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My plasma tv keeps on blowing the fuse? any idea why?

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  • Panasonic Master
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This can be a fault in the SMPS , a faulty Smdriver or a storage capacitor , if this section alone is powered it can be confirmed. If not there can be heavy drain in the mother board or a possible short in the drivers or power capacitors.

Check this link for SMPS tips:


http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Posted on Sep 30, 2010

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  • Master
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Check SMPS circuit.

Check whether any diode is shorted itn the supply line. Start from the AC line, diodes, capcitors. Check SMPS Transistor mounted on heat sink.

Posted on Sep 30, 2010

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lovejoy91
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SOURCE: Panasonis 50" plasma, both fuses keep blowing when

This is a dead short, check power supply for diodes bad or zeners

Posted on Mar 08, 2011

  • 132 Answers

SOURCE: My dell 50" plasma tv had a blown 8amp fuse on the

Replace the power supply board.

Posted on Aug 23, 2010

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Samsung Plasma 64 inch, was on, then blew house fuses and no longer works. Isolated TV to work out that this was the problem. Any ideas


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Keeps blowing fuse


It has a short circuit somewhere...
Not sure if this is a CRT, LCD or Plasma TV but the two common causes of shorts for CRT's are the Horizontal Output Transistor (HOT) and/or the Flyback Transformer (Could be both). As a general rule if the flyback has visible cracks in the case they should be replaced. It is also a good idea to replace the HOT if you're replacing the flyback as it could be weakened and may not last much longer itself.
Other areas to check for all types would be any Diodes in the Power Supply Circuit. If a diode is open it can cause the fuse to blow. Note that a diode itself will not short, but an open diode can cause a fuse to blow.

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