Power on protector comes on - Sony DAV-DZ120 Theater System

check for power coming into unit -short with unit or failure of surge protector

If you don't have it plugged into a surge protector box it may have fried your connections. If you do have a surge protector, try reseting or push power button on surge protector unit.

Is it plugged into a surge protector? When the power comes back on to a lot of residents at the same time, a power voltage spike occurs that can damage electronics. All items that have any electronic circuits, need to be protected by a surge protector. Surge protectors do not protect against lightning strikes.

Do you have good power that the outlet. I have seen many issues at RV parks of not having sustained power or one leg of the breaker going bad causing loss of power. If you do have good power coming into the surge protector but not out. Then go through the reset procedures for the surge protector. If it will not reset, then the surge protector has failed and will need to be replaced. If power is coming through then check the main breakers in the coach for possible failure. Breakers can trip but still look as if they are properly set. Turn them completely off then back on to reset.

Turn everything off, the tv the power and make sure the button is not active at the moment. Some surge protectors do come with a fuse but when you turn the surge protector back on itself make sure it is recieving power, there is usually a red light on the switch while recieving power. Then try again once you know there is power to it.

Advise, c

1) Check to make sure THE receptacle in the surge protector that the computer is plugged into, is good.
I have had a few surge protectors where just THAT receptacle was bad.

("Hmmm, monitor, router, and printer has power from the surge protector." Checked the receptacle in the surge protector that the computer was plugged into, with a table lamp, found THAT receptacle was bad)

2) Receptacle in surge protector proves to be good?
Suggest performing the test to see if the problem is the Power On switch, or the Power Supply.
(The Power On switch is located inside the plastic Power On button)

The test involves bypassing the Power On switch, by using a jumper wire on the Soft Power On, in the ATX main power cable's connector.
Has nothing to physically do with the switch itself.

Using the jumper wire the computer (Power Supply) comes on?
Problem is the Power On switch.

[ Example of a generic ATX power on switch that I have found fits many computers,

http://www.directron.com/atxswitch.html ]

Using the jumper wire the computer (Power Supply actually), does Not come on?
The problem is the Power Supply.
Replace.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

(Green wire {PS_ON} is the Soft Power On wire. It is jumped to ANY Ground {Black} wire)

Want to know how to Properly perform the above test? Please post back in a Comment.
Also post the computer manufacturer's name, and the Model Number.
(On the back of a desktop computer next to the Windows Product Key, or up on the side of the tower)

Regards,
joecoolvette.

1) Check THE receptacle in the surge protector the computer is plugged into.

I have found more than once that One bad receptacle in the surge protector is bad.

"Hmmm, surge protector power on light is lit." "Monitor has power, amp for the speakers has power, and the router has power."
All plugged in to the same surge protector.

Tried a table lamp into the receptacle the computer was plugged into, Nothing.
Replace surge protector.

2) Bypass the Soft Power On of the Power Supply, and see if the problem is the Power On switch, or the Power Supply.

If you bypass the Soft Power On of the Power Supply, and the Power Supply comes on, the problem is a bad Power On switch.

If you bypass the Soft Power On of the Power Supply, and the Power Supply does Not come on, the problem is the Power Supply.

If you wish to know how to perform this simple test, just state so in a Comment.
(Believe upper right of your page)

Well, the power supply may be still damaged by the surge, what may happen is that when first surge happens the surge protector protect your TV by sacrifing itself but then the second surge comes along, since the protector already blown up then the surge will just come right through to the TV on the second surge. That is bad problem for the surge protector that sacrify itself but can only do it for ONE time.

It is a fault with your power supply module actually inside the tv...take it to a local service center or if its under warranty take it back. surge protectors help prevent issues like this occuring due to damage to the power supply from surges but not having one wont cause these problems unless it has recieved a surge.....in future i would use a surge protector on all your expensive appliances, surges and power fluctuations are very common in mains power i live near the mines and we have power problems all the time!! hope this helps,ben

check fuse n power supply section