checked all basic fault finding, suspect it is the volume IC.


"Volume IC" do you mean an IC that is a pre-amp and controls the volume and things like tone? Or do you mean the main power amp IC, which will be on the big heat sink?
If you amp uses the latter and not individual separate devices for the power amp, suspect that over the other IC. But if the amp has separate power amps for both channels, replace the IC.

Oct 09, 2013 | Technics Audio Players & Recorders

1 Answer

Roland KC-500 has power but no sound.


You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good.

Nov 23, 2009 | Roland MMP-2 2-Channel Amplifier

1 Answer

I have a technics amplifier model SU-G75, it will power on but it will not play any of the equipments that is attached to it


You have basically the same problem as a chap with another amp on this site. So here's what I told him:
"You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good. "

Nov 23, 2009 | Audio Players & Recorders

1 Answer

I have a MPA 201 2 channel amplifier that just stopped putting out power, power light is still on, any suggestions?


You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good.

Nov 16, 2009 | Jamo MPA201 2-Channel Amplifier

1 Answer

32pw6515 32'' philips crt no sound or intermitten sound


if the jack out side works okay, that indicates that the pre amp is fine. the sound on the pre amp is tapped before the main amplifier.
check the main amplifier ic in side if it is getting hot.
you need to charge that ic.
okay

Oct 24, 2009 | Philips 32PW6506 32" TV

2 Answers

VOLUME CONTROL


I HAVE SONY TV MODEL 2197.WHEN I SWITCH ON THE TV NO SOUND INSTEAD OF THAT I PRESS FULL VOLUME ...

Jan 27, 2009 | Sony FD Trinitron WEGA KV-21CL10 21" TV

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