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Blows fuse when turned on

Sansui 3200 keeps blowing fuses when you turn it on it blows fuse

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This is a normal behavior if one of the power supply transistors have blown. take the unit to an enlectronics repair. they can either change the transistors affected (usually more than one) or replace the power supply board.

Posted on May 29, 2009

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You might have need for the following information:
Hope this be of additional help/idea. Pls post back how things turned up or should you need additional information.

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Hi,

Their would only be a limited number of components capable of blowing the fuse. They would be:
  • bridge diode;
  • filter capacitor;
  • regulator IC;
  • mains B+ capacitor; and/or
  • overvoltage protection (SCR type).
all in the power supply circuitry.

Depending on the PSU design, other load side components can and may cause the fuse to blow likewise. They may include (but not be limited to):
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Repairs/diagnosis of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.
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the problem is one of the four diodes in the power supply.(i had the same problem) .the only other thing that would cause this is a shorted horizontal
output tranistor

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1 Answer

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you have defective power supply! you have shorted parts! like diode or regulator. replace the shorted regulator.

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