Possible Causes of a Slow Turn-On Time
These are the things that might cause your TV to take a long time to turn on, and what you can do about them. Turn-on time for a TV can be anywhere from around 15 seconds to about 8 minutes, depending on how old the TV is, how good it is, what was done to it and what was done by the person doing the repair.
If your TV is slow to turn on, there is a chance that one of the things below will be causing it.
1. The power supply turns on.somewhere between 15 to 30 seconds after the turn-on button is pressed. TV takes about one minute for a good power supply to start up and then about 3 more minutes for the main circuits to be fully operational.
What can you do about this? Nothing. If you wait a little longer, it will turn on by itself.
2. The board or the main circuit board has been voltage boosted. Voltage boosting takes about 8 to 10 seconds for the high side of the AC to go up to full power and then another 8 seconds or so for the TV to come on. If you push your remote just before this time, it will not work until after this “delay”.
What can you do about this? Nothing. If you wait a little longer, it will turn on by itself.
Possible Solutions to a Slow Turn-On Time
So why does a TV take a long time to turn on? What causes the problem? And what can you do about it? One potential cause of a slow turn-on time is that the TV’s power supply or power circuit (see diagram below) may not be working properly. That means the TV won’t be able to get enough current to turn on, and everything else in the TV will have to try harder to make up for it.
If that’s the problem, repair instructions are available in the TV’s owner’s manual. (A printed copy is included with the TV.) But if you don’t have the manual, it’s easy to find all of this information on the Internet. Here are a couple of websites to get you started:
Note: Some problems that could cause a slow turn-on time may be caused by something other than a power supply or power circuit problem. For example, a too-sensitive picture tube might cause a slow turn-on time. In that case, the problem may be easy to fix: just replace or repair the TV’s picture tube (also called a CRT). Stay tuned for an upcoming story on this topic.
Now that you know what could cause the problem, let’s look at some of the options you have to try to fix it.
Option 1: Check your TV’s power circuit for problems and try to repair them.
Many different things could be wrong with the power circuit in your TV. Here are some of the most common problems you may run into, and what you can do about them:
Conclusion
Most of the problems that causes TV’s to take a long turn-on time are simple things that can be fixed. But if you’re having trouble, first check this checklist and then try these solutions. If your TV is still not turning on, you can go to this page for help with your TV.
TV turns on and off when turned on and then the screen goes black.
This is one of the most common problems with LCD TVs. It’s caused by dirt and dust building up on the screen. In order to get rid of this problem, start your TV for about 15-20 seconds with no picture at all. Turn it back off, wait about a minute, then turn it back on again. If this does not work, the problem could be that your TV is overheating. So, wait a few minutes and turn it back on. If that does not work, you may need to take your TV to a repair shop.
TV displays a black screen with no sound but has power
