Question about Televison & Video
If the fuse keep on blowing up on the first charge but the set does work when power is charged up - after you replace the fuse- the problem is with possible high drain on the first charge. So it can be that the convergence circuit is not stabilising and hence outputting with a intial thrust.
Check for partial short of filter capacitors in this section, check for faulty /weak capacitors in the convergence section.
A possible leak in the transformer cannot be ruled out or the feedback voltage to subsections can be a suspect.
Disconnect each one of these circuits while conecting the fuse to access the faulty circuit.
If any component is heating up it can be an indicator to check .
If the fuse seems to blow on cold start warm up the suspeccted board area before you swiitch on. It this works then the suspected components must be pinpointed. Also reduce the +B voltage to find out if the set stabilises.
Posted on Sep 16, 2010
The first fuse was burned down because one of the IC was experiencing problems. The second time happened because the IC finally failed completely. Now you have a shorted component that is blocking the power source.
The only thing you should do is to refurbish the Convergence board - use a repair kit that you can buy from here
Posted on Sep 15, 2010
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Posted on Jan 02, 2017
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