Question about Emerson SB350 13 in. TV/DVD Combo

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Is there a specific solid state part known to make the fuse blow in model number sb350

I unplugged my TV last night, and when I plugged it back in and turned it on it squealed, and a 1 ohm resistor blew, and made a bright flash and loud noise now it wont turn on. after we replaced the 1 ohm resistor with a new one and we checked 220 microfarad electrolytic capacitors and they were both good. we also checked the 4 diodes near those capacitors, and they were good . when we plugged the set in the and this time the 4 amp fuse blew... now we are wondering if there is a high power semiconductor device known to fail in this particular model TV that could be cause the fuse to blow..

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It sounds that there is some short circuit with its main power supply regulator circuit. A detailed check is necessary to locate the exact faulty component/s. If you are sound in electronics, you can do it by yourself. If not, contact any service technician. If you wish to get more details, check this site. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you check the site in Timeslide option, which can be selected from the drop down list at the top left side of the display window, it will make search easy.
http://electronicshelponline.blogspot.com/

Posted on Apr 23, 2013

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Posted on Jan 02, 2017

  • 163 Answers

SOURCE: Unit blows fuses

its a short in the power supply but ist realy care?, whats the price of this unit?...good luck

Posted on Aug 11, 2006

jomaru
  • 337 Answers

SOURCE: tv wont turn on

The sound can be called screaming from the power supply,it senses a short and creates a frequency you can hear,the set has a problem and it needs to be repaired,I will check the horizontal out put transistor for a short,sometimes it goes bad without a reason and sometimes the high voltage transformer is also bad and both have to be replaced but first the transistor only if it goes bad again then you replaced the transformer too.Seek assistance from a servicer if you are not too familiar with tv service,it can be dangerous.

Posted on Oct 02, 2006

  • 308 Answers

SOURCE: TV turns on and off by itself.

That Emerson was actually made by Funai, and you may have to contact them for service. Emerson used to be a good brand, but they seem to just want to sell or lease their name to any company that wants to use it. Generally speaking, if you're looking for consumer electronics, don't shop at a store whose name ends with Mart. Even though your set is over a year old, it would probably not be worthwhile repairing it. If you decide to try anyway, their telephone number is 1-800-242-7158.

Posted on Jan 30, 2007

SD Tech
  • 14553 Answers

SOURCE: Emerson EWC20D3 20 in. TV/DVD Combo what is that loud whining noise from the back

What happens in this case is a small transformer or the high voltage transformer vibrate hard enough to make that sound--not loose or bad but can cause the vibration.

I have seen in customer's homes where it was loud enough to chase cats right out of the room even in a large room.

Two ways to deal with this----with the set apart locate the part by ear or even probing with a plastic tool---when you press close to it, the sound will diminish or go away.

Believe it or not (in our shop) once located we use a hot glue gun to take the sound away---

usually if very loud it is the high voltage transformer on the main TV board (see photo of a typical one) not on the black part but on the iron like (it is a different material) core that looks like a U bolt.

it can irritate but poses no danger.

3_28_2012_10_18_50_pm.jpg

Posted on Mar 28, 2012

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