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Old 9th December 2009, 09:44 PM   #1
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Default A little help please

I have a pioneer Xc-l5, its not worth much but, i like it.

I have been having problems with it cutting out, when its turned on it clicks music plays through the speakers for a few seconds then it clicks again then stops for about 10 seconds, then music will play for a few seconds, click off for 10 seconds etc etc.

I think this is a safety feature to prevent speakers from being ruined.

However when i unplug everything apart from the power cable this clicking still occurs.

It is an intermittant problem that is becoming more frequent.

I have checked the speaker terminals on the amplifier to see if any strands of wire is causing it, however they are clean.

Is there something stupid i have overlooked, or is there a more serious problem with it.

Cheers
Dave
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Old 9th December 2009, 11:04 PM   #2
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The protection circuit is could be detecting DC on the output, where there should be none.
With the amplifier idling, measure DC volts on the speaker terminals to confirm this - at most a few tens of mV is allowed.
The fault is likely/possibly a small value (10uF to 47uF) signal coupling capacitor somewhere in the peamplifier or tone control circuit.

Alternatively, the protection circuitry may be faulty - "detecting" a problem where there is none.

The service manual is available free online.
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Old 9th December 2009, 11:16 PM   #3
eyoung is offline eyoung  United States
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ditto...E
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