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Xbox one S, will not show up on my hitachi 55hdt79. Why? Do I need to change a setting on the do box one S?

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6ya6ya
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Posted on Jan 02, 2017

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  • 120 Answers

SOURCE: Have a Hitachi 55hdt79...no pictures only sounds.

It might be the power supply, check the main power supply. Audio power supply is seperate to main power supply, thats why you have a sound.

Posted on Jul 24, 2009

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SOURCE: What board would be needed to repair hitachi 55hdt79 lost picture sound ok?

Good one (great description).

Power-board...!

Those gum-wrapper capacitors they are using can snap when they croak.

Have fun save $$$$

(but take lots of detailed pictures BEFORE you start).

Posted on Jan 03, 2016

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1 Answer

What board would be needed to repair hitachi 55hdt79 lost picture sound ok?


Good one (great description).

Power-board...!

Those gum-wrapper capacitors they are using can snap when they croak.

Have fun save $$$$

(but take lots of detailed pictures BEFORE you start).

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It's obviously beyond your expertise to repair it yourself. And it's not the sort of problem that can be diagnosed over the internet.
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1 Answer

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There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance. The best way to check for loose connections is to tap lightly when the set is powered on, if there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, and use a good soldering iron to solder all suspected points. Sometimes the fault occurs when the set warms up; if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault. It can also be related to WEAK ELECTROLYTIC capacitors as the value can reduce in time.

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i have a hitachi 55hdt79 that i purchased brand new some years ago and after only 1 year of use my girlfriend with her infinite wisdom threw something at me and as I dodged it the item hit and cracked the screen on the TV! I took it off the wall and boxed it up and has been sitting in my basement ever since. It still powers up and you can hear sound from it but for obvious reasons there is now image. If someone wants to make me an offer for it so they can use the parts to fix their own tv please let me know. email nutn2prv2u@yahoo.com it is located in Brooklyn NY 11223. you pay for shipping or I prefer you come pick it up. no reasonable offer refused.

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2 Answers

Have a Hitachi 55hdt79...no pictures only sounds.


It might be the power supply, check the main power supply. Audio power supply is seperate to main power supply, thats why you have a sound.

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Almost for certain your power supply board is bad, Can be repaired at the component level only if you have some electronics savy! Good Luck!

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