Question about Sony BDVE280 3D Blu-ray Home Theater System BDVE280
On turning on it says welcome on front of unit then makes a few beeps noises welcome title disapears and thats it , have tried unplugging , but nothing happens.
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Posted on Jan 02, 2017
Generally speaking, an amp attempts to protect 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 'nekkid'. 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 another possible root cause for intermittent shutdown.
Posted on Sep 08, 2011
This is a logic problem with the internal microprocessor. A quick experiment: Turn the unit on for about 2 minutes and shut it down. Doe sit power uip in this case? If so, I'd suspect that the heat generated during normal operation is creating an internal problem thaty is preventing the micro from recognizing the "off" condition. The power data line is hung and is not being recognizwed by the micro so any attempt to turn the unit on will fail. The unplug/re-plug essentially clears or resets the unit.
If the unit is new, return it for warranty repair. It will be important to describe when the unit fails however. Try to see how long it must remain on for the problem to occur.
Update this with your results if the unit is not under warranty and we'll try to narrow it down.
Posted on Nov 05, 2009
SOURCE: SONY BDV-E280 BLOWING FUSES
I have not worked on these directly but it sounds like a bad capacitor in the power supply that blows fuses upon a power on. If the unit has a switch mode power supply the switch on from the strip might be sending in a high transient causing the switch mode supply to draw too much current. How does the unit work if you just leave it plugged in?
If switching these on and off the better way would be through a zero crossing voltage solid state switch.
Posted on Oct 06, 2012
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