CRT TV sound section details। TDA2003 IC Audio Section sound muting problem।

CRT TV sound section details। TDA2003 IC Audio Section muting problem with circuit diagram।
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Video Link:https://youtu.be/iasXaOGdCr8
Description:TDA2003/2002/CV203 is a general-purpose audio amplifier circuit IC for stereo or mono audio design circuits. This amplifier IC can output up to 3.5A current to drive speakers & can also handle high current up to 5A for the shorter duration without any damage. It can also handle short circuits in both AC & DC rails without damaging itself. It has an operating voltage of 18V but can handle high voltages up to 28V. The TDA2003 amplifier IC delivers a 7 Watt output power using a 12V, 500mA power supply with a 4Ω speaker. TDA2003A is a 5-pin audio amplifier IC. The pins 5 & 3 power the Amplifier IC, and the audio signal to be amplified is given in through pin 1 which is the non-inverting input. The amplified audio output can be obtained on an audio transducer such as a loudspeaker through pin 4.
The TDA 2003 has improved performance with the same pin configuration as the TDA 2002.The additional features of TDA 2002, very low number of external components, ease of assembly, space and cost saving, are maintained. The device provides a high output current capability(up to 3.5A) very low harmonic and cross-over distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range, load dump voltage surge up to 40V and fortuitous open
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