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Old 09-26-2009, 04:10 PM   #1
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RCA Television


I have a 27" RCA television that continually blows a fuse. The fuse is located on the backside of a circuit board, and the power cord is wired to the opposite side. When the fuse is replaced with the same size fuse, the tv powers up for just a second or two, then the blows the fuse. Any one have any thoughts on how to fix?

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Old 09-26-2009, 04:45 PM   #2
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cm3,You don't have a short but there is a faulty component drawing much more current than normal which causes the fuse to blow. The fix is to replace the faulty component.

IMO if the TV is more than three years old, it not worth trying to fix the TV.
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Old 09-26-2009, 06:19 PM   #3
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RCA Television


Search the Internet for someone who has solved this for your particular TV.

Or. . .

Substitute a power resistor for the fuse of value such that the current is small enough not to smoke the TV but large enough to trace where all this current is going.
With a schematic and a bench full of equipment it might take you hours to find the problem.
If the new part you put in also fails within a day, week, or month, it means you haven't yet found the root cause.

Last edited by Yoyizit; 09-26-2009 at 06:22 PM.
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Old 09-26-2009, 06:32 PM   #4
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A common fuse blowing problem for old TV sets and other electronics, both all-tube and solid state, is a shorted filter capacitor.

You will need electronics know-how to find and replace it.
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Old 09-26-2009, 06:36 PM   #5
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Quote:
Originally Posted by AllanJ View Post
A common fuse blowing problem for old TV sets and other electronics, both all-tube and solid state, is a shorted filter capacitor.

You will need electronics know-how to find and replace it.
I'd figure on the flyback oscillator 'sistor for a solid state set.
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