Question about SVA-USA HD4208TIIIBU 42 in. HD-Ready Plasma Television

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Relays click. That's about it

The power-on relays click but the front LED never goes to green. It blinks red once and internally the Alarm LED 8004 is lit. No HV to the screen.

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Try unhooking the wires coming off the power board you should be able to unhook every thing except the switch wire and se plug if the green lights stay on and the red don't come on then you have something loading down your power supply if it still shuts down you need a new power supply

Posted on Mar 20, 2008

  • utahnative Sep 22, 2010

    what do you mean, "new power supply"?



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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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First alert 9120b

Hi hislop_amand,

I know this is coming to you late yet I just seen your post and hope the following can still help you or others.

Kind Regards,

FIRST ALERT Model: 9120 9120B

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