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Replaced board that has hdmi ports and the tv still has high power coming out of cable in put port and has burned out hdmi inport

Replaced the board that has the hdmi and cable in port. pluged tv in and same thing happened buzzing sound.. burnt out hdmi port in cable box...and high voltage coming out of cable in port...kicked circuit breaker again ...do i need to replace the other 2 boards?

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The Knight
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Fault to the main power supply regulator section. {AC leak} Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Nov 16, 2015

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Posted on Jan 02, 2017

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