TV blew fuse. Replaced with 125v 5 amp from a 33 inch Toshiba that has gone bad. The 5 amp also blew. Purchased new 4 amp fast blow fuse for unit, now nothing happens, i.e., no blown fuse, no circuit light, no energizing of picture tube as HV power supply not responding. Appears to be power supply problem, but without schematic, I can only guess where to check. All capicators that I guess to be associated with the PS are OK.

T5.0AH 250V used in this TV is a ceramic fuse Time delayed (Slow-Blow) and the dimensions are probably: 5 mm (3/16 in) x 20 mm (3/4 in). You just measure the old one.

Regards GJ

Any decent electrical shop should have those fuses. They tend to come in 20mm and 30mm lengths. You will need to know which. Also there are fast blow and slow blow fuses. If you have the originals and you can see the remains of a coil then you want slow blow. Otherwise just replace them with fast ones. The 1.2 amp fuse can be replaced with a 250 volt fuse.
So you want a 250ma 250v fuse.
and a 1.2A 250v fuse.

Your degausing thermistor is bad and needs to be replaced. The part number is D4DDF1R50001

Once that is replaced put a new fuse in put the set back together and you should be good to go. You will need to replace the fuse with the correct size and its part number is
XBA2A00101F

Shorted power supply/module is most likely problem.

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!

if you plugged a 125 volt tv in to a 220 volt outlet you more than likely fried alof of the componets in the tv. Putting a bigger fuse in there is only going to increase the risk of it catching on fire so i would not recomend that. you might replace the power supply and cross your fingers and hope that nothing else cooked when the 220 volts hit it

This condition, may be produced by defective components (Q506, Q507). you can remove those transistor, replace the fuses, power-on and wait for relays click. if the fuses not blown again, them replace both transistor.

Hello sjday62

It sounds as if you have a component that has changed value enough in value to cause a high current draw, but has not completely shorted out. this phrase from you "so I did a stupid thing and bypassed the internal fuse and it turned on and worked" Not as stupid as you would think because it confirms what I said above, the 6.3 amp fuse tells me that the current draw normally is about 3 amperes since the normal rule of thumb is to double the value of the current to select the type of fuse. a five amp fuse should as well as a 4 amp fuse (it's best and recommended to use the exact fuse type). Now back to your issue. I would suspect that a transformer in the power chain has developed a shorted winding, or a capacitor begun to develop a short or excessive absorption.

I would suggest that you have the set looked at by a qualified TV technician.

I hope this helps,

Thank you,

Shuttle83

if you have replaced the fuse already then you know how to open the back of the set . The problem is more than likely one of the diodes in the rectifer circuit . They will be the four large black components The bad one will have to be desoldered and a new one soldered in its place . It will take a small amount of technicial ability but can be done easily at home.

Hi, If the fuse physically fits into your unit then it will work. However- - - WARNING! Although 6.3 amps on a 250v fuse will allow the current to flow it will not afford you the circuit protection you require for a 125v circuit. If the circuit develops a fault then there is a danger that you burn out the circuit before the fuse. As you have already blown one fuse I would suggest tracking down the fault before you do any thing else.
The Scrivener.