Question about Pioneer Audio & Video Receivers
It is most likely that the laser pick up is bad. That is the part that reads the disc and is the most common reason. You can try a lens cleaning disc to see if it just needs to be cleaned, but if that does not work you will need to take it in for service. This problem can be caused by several different things, from the spindle motor (spins the disc), to the pick up (reads the disc), or even an IC that controls one of those things. Once you have cleaned the lens, you can also try cleaning the disc's. If a disc has a fingerprint or scratch in the area of the disc that is know as the TOC (table of contents), it will not read the disc. Fingerprints in other areas of the disc will cause the player to skip or even stop playing. I use windex and a soft cloth like a bath towel to clean the disc's, it works as good or better than the disc cleaning kits you can purchase, and it is much cheaper.
If none of this helps, it has a problem that only a trained technician can figure out with the proper test equipment. Then you must decide if it is worth getting fixed. Some service centers offer free estimates, but those are the ones that don't actually check your equipment first before giving an estimate. They just give you a ballpark figure that is usually pretty high. To get an acurate estimate you normally have to pay for it. A technicians time is worth money, my shop charges $25 for an estimate.That is pretty cheap. Some are as high as $65 for an estimate. But if you are paying for an estimate, they will normally at least troubleshoot the unit and determain just what the problem is, compared to a free estimate which is just a guess and a ballpark figure usually high to cover the cost no matter what the problem is. You may also end up paying much more for a repair when you get a free estimate, because you have already approved that amount, and many shops will charge you that much even if they find a simple problem that only takes 30 minutes to fix.
Replacing a pick up normally cost about $125 to $150 because the part can sometimes cost as much as $75.
I hope this was helpful for you and lets you make an informed decision. let me know if you need any more help.
Posted on Jul 13, 2008
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Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; 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 and competent hands-on tech.
Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.
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