woofer repair course

 Woofer repair course

Dear Electronic repairer

I get lots of inquiries from my followers requesting a book on woofer repairs, so this book is yours for the asking.

To be an expert on any equipment repair, the basic thing is to understand how the equipment works.

The book is divided into two parts:

Part one: is composed of 4 chapters on the major circuit blocks in woofers and explains basic functions and common problems associated with these blocks.

Part Two: is composed of 5 chapters of pure real-life repair histories from the technician work bench.

The book is illustrated with numerous color photos to make the reader learn faster and get the concept pretty fast.

Every Chapter is hyperlinked to the list of content for easy navigation within the book for those who decide to read the book directly from the computer screen.

Table of Contents

Lesson 1: Types of power supply used in woofers. 4

v      Linear power supply(transformer) 4

v      Switch mode power supply (S.M.P.S) 8

Lesson 2: How to convert woofer SMPS to the transformer(linear) power supply. 9

Lesson 3: Troubleshooting woofer using IC. Tda7377. 14

Lesson 4:Troubleshooting Woofer using TDA2030. 20

v      Stereo amplifier troubleshooting. 22

v      Understanding Subwoofer Pre And Amplifier Circuit 23

Lesson 5: Hotpoint woofer model HA14630BT came in stuck in standby NOW repaired. 24

Lesson 6: SAYONA SHT-1132BT Woofer repair dead now repaired. 27

Lesson7:Von Hotpoint 2.0 Channel Surround speakers’ model HA160200 inputs not responding(stuck) now repaired. 33

Lesson 8: The Clubox woofer producing a Humming Noise is now repaired! 38

Lesson 9 : The TLS woofer came in with low audio output now repaired. 43

Lesson 10: Conclusion. 49

The book is going for an introductory price of $13.95 US dollars! 



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