A little help please

[davosh]

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

[Steerpike]

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.

[eyoung]

ditto...E