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Will not power up after power outage

Power supply relay ic blowing one resistoralsow

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Unplug power cord of ac adapter , press the ignition key for 20 seconds , then turn in power cord and turn on computer... if this solution is not helping at all, replace AC unit

Posted on Oct 18, 2013

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The relay for the motor is stuck or the points inside the relay are arced closed. Replace the relay.

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My tv clicks to come on but no sound no picture


If there was a power outage the problem is likely in the power supply.

The power light on the front comes on or not?

If no power light unplug the set and follow power cord inside and check the fuses---the click is a power relay activating---set may have up to 3 black relays on the power board.

Let me know your skill level and I will be happy to help.

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MY RCA 27" WILL NOT TURN ON, HAVE POWER TO THE FUSE, THE FUSE IS GOOD ALSO BUT THE DEGAUSS RELAY DOES NOT CLICK AND NO OTHER CLICKS ARE HEARD EITHER, WHAT COULD BE WRONG?


you need to check the voltage output of your power supply section.This power supply supply is a switching type power supply.there is a chopper transformer in there.its supply is a dc voltage unlike any other transformer which is AC supplied on the primary..First step.
1.Using a multitester measure the primary supply it is a DC voltage around 220v - 110 VDC
2.Measure the secondary output.The out put is AC voltage the supply for the B+ going to plyback is 115vdc the second output is 12v run through a regulator and the regulator lower the voltage to 5vdc.this 5vdc supplies the system IC and the jungle IC.this ic process the switching of the plyback transformer and the plyback transformers output supplies the voltage of the whole system including your relay in the degaussing section....once the plyback is activated the tv will now turn on...

good luck!Hope i helped you..

please rate my help..god bless!

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Depending on what made the power outage, your power supply might have got fried. It might be as simple as a few capacitors blowing or a little more serious. I would suggest taking it to a repair shop. A power supply replacement will run you about 200-250. If its just a few capacitors, should be around 100.

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Red light flashes,10 sec after turning on. after power outage


Hi, thank you for visit fixya.
Do you need replace both stk 392-110, and check any resistor (2.2 ohms) for blown or open. You can replace this IC's for stk 392-150d9f769b.jpg

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Blows 4 amp fuse inside tv


the poer supply faulty. Isolate Horizontal output stage from the power supply and connect dummy load (like normal bulb same wattage as TV ) and test. before that pls check all component in power supply and replace and burnt parts spacialy diodes caps and power regulater ic as well

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1 Answer

Had a power outage, acer monitor will not power up


Normally there is a fuse that can be replaced inside on the power supply board. The are usually "slow blow" fuses and need to be replaced by an equivalent fuse. Many monitors have a soft switch which is controlled by the main board that tells the relays to supply power from the power supply. The CMOS devices on these boards are very suceptible to static so ground your hand to the chassis before touching any boards. If the backlight is out but there is a faint image on the screen when you look at it closely then the inverter board or CFT tubes are suspect. BTW: watch the Power supply and inverter boards as the caps stay charged and could result in electrical shock. Good luck. Hope this helps.

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