Question about Philips 27PT5441 27" TV

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Blows Fuses Philips 27PT5441/37 Blows Fuses. Posts suggest some kind of "PTC" device. If this is the surge MOV protector it is not the cause of the problem in this case. Are there other known issues with this model that cause the blown fuse issue?

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  • jhair543 Feb 25, 2009

    The cause has been discovered to be a poorly designed Deguasing Circuit. The Positive Temperature Thermistor in this circuit had been employed as a dual 3 ohm thermister package running in a parallel configuration of its internal thermistor disks. Removing one of the thermistor disks inside that 3 legged device and connecting only one of them has solved the over current issue. The dequasing circuit still works sufficiently and the fuse no longer blows.

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Hi

They have so many reasons why blown fuses in TV... all you have to do is to check the shorted semiconductor like regulator and drivers..

Thanks!

Posted on Feb 25, 2009

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Wall ac in off position plug in surge protector blows instantly


It may be possible the it has fried the surge protected internally causing it to short out or blow when plugging in. I would try using another surge protected if you have one or if possible replace the cord going to the unit with a new one and see what happens. Also possible that the outlet your using went bad during the storm as well. Don't know 100% but should be a couple tips to help get you going.

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Tonight I went to turn on my TV 10 month old Philips and the display is showing white screen with several multi-colored lines running horizontally across the screen. The sound works and corresponds to...


It is my pleasure to guide you.

Since you have said that the TV is 10 months old, do not do anything to it as it is still under warranty. If you do anything that will void the warranty. Take the TV back to the store you purchased it from and explain to them what you have stated here. Do not forget your receipt as most store will need that to prove in warranty. They are required to check out the TV to make sure it is works. If they find out that the TV workmanship is at fault they will replace the TV. They may have to send it in or your may be required by Philips to box it up and return it. I also suggest you look for an authorized service center for the Philips TV in you city.

Since you are using a surge protector then your electrical connection box is may not be at fault because if it were the surge protector should have tripped. Since you did not say that the protector did trip I take it for granted that it did not trip.

"Is there something I can do to protect TVs from whatever might be causing these problems?" I suggest that you have a professional electrician to check you wiring at that point of use. If you live in an apartment then tell you manager of the problem.

Please post back that you are successful or that I may be more helpful.

Good luck

Jun 05, 2011 | Philips 22PFL4505D 22 in LCD TV

1 Answer

Technician a says that a line condition protects a computer system from high-voltage surges and low-level voltages.technician b says that a surge suppressor protects a computer system from high-voltage...


Hi,
Line conditioners and surge protectors both help to prevent voltage in your devices from shooting up and damaging computers, game consoles, or other machines which use a power cable rather than batteries. In everyday use line conditioners can prevent changes from voltage in making the lights or dim or brighten, meaning you can have a consistent supply of 120 volts per second.
Surge protectors on the other hand are smaller and cheaper than line conditioners, these prevent high-voltage from being transmitted to your device, so excessive power doesn't cause your machine to die, or suffer catastrophe. Surge protectors needs to be replaced every few years so in the long run this can make them more expensive than line conditioners.

For more information please check this out
http://www.doityourself.com/stry/line-conditioners-vs-surge-protectors

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I HAVE A BROTHER MFC7345N WHICH WAS PLUGGED IN WHEN A POWER SURGE OCCURED. NOW THE PRINTER WON'T TURN ON.


youre printer mainboard just got fried. you are going to have to buy a new printer, unless the printer is still under warranty. did you cause the power surge? and did you have your printer plugged into a surge protector strip? remember these things when you go to buy a new printer, get a surge protector strip. not the cheap kind, those arent surge protectors. those are outlet additions.

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1 Answer

We didnt have a surge protector on our tv we purchased from home shopping net. and lihtning came in the line and i guess hit our tv can it be fixed or is it worth fixing price wise i hate to throw it away...


Look at the power supply module, most of them will have a surge protection devices (called MOV, same as used in common surge power strip but cannot handle big surge that power strip can handle) installed to protect minor surge, it should blow the fuse. Once MOV blown, it will more likely stay short circuit, if you put the new fuse in it will blow the fuse right away. You need to see if the MOVs blew up any sign of blown up components.

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Does my samsung tv keeping turning itself off because of not having plugged it into a surge protector or is it more a fault with my tv


It is a fault with your power supply module actually inside the tv...take it to a local service center or if its under warranty take it back. surge protectors help prevent issues like this occuring due to damage to the power supply from surges but not having one wont cause these problems unless it has recieved a surge.....in future i would use a surge protector on all your expensive appliances, surges and power fluctuations are very common in mains power i live near the mines and we have power problems all the time!! hope this helps,ben

Aug 11, 2009 | Samsung LE40R74BDX 40 in. LCD Television

1 Answer

Surge protectors


Hey Laduell,

Before anything else, it's probably best to explain the differences between power surges and flux. Power surges (also called voltage or electrical spikes) are generally caused by a sudden, massive increase or decrease in the voltage flowing through an electrical circuit. Flux, on the other hand, can be defined as the actual voltage flowing through a circuit at any given time.

Whenever an electrical device turns on, turns off, or changes modes of operation, it can cause slight disturbances or differences in the voltage flowing through an electrical circuit. Exactly how much of a difference is made may be dependent on the type of electronic device attached, though major electronics and appliances will have a larger "pull" than smaller devices, like clock radios. The more devices are attached to the same circuit, the larger these voltage differences may become.

This fluctuation in voltage - combined with other electrical, magnetic or radio frequency interference ("noise") - has been known to cause problems or even damage in some electrical devices. To prevent such damage, many manufacturers may include "noise reduction" or "EMI/RFI protection" features in their surge protectors.

As both Dynex and Monster Cables appear to include such a feature in many of their products, the price difference you are seeing may simply be related to the number of additional features that the Monster Cable surge protector offers, though this cannot be guaranteed.

If you're in doubt about your purchase, I would strongly suggest contacting either manufacturer for more information. Most manufacturers are able to provide you with detailed descriptions of their product features, and one of the two may be able to point you towards an online FAQ if one is available. Dynex's toll-free hotline is 888-305-2204, and Monster Cable can be reached at 415-840-2000.

Hope this helps you out.

Sincerely,
Aaron
Go Ahead. Use Us.

Jul 18, 2008 | Televison & Video

1 Answer

Fuses


Hi there!

Dead short in the power supply, possibly the rectifier or the PTC has failed. PTC located in the Primary supply at the point where the coil around the tube plugs into the Main board. Two terminals to be exact. Normally cream in colour if it is an original Philips PTC. If the rectifier is short you may expect to have more items blown. Good Luck, Regards, JUS004

Mar 22, 2008 | Philips 27PT5441 27" TV

1 Answer

Philips 27pt5441/37


Hi there!
Dead short either in the power supply or rectifier, or PTC faulty.
PTC is cream in colour close to the mains on/off switch. Regards, JUS004

Mar 22, 2008 | Philips 27PT5441 27" TV

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