Question about Sony STR-DE135 Receiver
I have a Sony str-de135. When it is first turned on the sound cuts in and out along with a popping sound from the speakers, this will happen for about 30 minutes or less and then it will have a reliable audio output. Also during this first 30 minutes tapping on the back of the unit can affect the sound and popping. Please let me know what the problem might be.
I have the same problem does anybody have and answer for this problem?
Posted on Feb 15, 2010
Tips for a great answer:
Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.
Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.
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