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No Power. Upon Switch ON, juts a sound click and won;t power on anymore. No LED indicator.\Already check fuse, still the same

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Needs cops on power board..................
cheers

Posted on Mar 26, 2011

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Posted on Jan 02, 2017

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Imac intel will not power on


Possible failed video card. 3rd LED indicates MLB and GPU are communicating: (CAUTION! There is high voltage from the powersupply so any attempt to open iMac other than removing glass panel to see the indicators...should be done by authorized ACMT)

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1 Answer

My haier tv model no. hl42e wont come on


Hello
If its power indicator LED at the front panel is also do not light up, there is some fault with its power regulator board inside it. Open your tV, and locate the power regulator board. It is easy to locate as, AC power goes direct to it after ON/OFF switch. Check the protector fuse [a glass cartridge type will be used] is burned out or not. If it ahs burned out, replace it with same type in both size and ampere capacity. You can not is rating on its rims; or it will be markde on the printed circuit board itself, under the fuse holder.
If the newly inserted fuse also blow out as soon as you switch ON the Tv, never use anymore fuses, as there is some direct short circuit with that power regulator board. It is better to replace that boad as card basis, than making any "surgery" to it. OK.

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Hi,



Since you've already replaced the power cord and still the led light won't came on, this is an indication that the power supply board of your unit is dead. If it is not under warranty period(if so, avail it because the manufacturer will fix it for free) open the back cover and check the continuity of the fuse using the multimeter, if you found it open replaced it with the same current(ampere) ratings and then try to turn on the TV. If the replacement fuse blew again, this is an indication of more serious problem on that board. If the replacement fuse didn't resolve the issue, other parts on that board gone to malfunction as well. If this is the case, I would advice you to replaced the entire board for your convenient. The cost will almost the same rather than troubleshoot it. Check the actual part no of your board and check this LINK.







Hope I helped you.

Have a nice day!

Thanks for using fixya.

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