Entertainment Center: TVs, Stereos, VCRs and DVDs - TV will not stay on
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06-09-01, 06:44 PM
I have a 1990 Magnavox TV that will not stay on. When I turn it on the volume is really low, then it gets louder and louder and then the TV completely turns off. What is wrong?
Karyn
Karyn
Smokey
06-10-01, 11:54 AM
Good Afternoon, Karyn:
When I hear these type of problems, my first thought is a remote control problem. Usually what occurs is that you nice folks go out and buy a new light source for the living room (such as lava lamp, fish tank, etc).
Since your remote control is coded light pulses, a new source of light in the room may trigger the set into doing some strange things.
First check to make is put a piece of masking tape or black electricians tape over the remote control receiver port on the front of the set. Then, activate the set manually. If it responds normally, start looking for light sources.
It could be the remote control, itself. One that has been dropped once too many times can give strange results.
Anyway, eliminate the remote control and if the problem persists, come back. Then, we can discuss things a little more in depth.
Smokey ;)
When I hear these type of problems, my first thought is a remote control problem. Usually what occurs is that you nice folks go out and buy a new light source for the living room (such as lava lamp, fish tank, etc).
Since your remote control is coded light pulses, a new source of light in the room may trigger the set into doing some strange things.
First check to make is put a piece of masking tape or black electricians tape over the remote control receiver port on the front of the set. Then, activate the set manually. If it responds normally, start looking for light sources.
It could be the remote control, itself. One that has been dropped once too many times can give strange results.
Anyway, eliminate the remote control and if the problem persists, come back. Then, we can discuss things a little more in depth.
Smokey ;)
06-10-01, 05:35 PM
I don't think it's the remote because I did not have batteries in it yet. I have been turning it on manually. I think it might be a bad fuse internally. What do you think?
Thank you,
Karyn
Thank you,
Karyn
Smokey
06-11-01, 09:18 AM
Good Morning, Karyn:
So much for the normal things. So, let's discuss the on/off function of the television set.
Sets these days are not like the units that Mom and Dad used in yesteryear. The simple act of turning a set on and off requires a sophisticated logic circuit within the set
that enters the parameters for the sequence of events. And, this is all tied to the remote control circuit. While you are not using the hand held remote control circuit, you are using the internal system none-the-less.
It would appear logical to assume that something (perhaps a small signal diode) has shorted in the remote control and is now staging a sequence of events other than normal operation. I do not suspect a fuse in this instance but old Smokey has been wrong before.
Either way, it is time for the back to come off the set and a little troubleshooting has to occur. As I said, I would start with the remote receiver and work outward. This is not something that will cure itself unfortuneately.
Smokey ;)
So much for the normal things. So, let's discuss the on/off function of the television set.
Sets these days are not like the units that Mom and Dad used in yesteryear. The simple act of turning a set on and off requires a sophisticated logic circuit within the set
that enters the parameters for the sequence of events. And, this is all tied to the remote control circuit. While you are not using the hand held remote control circuit, you are using the internal system none-the-less.
It would appear logical to assume that something (perhaps a small signal diode) has shorted in the remote control and is now staging a sequence of events other than normal operation. I do not suspect a fuse in this instance but old Smokey has been wrong before.
Either way, it is time for the back to come off the set and a little troubleshooting has to occur. As I said, I would start with the remote receiver and work outward. This is not something that will cure itself unfortuneately.
Smokey ;)