I recently notice the the output from my receiver seems to be reduced. When playing music I would have the volume set at -.50. This was plenty of output for easy listening. Now I find that this setting appears to be putting out less sound. I've checked all connection, all channels, each individual speaker and tried different sources of input (radio, cd, dvd)but have the same results. I can turn the volume up to get the output but am concerned on the cause of the reduced output?
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Comment by hillbillykid, posted on Feb 21, 2008
About a month ago had a small smell of burnt electronics and thought it was from the new TV I bought, but nothing was wrong. Yesterday heard my power regulator for the computer complaining (beeping) as if either I got a huge voltage spike in my electricity (or maybe something shorted somewhere) but the lights or circuit breaker of the house did not go out. Then at night went to listen to receiver and I notice the it was working partially. This is, everything works, sound through all channels, etc BUT it has lost VOLUME this is when volume at 35 out of 60, it sounds like 10 out of 60. Also it lost definition, the sub for example seems to have frequency missing. Could it be that some audio/output amplifier IC burnt? How many IC amplifier does this unit have? If one burnt would the symptom be as describe above? Am I in the right direction to what is my receiver problem? Any help would be appreciated. Thanks
Are you sure the amplifier can breath. No buildup of dust and fluff
on the internals. Bad air circulation can cause heat sensors to attenuate output in some amps too. Are you sure the bass/mid and treble are in their correct positions? Are you sure there's no inbuilt attenuator which may have been pushed in error?
Does your unit have presets such as Rock, Classical, Disco etc? These can cause major output variations. Also many amps have inbuilt graphic equalizers which can be saved. Are you sure someone hasn't used it to cut back cartain frequencies.
If the outputs are protected by fuses, remove then and replace them with new ones. Over a period of time fuses can become stressed due to beinf constantly warmed up and then cooled down. Occasionally ther can appear to the circuitry to be resistors and load the output down.
Apart from these tips maybe a trip to the doctor but before doing so, double check your wiring and connections etc.
Good Luck
BMW
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