TV repair help

[crazybuckfan40]

I am guessing that maybe someone here is familar with tv repair, or might be able to help me out.

Really the only thing that I can say to explain is that when the power is turned on a little green light comes on, basically like every tv, but it won't get power and then the light goes off.

Any ideas, and does anyone know how much it would cost for a technician to take a look at it?

A new tv has already been purchased, but if I can fix this one, then I will have 2 and one for the bedroom.

Any help?

 

[Best Buckeye]

it sounds like what happens when the tube goes bad. all you can do is take the back off and check for loose connections. Do not touch the back end of the tube with your bare hand or anything that has to do with any capacitor. It will light you up. If you have any concern about it don't do it.

 

[sandgk]

Sounds like a main power supply failure to the tube itself, possibly a failure on one of the controller boards - with the small green LED power light going out after a period of time due to no activation of the main CRT.

If you have a make and model it is often possible to get a reasonable indication of where to look from one of the online repair forums.

Absent that model-specific information a reasonable generic starting point is this site ..

Word of warning - it is often less expensive these days to buy a good new model than buy and install the components required to resurrect the dead set. Though, if the part is a small one you may get lucky, many times an entire controller or circuit board needs replaced and that is when things become more expensive.

 

[Taosman]

TVs still have very dangerous capacitors in them!
Beware!
These things can hold a deadly charge for many days!

Safety Guidelines

The set of guidelines below is not meant to scare or frighten you, but to make you aware that working inside of a CRT type TV or computer monitor can be deadly from the line connected power supply, as well as the High voltage power supplies (capacitors). Please follow all of the safety guidelines.

• Wear rubber soles on your shoes or wear sneakers.
• Set up your work area away from any grounds that you may touch by accident.
• Do not work alone! If there is an accident or you get shocked, someone else present could call for emergency assistance.
• If you need to work on a circuit or measure a component, make sure you discharge the large power supply and High voltage capacitors with a 2 to 5 watt 100 ohm to a 500-ohm resistor, as these capacitors can give you a jolt and possibly stop your heart (this is a high current DC). Never assume anything! Always check it out with a voltmeter across the capacitor. You do not need to discharge the smaller 150+ capacitors in the circuit that are below 35 volts.
• Do not wear any jewelry or anything metallic that could make contact with the live circuitry or any moving parts.
• Never strike or hit the glass envelope of the picture tube, as this would cause an implosion. An implosion would send shards of glass in all directions at a very high speed.
• Always wear eye protection when working on the back of a TV set.
• Always connect and disconnect test leads from your meter or other test equipment with the set unplugged.
• Attempting to repair a set when you are tired or sleepy can make you more careless.
• Do not take shortcuts.