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Abu Gabby
Joined: 26 Sep 2006
Posts: 1
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 Posted:
Tue Sep 26, 2006 7:18 pm Post subject:
My son plugged a 110v television into a 220v outlet! |
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He says he heard snapping and buzzing and of course there is the smell of burnt electronicss. It is a relatively new Emerson television with a built-in DVD player.
Is there any hope of having it repaired, or would it be more cost effective to buy a new television? I am living in Jordan and brought a bunch of electronics with me and this is the second item that has been fried in this manner...the first was a rice cooker but it still works.
Is this a routine fix, or has more damage been done to the television than can be fixed by your average tv repairman?
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neon
Joined: 25 Feb 2006
Posts: 570
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Wed Sep 27, 2006 10:55 am Post subject:
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| He probably fried the whole power supply. Can you repair it sure. Maybe in jordan is possible because of cost of living. Here in the USA not a chance i will not repair a CRT tv even my own.Cheaper to replace it. SORRY. |
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vadim_kulya
Joined: 30 Oct 2006
Posts: 2
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Tue Oct 31, 2006 6:58 pm Post subject:
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or fuses or whole power supply. check fuses first . good luck.
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neon
Joined: 25 Feb 2006
Posts: 570
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Thu Nov 02, 2006 6:35 pm Post subject:
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| IT IS obvious to me that fuses did not save this guy burn smell of electronics means bad news fuses are not that fast. And did not blow at all. And why make possible to plug 120 into 220v and viceversa a $2.00 receptical would have save you TV or anything else. |
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Electrofix
Joined: 01 Jan 2008
Posts: 3
Location: Worcesterhire, UK
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Wed Jan 02, 2008 11:09 am Post subject:
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I assume that the TV uses a switched-mode PSU. If you're lucky, the damage will be limited to the bridge rectifier and the series switching device (FET or bi-polar). However, more extensive damage is a possibility - such as the driver cct. for the switcher, the horiz. scan output transistor (and its driver) - and other items - depending on the design of the set.
If you're really going to get serious about repairing this set, you will need a circuit diagram / schematic plus the necessary diagnostic test kit. Even with these things, if the attempted fix (based on the above) isn't successful after, say, a couple of hours trying, I doubt whether it will be economically-viable to continue.
And be careful when working with it! The SMPU may not be isolated from the mains supply! Use an isolating transformer for safety.
Good luck!
Electrofix.
_________________
If an electrolytic cap. explodes and there is no one there - does it make a sound? |
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