I have a sony home theater with an s-air capability. when the home theater system is turned on, it scrolls push power protector. when the s-air independent box is turned on, i cannot get a connection when I turn it on. independent s-air box, a green light blinks under the name how do I fix this connection problem.

SOURCE: push power protector

I brought the unit to an authorized Sony repair depot and they concluded that all the power transistors were fried. They replaced the system board under warranty (at no charge) and the system has functioned perfectly since. Thanks for your help. -Steve.

Ginko

• 19396 Answers
• Posted on May 04, 2009

SOURCE: sony home theater system started blinking protect

Protect mode will kicking whenever a fault is detected.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.

Francisco Mauricio G

• 1551 Answers
• Posted on Jun 24, 2010

SOURCE: push power protector showing up in sony dvd home theater system

Always be the audio amplifier IC damaged

SOURCE: system is not switching on.put

There is no 'switch' or control for Protection.

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. Eure 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.

SOURCE: model home theater system DAV-DZ290K push power

How much it cost for audio amplifier IC?