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Re: Keeps blowing fuse
It has a short circuit somewhere...
Not sure if this is a CRT, LCD or Plasma TV but the two common causes
of shorts for CRT's are the Horizontal Output Transistor (HOT) and/or
the Flyback Transformer (Could be both). As a general rule if the
flyback has visible cracks in the case they should be replaced. It is
also a good idea to replace the HOT if you're replacing the flyback as
it could be weakened and may not last much longer itself.
Other areas to check for all types would be any Diodes in the Power
Supply Circuit. If a diode is open it can cause the fuse to blow. Note
that a diode itself will not short, but an open diode can cause a fuse
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The fuse is located on the power supply board. It looks like a small glass tube with metal caps at both ends like the ones in the image below on the board next to it you will see a small marking that says the specifications of the fuse. Ex: 10A(Read 10 Amperes), 120V. The replacement you are gonna purchase should be of the same specifications. Make sure you unplug the tv from the power supply before replacing it so that you will avoid the risk of electric shock. A positive rating for the advice provided will be highly appreciated and I will be glad to assist you further if you need more help.
Ur hight voltage FBT,the flyback transformer is dead.The big block of plastic with a red wire with a cap that hook to a CRT.U know how to solders?Replaced the FBT well solved ur problem.But the FBT it hard to find this day,because tv compannies don't manufactures parts small CRT tv anymore.Ur only luck is find it on Ebay.com.
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.
Once you take the back off there is a glass gma fuse withing a few inches of where the power cord plugs into the board at. This should be a 6.3 or 6.5 gma fuse. Very common to blow in your model because the degausing coil is a little to big for it. There are other reasons for it to blow but 99% of the time you change change it and the set will work again. Let me know if you need more help or info!
if you open your tv , you have to put back the board, there are 2 clips one on left other in the right that keep the board to the case of tv( you have to disconnect the cable AC before open the tv) you can see the fuse easely ( if i remember good there is only one fuse about near the switch on /off
This set has a common problem with th main fuse opening for no other apparent reason... One of the few exceptions to my corner-stone statement that a fuse is never the cause only a symptom..
Don't replace it though with the same type grade, use a 6.3a slo-blow gma type - available at Radio Shack... Try that and if everything works you're back in business.. If not we nee to find a cause...