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Old 31st January 2003, 03:31 AM   #1
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Default What kind of amp is this?

Not too long ago I ripped apart an old console TV for parts and noticed that the amp section was totaly seperate from the tunner and crt drive. So I took the whole amp section out and with about an hour's hacking I had just the amp fired up and jamming out tunes. I noticed it actualy sounded better than my current amp!! It wasnt as powerful but it did have better stereo imaging. I know its sounds crazy.
Here is my question. How do I identify what type of amp this is. I can identify some of the parts of the module like the power supply.


btw it came out of a GE tv with "performance sound series II"
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Old 31st January 2003, 03:39 AM   #2
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On close inspection it appears to have one 5 legged op amp per channel.
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Old 31st January 2003, 12:44 PM   #3
yeti is offline yeti  Germany
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Is it a TDA 2004 or something like that?
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Old 31st January 2003, 01:35 PM   #4
halojoy is offline halojoy  Sweden
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swirv,

Without seeing some text/number on that IC,
it is hopeless to know what it is.

There are 100reds of 5-pinned Power-OPs and Power IC amps.

But if you can give us the letters of the label,
we will almost certainly be able to know
which one it is.

Try to use a mirror or a magnifying glass,
and read the numbers.
It might well be TDA2004, like yeti says, it is very commonly used. And TDA2002.

/halo - the amplifier obsessed
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Old 1st February 2003, 12:48 AM   #5
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it is a TDA2040

Has anyone here used this amp? How does it fair? This amp sounds nice, it does have some noise but I think thats from the mixer/preamp circuts. It had a volume control that was on a differant board in the TV. However, it didnt come out when the amp module came out so the wire that went to this board is connected to ground to get sound at max volume. I thought that if I put a pot to ground I could use it but just touching the wire with one hand and touching ground with the other gave full voume. Any hints as to use this as a volume/gain? I'd like to turn down the "gain" on the amp and feed it a higher level signal to lower the noisefloor a bit...
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Old 1st February 2003, 12:53 AM   #6
halojoy is offline halojoy  Sweden
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Default TDA2040 - now TDA2050

Okay, there you have it.
They are some good cheap amps.
I have made some promotion for them at different threads.
And attached some info from TDA2050 datasheet.

TDA2050 Thread.

Nice to here they sound good.

/halo - told them - they wouldn't listen
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