Question about Sony Audio Players & Recorders
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Posted on Jan 02, 2017
The fuse blowing is a symptom of something seriously shorted internally. What preceded the initial problem? Smoke is bad. Fire would be soon to follow without the fuse blowing. Take it to a tech.
Posted on Feb 09, 2010
If its the sound board both fuses are the same. but if they blew you may have a bigger problem like output transistors shorted. But try replacing fuses first if they blow again thats your problem. Good luck
Posted on Jun 02, 2010
Disconnect all speakers at the receiver and test again. If it still blows a fuse, it needs a new power supply and needs to
be serviced. If it does not blow the fuse, follow this:
The most common problem found on FixYa for Audio Video Receiver's is:
My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.
Posted on Jun 13, 2010
If it keeps blowing the rated fuse you really need to take it in to a shop for further analysis. Using an incorrect, higher value fuse will only raise the risk of fire or more damage to whatever is blown in the unit.
Posted on Dec 09, 2010
Tips for a great answer:
Dec 08, 2010 | Sony STR-DE345 Receiver
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Oct 21, 2009 | Sony STR-DE535 Receiver
Apr 04, 2009 | Sony STR-D565 Receiver
Mar 05, 2009 | Sony STR-DE845 Receiver
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