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Peter van Merkerk
 
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Default Compaq TFT450 No Power

Peter van Merkerk wrote:
I have a compaq TFT450 lcd monitor which won't power up. The input
fuses on the 5v and 12v inputs are fine. After the each fuse there is
a 470 micro farad capacitor. I have a multi-meter but I am not too
sure on how to test the capacitors ?


To test the capacitors you will need an ESR meter.


An alternative for using an ESR meter is to use a oscilloscope to watch the
signal over the capacitor when the device is powered on. If the capacitor
is good you should see no or only a very small signal.

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Peter van Merkerk
peter.van.merkerk(at)dse.nl