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CS4228A burns after replacment

After replacment of CS4228A on DSP board, it burns after several times powering receiver on/off. VD pin of CS4228A gets ~100 ohm. Power supply looks correct +5v stable.

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  • 5,807 Answers

Hi

Martynas Z

CS4228A on DSP board can be overdriven on the inputs

CS4228A on DSP board can have shorted loads on the output


Check also the board (might be burnt also)

Here is block diagram for you:


CS4228A burns after replacment - 9_29_2012_3_36_36_am.jpg



Check components around it thoroughly.


Let us know how you make it out.

Posted on Sep 29, 2012

  • 1 more comment 
  • Anonymous Oct 02, 2012

    First of all the main problem with receiver was that FL channel was noisy. I found that CS4391 is defective. Sound from other channels was ok. After I changed CS4391 noise from FL channel was gone. But no sound from any of cahnnels. I noticed tha CS4228a heats up. So after i changed it everything was ok, but just for several timer tu turn on and off. I didn't find any defective componenets around cs4228a. I ordered another one chip, but because i didnt' find any probelms I'm afraid to burn one more :(

  • Anonymous Oct 02, 2012

    good luck and be safe always.

  • Stamatis Avlonitis Jun 13, 2014

    Martynas, did you finally fixed this issue? I have exactly the same symptoms but had only replaced 4392 only till now. I doubt if it is worthy to continue with 4228

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