About Waveforms In Equipment

When you perform the electronics troubleshooting work, having a service manual or schematic diagram is an added advantage. The sample waveforms listed in the manual could quickly helps you to pin point the fault fast. Of course not every troubleshooting job need an oscillscope to locate the fault but if you are facing troubles in a tough dog repair then you should need it.

I believe you have downloaded some service manuals from internet before and if you carefully observe those waveforms, you would see that those waveforms actually taken from critical test points. Not only that, the waveforms result are in peak to peak voltage (Vp-p) and not in frequencies and etc. This mean that if a good waveform have 12 volt peak to peak anf if you got only 6 or 7 volt peak to peak then you have to pay a special attention on that test points or circuit. Any bad component in that circuit could change the result of the peak to peak voltage.

If you don't get that exact waveform or the waveform in different shape then this mean the particular circuit have problem and you need to concentrate on that area.

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8 Comments

1. 

   beh

   April 24, 2012 at 9:52 am

   HI JESTINE
   i recommend this link also:        http://www.youtube.com/watch?v=B0ajIBb4EU4&feature=related
   thanks
   beh

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   • 

     Jestine Yong

     April 24, 2012 at 11:10 pm

     Hi Beh,

     Thanks for the link

     Jestine

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2. 

   beh

   April 25, 2012 at 10:31 am

   HI MR YONG
   this is a long time you have not gone for fishing . you forgot fishing?
   beh

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   • 

     Jestine Yong

     April 25, 2012 at 10:06 pm

     HI Beh,

     In fact i have went for fishing many times and even went to many local places for holidays but I no longer put it i my blog. I will go fishing again next month to Merchung.

     Jestine

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3. 

   beh

   April 26, 2012 at 1:14 am

   HI JESTINE
   ok i will be very happy if you send me the pictures. and as nature lover  i am going tommorrow to spend one night in desert i want to see the sky and strange things there. for sure i will send you good pictures of this trip to the middel of country
   rgrds
   beh

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   • 

     Jestine Yong

     April 26, 2012 at 8:10 am

     Hi Beh,

     Most of the local places that i had been you have seen before like kelong, port dickson, Penang and etc. If I have visited other country i will post it to my blog.

     Jestine

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4. 

   Sam

   November 29, 2013 at 10:16 am

   Hello
   Have done a lot of fishing both on fresh waters and sea. But nowadays
   I cant seem to have time for that. About wave form on equipment, 2 DVD
   player was brought to me with no video output. A check on the trace
   with a scope, found an open inductor. The other is a set up problem
   that was set for video component. More POWER. Sam

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   • 

     Jestine Yong

     November 29, 2013 at 10:50 pm

     Hi Sam,

     Thanks for sharing

     Jestine

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