tda2052

MaXiZ

Member
2003-06-29 12:21 pm
Italy
I've build the suggested schematic on pdf file of datasheet.
But i've the following trouble...
1) Turn on my PSU +/-24V
2) All wire connected (input/output)
The trouble is here...
I give +5v at pin3 and for a second it seems to give the right power to the speaker and immediactly after it goes at lower volume with a little tendency to give high frequency as output...
I hope to have be clear....
Some suggestions?
 

MaXiZ

Member
2003-06-29 12:21 pm
Italy
Are the red polarity correct?
And if it's alway connected to negative it's always in stand by....
 

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jaudio

Member
2004-10-29 1:31 am
It is likely to be something simple. Lets start eliminating possible problems.


1 make sure all cap are connected properly(polarity)

2 check all ground wiring

3 measure resistance at pins(between pin and ground)

4 C1 bewteen R1 and pin 7(not R1 and ground)

5 measure at pins 5and 7 : bewteen pins 1 and 6 and bewteen 1 and the (+) of C2
 

jaudio

Member
2004-10-29 1:31 am
Dont connected any. Only check the resistance bewteen the pins,You know what the resistance should be.

I looked at the picture you posted everything seem OK. The only thing I see that maybe a fault is a possible connection bewteen pin2 and 3(look inside the square).


Have you built more than one?.
You make just have a bad chip. It happens.

Were is the +5V for pin 3 coming from?