Question about RCA TruFlat 27F520T 27" TV

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Showerlux bodyzone envy shower system instructions

Our plumber cannot regulate the water temperature of the shower. it runs either steaming hot or freezing cold. It has been installed correctly he tells me. This is a new shower (expensive) and have no other experts locally

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You probably need a better water faucet that controls the hot and cold mixture.
and this is not a tv problem

Posted on Oct 07, 2008

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Poured old fiber suppliment down sink,clogged drain. what can desolve the fiber suppliment?


wow, didnt you mother ever tell you to never pour anything down the sink that could clog it??
Will hot / boiling water work? have you tried that? You may need to call a plumber my friend. I dont know if MR Plumber would work either. but be carefull not to create a mixture that might be explosive. Try Liquid draino or boiling water before this drys on ya.

Apr 10, 2012 | Standard (CRT) Televisions

1 Answer

My TV always cut off by it self.


Check to see if the back of the TV is hot to the touch when it shuts off. If so, your TV may be saving itself with a temperature sensor. This feature will keep TV's from melting down literally.
If this is the problem. I recommend running a fan over the back of the TV. Some TV's unfortunately are poorly designed and don't allow for proper ventilation.

Jun 24, 2011 | Standard (CRT) Televisions

1 Answer

TV won't turn on, standby light blinks seven times over and over


Hello
Seven continous blinks denotes that your Sony TV has some high voltage more than normal inside its final anode of your TVs picture tube.. When high tension volltage exceeds abve 33KV [33,000VDC], to the final anode of the picture tube, TVs microcomputer Ic will detect it and get it shutdown, to prevent it from further damages.

You have to check its power regulator section for this fault. Usually Sony TVs uses STR regulated power supply regulation in their TVs.
You must open the back cover of your TV, and locate the power regulator section, sometimes be as in a seperate board or in the main board itsef. Check for any loose solderings it it. As components in the power regulator system will heat up during working. As it heats up and cools down for several times, some loose soldering may occure in it, and is usual. It is difficult to locate the exact point of loose, and is risky too, as the power supply regulation side is directly connected to mains supply and will always be "Hot", so i recomends you to resolder all the points, especially the points of high watt resistors in it. Resolder the the STR legs also. Sometimes the STR itself may need replacement. If so go for the same number and type. This might retify your problem.
Normally Sony 32" TV has a working voltage between 125 to 140vDV, at the secondary side of the power regulator. It it exceeds this type of problem will occur.
Take all precautions we take when work with an electrical equiments. Keep chlidren away from you, and note even stand beside you when you do works. Keep an adult beside you as a precatiounary measure. As high as 27KVDC [27,000VDC] points are there inside your tv, while it works. Take care. Never use metal a metal chair. Ok

Oct 26, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

2 Answers

Blown up tv (philips)


There are fuses always inside TVs. The main filters (capacitors) are probably damaged and the regulators are probably blown. Chances are the rest of the set is OK. Sudden bursts like that usually kill the fuses very fast and the regulator takes the brunt of the load. With a multimeter, you could probably check regulators for shorts and replace fuses.

May 04, 2010 | Philips Magnavox 27MS343S 27" TV

2 Answers

I have a Sony Model KV-HF21N80 and the problem is the horizontal output d2578, if change this it will runs normal and I tried to operate for how many hours but the problem is the next day if I will turn on...


I assume this is the exact replacement transistor? If it is not then use the original part with no substitutes. Next be sure the transistor has heatsink compound applied and is securely tightened to the heatsink. You say the B+ is normal, but does it remain "normal"? I would monitor the B+ also at power up to be sure it is being regulated. Another critical issue is the drive signal at the base of the HOT. If you have a o-scope & schematic check this carefully not only for amplitude, but wave shape & timing. This determines the on/off time of the HOT. Check components in the base circuit (there are only a few) as perhaps they were damaged when the HOT originally failed. If you have a high voltage meter make sure the voltage is within spec. the retrace tuning cap. in the collector may have changed value allowing excessive amplitude of the pulse. One final thought, after running the set for a time is the HOT excessively warm. It should be slightly hot, but not to the point of burning your finger. If it is too hot I would be suspicious of the drive signal, and or heatsinking.

Nov 25, 2009 | Sony Standard (CRT) Televisions

1 Answer

Does not have any picture or sound


The 2 blinks usually means an over current problem. This can be anything from a shorted horizontal output transistor to a shorted regulator. If you have no experience with TV repair, I would suggest you get a detailed estimate from a local servicer. If you have some experience, look for a shorted HOT or regulator and let me know what you find.

Dan

Feb 20, 2009 | Sony KV-36FS100 36" TV

1 Answer

How do i know wether the thermistor is shorted / open, defective?


Hello clydex,

Yes you can use an ohmmeter, however you will need a hot air gun to. Let me explain: There are two types of Thermistors +Temperature coefficient and - Temperature coefficient.

The +temperature thermistor reacts this way: as the temperature goes up so does the resistance of the device this is used when dealing with degaussing coils as the current passes through the coil it heats up the thermistor until the thermistor cuts off the current needed to run the coil.

The -temperature thermistor reacts this way: as the temperature goes up the resistance decreases, this can be seen when dealing with circuits that are designed to short out when excessive current is present. The excessive current causes the thermistor to heat up and the the resistance drops causing the device to short out.

Here is how to do it.: connect the device to the ohmmeter and use the heat gun to heat the component up the value of resistance should rise or decrease.

I hope this helps,
Thank you,
Shuttle83

Dec 23, 2007 | Standard (CRT) Televisions

3 Answers

Toshiba CF30E50 TV shuts off


Best first step is: Good visual inspection = look for hot spots
on PCB, check caps in those areas + solder any/all bad connections,esp. low voltage regulator pins.Look the whole
board over with magnifier = solder,solder,solder...T.

Oct 25, 2007 | Standard (CRT) Televisions

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