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Blowing fuses in power supply

About a 6 year old Meade LX-200 telescope. Keeps blowing the fuse in either the DC power supply or the AC power supply when I turn it on.

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  • Stardrek2000 Nov 10, 2008

    I have an LX200, 8 yrs old. The fuse in the power cord from either battery or wall socket blows instantly when turned on. The fuse on the circuit board is ok. I read the explanation, but I have no skills in electronics. If I could see it in pictures or bring the scope to someone, it would help. Please let me know.

    Steve

    (Stardrek2000@hotmail.com)

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One thing to check, would be the filter capacitator that is on the front circuit board. They are known to become shorted. The cap is fairly large, and may be mounted on the side of the circuit board that faces the front panel. Clip one lead, and apply power. If the fuse does not blow, then that is it. A second possible component, is the polarity protection diode, that is near the power jack, next to the fuse. If it is shorted, then the fuse will blow every time.

Posted on Aug 24, 2008

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