Question about Philips WACS700 Shelf System

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I have a Philips wac700/79 AU and repaired the amplifier. Then an issue with the supply came up and suspected it was a zener diode (Z12). I took it out to test and lost it. Later I found out I was wrong, it was an inductor. Anyway, the part was lost and run over and I didn't get a rating for the diode. Can anyone help me identify Z12? Thanks in advance. mike

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  • datatrader Nov 17, 2010

    Thanks for your reply.

    I found the schematics for the stereo, but they only have a block diagram for the supply.

    As for the diode next to Z12, I also assumed that would be the case but I only get one shot at getting it right, so I wanted to make absolute certain it was the right one before I bought it.



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I realize this isn't much of an answer,but I would contact Philips directly.Schematics ARE NOT downloadable free anywhere due to copyright and/or patent laws.I always get a bad rating when I post that,but it is a fact.I have researched the laws thoroughly.If it is the first diode on the input from wall power,the one next to it connected in parallel to Z12 would be the same exact rating.As far as finding it,if you are not near a major city,the part may cost less than $1,but S&H could easily be $6 and up,and also will come in a static-preventive bag.If you are not near a major city,when you find something out,please let me know first.Just comment here and I will get an autolink to your post and reply ASAP.I am currently looking for a couple electronic components for someone else,and would simply mail with a stamp.I live near a major city also and the google I did Sunday I saved but my schedule has not allowed me to call places yet this week,but will happen by Friday.Also,do not approve/disapprove yet as it will cut off our link.Here is Philips link.I would think they would at least tell you the proper rating.A schematic could easily be $50+. Greg

Posted on Nov 17, 2010

  • Greg McCarthy Nov 17, 2010

    Yeah,block diagram is useless in this case.I really would like to know though.Is Z12 right off of the wall outlet?Heck,I'll even call them if you want me to and it isn't.

  • Greg McCarthy Nov 18, 2010

    Have a couple of questions.Where are you?Is this an amplifier?I called Philips and they do not have that model number in their system,but I am in the USA.If you are not in the USA,you will have to call Philips to find a rating.AU could mean an Australian version,or auxilary unit,or none of the above.Greg



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