Tv comes on then turns off

My baird JO47 tv is stuck on standby - Digital TV - Streaming ...

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Dec 17, 2012 - 4 posts - ‎2 authors
My Baird JO47 tv is stuck on standby and won't come off. ... I have a panasonic 50" TV it will not turn on no green light or standby red light ... Forum; my tv standby light keeps flashing blue on and off and won't switch on Forum ...

Baird JO47 Stuck on Standby ' Electronics Forum (Circuits ...

power supply board has defective components,check for swollen capacitors and replace them,if problems still not solve email me at [email protected] .for further instructions

Probably you should just disable the Standby feature, though it also depends on why it's in Standby. On some TVs, it's when it's been left on and idle for a certain period of time- basically the TV will turn itself off, or go into a lower powered state. It's possible it will not come out of it because the TV could be overheated, and needs time to go back to normal. Without know the specifics as to why the Standby happens I couldn't say, and it's also hard to say what the issue is with it coming out of it.

Go into the TV Menu and find Power Options. Set Power to Normal, or Quick Start (or whatever Hitachi calls it). If this is separate from the Standby Options, then disable the Standby option on its own.

most LG have a "vacation switch" on the bottom right hand side of the set very near that standby light.

it is placed poorly, where you can accidently click when grabbing the TV to move it or swivel it.

it is a toggle switch, a "master power" switch.

you may have bumped it to the off position. flip the switch, your standby light will come back on.

the standby power supply is probably faulty . there is a service kit available but needs to be fitted by a tv engineer and is available from www.tvs-services.com or call 01245382539

put tv into standby and press INFO / MENU / MUTE / STANDBY on remote you have to be quick
the tv will come on with factory settings on screen
ONLY USE DOWN NAVIGATION KEY move to reset and press RIGHT NAVIGATION KEY press standby to exit
tv will come on and will need retune
if this not help then will be capactors on mains power board failing look at them and if any have raised tops replace then

When you turn that TV "off" with the remote it go's into standby mode, that is the way they made it unfortunatly
To actualy make it not have any power going to it you will have to unplug it or plug it into a power strip and use the switch on the power strip.
They use the standby mode to allow the TV to turn on quickly without making you wait.

un-plug the TV, wait at least 30 seconds, now turn it on again and close your ear to the back of the TV while turning it on, pay attention on hearing a hogh pitching sound coming from the back of the TV, the sound may be quick and go from a lower frequency to a higher frequency really quick if this sound is present then it means the switching power supply. if you don't hear any noises then the power supply is bad. It could also be a bad horizontal driver transistor, it depends on the model TV you got.

your tv switch might not be contacting the switch on the actual tv itself

Is this a recognised symptom? yes the problem in power supply. it is due to switching oscillator& switcing output circuit probabaly capacitor & transistor. as set is very old so after power supply is ok check for horizontal output also. can it be fixed? yes it is common & not major problem