Question about Sylvania 6427TE 27" TV

4 Answers

My tv power does not come on

My tv fuse blows out the moment i turned the power swich on .i have tried to replace the defective fuse two times using new fuse from the market.The old fuse size is 3.15 and i used the same fuse size for the replacement but the problem still persists.What do you think is the probable cause?

Posted by on

4 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: My tv power does not come on

This set uses a switching power supply. Usually when there is a short on the output side of the switching transformer the supply will just shut down and refuse to operate but normally will not blow a fuse. If the fuse blows suspect a problem with something shorted on the input side of the switching transformer such as I801 regulator IC, diode bridge D801,or other shorted component. Perhaps someone else could tell both of us any other part that could cause the regulator to blow and should also be replaced to prevent regulator failure in the future.

Posted on Dec 05, 2006

Re: My tv power does not come on

Take it to the repair shop and they are going to fix it for much $$$$$$$$$$$$

Posted on Oct 08, 2007

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers
Re: My tv power does not come on

If it is blown the main fuse a diod is blown on the recterfier and most lightly the power tranie too and chech the main cap it could also be on the degouser circut the termister could be gone oc

Posted on Jan 11, 2007

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 1,476 Answers
Re: My tv power does not come on

You have a short somewhere in the set. The majority of the time it is the Horizontal Output Transistor and probably the flyback but it could be anything. I've seen vertical ICs short, electrolytic capacitors, audio IC's, you name it. If the HOT checks Ok you will need to do systematic troubleshooting which may be beyond you're abilities. If so, hire a professional. In any case remember safety. These sets can be dangerous. Good luck.

Posted on Jun 23, 2006

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

In my tv fuse is blowing off immediately

If fuse blows off immediately, i means that there is a short circuit occured in your telivision. This can mainly due to some diodes or regulators inside your tv. An overvoltage, spikes, ie [sudden high rise and go low], in the supply votage in your home, could damage power supply regulator components inside your tv.
All Sony Tvs has high accuracy power regulating systems inside. It is an onboard assembly, usually take 1/4th of the area of the TV. In older Sony TVs, this section was built in with use of transistors of different types. But your tv is not so old, so its power supply system is built with an STR, an Ic meant only for power regulations. Normally it willb numbered STR S6707, STR S6703 etc; according th the working voltage of the main board, and screen size of the TV.
This STR may get shorted due to power fluctuations, or any other reasons. A I mentioned above this is an Ic look like small squuare biscut of about an inch in square, and will be black in colour.
The rectified main power supply is given to it via an SMPS transformer [Swiched Mode Transformer], and the Ic will swictch it on and off at the rate of sbout 25KHz or more, and this transformeres secondary voltage is used to power up the other part of the ciiruit board.
If the fuse is blowing as soon as the set is switched on, this Ic will be faulty [Shorted inside]. If you put an another fuse, it also will blow up due to short. It is not good to play with power supply system by doing this as it may harm to other components also.
You have done it I thinks. Here in India, we gets 220VAC as home power supply. Sony TVs used here have a fuse rateing of 250V 3.5Amps. If your household supply system voltage is also this you must put only this rated fuse. If it is 110 or 120VAC, the fuse rating may differ; and will go upto 6 to7 Amps. More than this rated fuse should not be used.
You just do one thing. Just open the back cover of the TV, locate the power regulator section, and chech whether any main rectifier diodes for leak. There may four of them. In some sony Tvs, rectifier stalks are used. Check it for leak. If thery are all good, measure the resistance across the main filter capacitor with a multimeter set in Ohms range. If the STR said above is short, the meter will give full scale deflection. Unsoder the STR and pick it out after loosing its fixing screws to the heat sink. Again check the resistance accross the main filter capacitor. It must sho a low deflection or no deflection at all. Never replace the STR with a new one as there may be some other faulty components in that section. Usually when STR fails, there are some Zener diodes, Wire wound resistor etc will also gets shrted. If you replce the STR before checking them for fault, the STR you puts in will get shorted as you swich on the set. It will take just 1/100 part of a second.
So check all the components related with power regulator system, and then only repace the regulator. Caution: Keep chlidren away from you while you open the tv. Never touch any part of the circuit board while power supply is there. Plug out from the wall socket each time you touch the printed circuit board. As your Tv screen size is 32", an approximate of 25KVDC [15,000VDC], will be present at the first anode of the picture tube while it is working. It is too dagerous to contact.
If you haven't through knoledge, skill and patience, never try to repair it. If you knows to follow its schematic digram, buy one book and follow the circuit.
Keep an adult beside you as you try to repair your set, as a precaution.
If you have any doubt, report to Fixya, they will give me alert. Ok

Oct 20, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Power board in magnavox 37MF231D blows fuse right away. Caps are good on board and fuse still goes when disconnected from TV.

Then you have a shorted regulator circuit. the best bet is to replace the power supply board itself. The part number is 313815864961. Please take a few moments to rate my answer, Thank you.

Nov 17, 2009 | Philips Magnavox 27MS343S 27" TV

2 Answers

Panasonic ct-32sl13g blowing fuse by power supply

You will need to remove the back of the TV. Don't worry, it's not that bad.

There are 4 screws across the top, one on each side, one right next to where the power cord goes into the back of the case, and the two more by all of the video connections **These are the most important to remove because they attach the main board to the back of the case.

Once you have remove the screws then the entire back of the set will slide off. If you look where the power cord attaches to the board you will see a small fuse. This is a 6.3 Amp 125 volt fuse. You can replace it with a 6.3 Amp 250 volt fuse from your local Radio Shack. A four pack costs between $3 and $5.

Make sure that you check that it works before putting it all back together. Check for any loose connection cables while you're back there. I found a few when I did this.

Good luck!

Apr 15, 2009 | Panasonic CT-32SL13 32" TV

1 Answer

27' magnavox tv model 25e503

you need to check the primary input ac connection e.g fuse and then measure if you have 330 volts across the filtering capacitor..if this is ok or the fuse blows then disconnect ac-line and check pwer supply eg smps swiching transistor...probably gone to heaven..and replace it and optcoupler..i.e. refere to eventual kit from philips they have repair kits for your tv! may be a "standard" problem..if you can get a copy of servicing the technical manual for your tv it is best...ron

Mar 03, 2008 | Philips Magnavox 27MS343S 27" TV

2 Answers

TV will not turn on

Assuming you are absolutely sure the TV is getting power,
If you have an ohmmeter, measure the resistance between the two prongs on its plug. If no conductivity (over 1 meg Ohm) the fuse inside is popped. Take the cover off, look in the area near the power cord, it is the usual 5AG type (glass cylinder) fuse. If you replace it and it pops again then measure all the diodes in the rectifier circuit (near the fuse).
Many times power transients will just blow these input power devices. However, many times it will go much deeper and get the TV's processor brain. If the TV is anywhere near 10 years old, I wouldn't go any deeper than the input power circuit.

Jan 18, 2008 | Standard (CRT) Televisions

3 Answers

JVC AV-36260 TV Problem TV won't turn on

  • blowing fuse is a short circuit problem in your tv.
  • please do not replace fuse unless you know the reason otherwise it may damage tv.
  • fuse blowing is due to
  • main filter capacitor
  • power output transistor sort or regulator short circuit.
  • good luck

Oct 21, 2007 | JVC AV-36260 TV

1 Answer


Possibly a resistor that's becoming defective... it's changing value thus increasing current. like if the resistor has a rating of a 10k Ohm and now it's changing to a 30K Ohm and the current (amps) is supposed to be around .50Amps and now it's rising to .75Amps or higher, so it would blow the fuse so as not to further damage any other high voltage or sensetive component. Is the fuse you are replacing the same as rated for the tv? ie; 250V 1.25Amp FB (fast blow) or SB (slow blow) it should say on the circut board where the fuse plugs into.

Jul 17, 2007 | Zenith C27A24T 27" TV

4 Answers

Samsung Flat Screen Won't turn On

yea take your tv to a tech tv has a problem in the power supply there is 10mf cap in the power supply that likes to go bad replace it if that model does not have it check regulator and the microchip.however your problem lies in the powerand related circuit.good luck

Apr 02, 2007 | Samsung TXN3275HF 32" TV

1 Answer

My tv power does not come on

When a fuse blows out thats an indication that theres a short in the set and the fuse is installed there to prevent a fire fom happening in the set. unless you know the HI Voltage safty issues with a tv set there are no user serviceable parts inside these sets and these tvs should only be worked on by trained service personel! The problem that occouring here could be a shorted or leaky bridge rectifier, a shorted and or a bad horizontal output transistor as well as the flyback transistor and the trsnsformer, or a bad componet in the power supply.. Good Luck

Jun 23, 2006 | Sylvania 6427TE 27" TV

Not finding what you are looking for?
Sylvania 6427TE 27" TV Logo

758 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sylvania Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

66499 Answers

Kenneth Walker

Level 2 Expert

133 Answers

Brad Brown

Level 3 Expert

13362 Answers

Are you a Sylvania Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides