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Author Topic: beta bass blowing power amp fuse  (Read 1485 times)

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Offline devoid

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beta bass blowing power amp fuse
« on: March 26, 2003, 09:03:20 pm »
the amp has been blowing fuses since it shorted out by a loose curcuit board screw. on the power amp board, i found a burned transistor (10), and replaced it. one filter cap was bad, so i replaced both.
fired the amp up, with the cover off and watched one of the 6 amp fuses blow. replaced it with a 7 amp (all i had around) and the second 6 amp fuse blew. i'm stumped.
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Offline Don T.

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beta bass blowing power amp fuse
« Reply #1 on: March 26, 2003, 09:27:24 pm »
Hello:
 Check all of your TO3 transistors for faults. Also check the shunt diodes. There are 2 (4004?) diodes that are connected between the power + - supply and the output. A short could have reversed biased them.
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Don T.

If it's too loud, you're too old.
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