It had two blown fuses and a cut power cord when I salvaged it, I soldered on a new power cord, replaced the fuses and the tv ran great for about 8 hours, then shut it's self off. It turned back on and shut it's self off immediately. We took a look at the fuses and they were fine, let it sit for an hour and it worked for another few hours before turning off. Every time it's turned on it turns it's self off sooner, no matter how long it's been turned off or unplugged. It was unplugged over night, ran for 40 minutes and turned its self off, there is no noise or light associated with it's being turned off, but when it comes back on there is an upside down rainbow on the top of the screen. Any help is greatly appretiated. AJ
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First Check the power cord to TV, try a different one.
If you are experienced you can take the back panel off the TV
- Internal fuse inside TV might have blown, its on the power supply board (white fuse, slow blow)
- Buldging Capacitors or they may have leaked brown substance on top or circuit board
If you are going to do this yourself make sure you do not touch the contacts on under side of the circuit board that connect to the LARGE capacitor (looks like a giant battery)
Replacing the fuse is easy no experience needed, make sure you replace it for an exact match, it will say the rating on the metal caps at each end of the fuse.
If it is not the fuse you can de solder the blown capacitors and replace them with new ones.
Total Cost of repair if you have soldering iron and tools will only be about £3 or $5
Otherwise get a pro to repair it for you, but you might pay around £80 or $120
You can note down the model name on the power supply circuit board and Google it.
You might be able to buy a replacement power supply which will be cheaper than paying a TV repair man to get the part and fit it
Just check your main power supply socket. If it is ok than just open your tv back cover and check the fuse. I am sure the fuse is burnt. If the fuse is also ok than you need to consult a technition. But mostly it is the problem of burning fuse
hi....hope this can help... try to check the power cord, see if there's a cut or open wire... there's a possibility a open or no continuity of wires from plug to the power supply due to frequent bending of wires.. so no AC voltage goes through the wire.. second check for an internal fuse..if it has a open wire (hair like) inside it is visible inside the glass tube...if it is open or has light discoloration..replace fuse w/ same type/ value...if it is extreme dark discoloration you may have a shorted bridge type rectifier or power MOSFET...i suggest that if you have replace the fuse and tested the unit and still blown the fuse...do not attempt to replace fuse and test the unit..it may cause further damage to the TV..ask assistance for repairing the power supply, it is repairable than to purchase a new power supply and gonna cost you less...good day... please rate and vote...
U know basic electronic's,and u know how to do soldering?Have soldering iron,tools and solders?The power supply board,the board that the power a/c power cord plug into it.That the power supply board have these parts call capacitors are dead.These capacitors alway bulges up on it top or puff on it top.Check all around the power supply board and it supporting boards.Replaced these dead leakage bulges up on it top or puff up on it top.Or tries websites like Shopjimmy.com,Ebay.com to buy and replaced the whole refurbish power supply board.
The problem is not in the bulb but in the display coolant... http://servicemanuals.vstore.ca/product_info.php/pName/phillips-crt-coolant-replacement-kit/cName/repair-kits...The step by step procedures and illustrations are included in the kit.
After taking the screws out and removing the back, you will see a power supply(where master switch and cord connector are). Remove the 4 screws on the aluminum cover plate to gain access to the fuse. Using a voltmeter, with the power on and switch on, measure the voltage on each side of the round fuse located just behind the cord connector. If voltage is 0, fuse is good. If voltage between 115 and 125 V, replace fuse or have fuse replaced. I think it is a 6.3Ah 250V class fuse that is soldered into the board. IF YOU ARE NOT FAMILIAR WITH SOLDERING TECHNIQUES AND PRECAUTIONS, DO NOT ATTEMPT TO DO THIS. IF YOU ARE NOT FULLY AWARE OF ALL SAFETY PRECAUTIONS NECESSARY TO MAKE THIS REPAIR HAVE A QUALIFIED TECHNICIAN DO IT FOR YOU!!!!!!
If a new power supply is needed, contact me and I can point you in the right direction.
Try the power supply. Look on the one in your TV for the part number ; mine is PH3501705441. I ordered one from partstore.com and it was less than $60 shipped. Hope this helps, mine works fine now........and I have a 50P8342 chassis PTV 916
Power supply seems to be 12 volts. I have ICFCD855V's and the power cords on both broke just past the strain relief on the power supply. That shorted the supply and blew the fuse (1.6 amp). I soldered in a new fuse and the supply (with no load) puts out 12VDC. Since it happened to 2 in my house I can't believe Sony doesn't have a recall on these things