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My Sony Mini MHC-GX470 have been working until a power outage yesterday and now it will start coming on the goes back to standby mode. I can hear it going through the system, starts the radio and immediately goes to STANDBY. I need HELP!!!!!!!!!!!!!!!!!!!!!!!!
Turn the unit off and dis-connect the speaker wires, press power and turn down volume, if it comes out of standby mode and comes on it means there is a short in the wires or one of the speakers. But! if it stays in standby with everything dis-connected it proves that one or more of the audio output ic packs is shorted and needs a tech to resolve the issue.
Audio output shorted out or blown fuses in power supply check all fuses if fuses are good your Audio out put transitors or I.C has been shorted out as a result of impedence over load in future dont connect speakers in parallel in those small Audio units.
According to Page 46 of the LBT-W5000 Operating Instructions:
"The display stars flashing as soon as you plug in the power cord even though you haven't turned on the system (demonstration mode).
Press DISPLAY (for LBT-W5000 / W300 / XB700 / XB500) or DEMO (STANDBY) (for other models) while the system is off. If the system is in the Power Saving mode, press POWER SAVE / DEMO (STANDBY) (for LBT-W5000 / W300 / XB700 / XB500).
The demonstration appears automatically the first time you plug in the power cord, or if there is a power outage lasting longer than half a day."
I tested this today, as my LBT-W5000 was in Demonstration Mode. It definitely works. The only catch is (at least on the W5000), and it's a minor one, you have to reset your clock afterwards.
You can do a search on the internet to see if you can find it for free. there are several good sites to get manuals. I am not sure that it would be proper to list anyone specific but they are out there. Just do a search either on the part number of the unit or search for "free service manuals" you will find them. If you cannot find the one for your model then call the manu. You will have to pay for it but it would still be cheaper than taking it to a repair shop.