TV won't turn on but standby light is on

Pussyhands

Technika TV.

4 years old.

Red light is on. Won't switch on with the remote or by the button on the TV itself.

I was getting some joy by unplugging and button mashing the tv buttons and then plugging back in.

Any ideas?

New Home

I'm having the same problem with a Panasonic I bought in January, I don't need to press any buttons when it's unplugged, I just wait until the led is off, then I reconnect it to the mains. It's a total PITA, though, I have to do it every time I leave it on standby for more than 2 minutes.

If anyone has any suggestions as to what may be causing it and how it can be fixed, please let me know.

Also - should I post this in the Electrical forum, perhaps?

I can forward your post to the terrestrial TV forum if you like.

New Home

Thanks, that would be great - I wasn't sure where was the best place to post this.

byte

New Home wrote: »

I'm having the same problem with a Panasonic I bought in January, I don't need to press any buttons when it's unplugged, I just wait until the led is off, then I reconnect it to the mains. It's a total PITA, though, I have to do it every time I leave it on standby for more than 2 minutes.

If anyone has any suggestions as to what may be causing it and how it can be fixed, please let me know.

Also - should I post this in the Electrical forum, perhaps?

If it was bought new in January, just take it back to retailer to have it repaired/replaced as it's still under warranty.

alta stare

May be a capacitor or the likes.

New Home

byte wrote: »

If it was bought new in January, just take it back to retailer to have it repaired/replaced as it's still under warranty.

That was my Plan B, I just wanted to try anything I could here before bringing it in: if there was a sequence of buttons to press or something (first thing that sprung to mind, I don't know if that would work at all), or something to select/deselect from one of the menus, I'd like to try that before finding myself with no telly for who knows how long.

New Home

alta stare wrote: »

May be a capacitor or the likes.

Like the thing out of Back to the Future? I didn't know they were an actual thing.


Thanks.

alta stare

New Home wrote: »

Like the thing out of Back to the Future? I didn't know they were an actual thing.


Thanks.

Yep they are alright just not flux capacitors. alot of issues in tvs can be narrowed down to a bad capacitor.

NewClareman

alta stare wrote: »

Yep they are alright just not flux capacitors. alot of issues in tvs can be narrowed down to a bad capacitor.

Yep, a very likely cause. However, unless you’re a trained technician I wouldn’t recommend trying to repair it. Even if you have the equipment (soldering iron + desoldering braid) there is a level of skill involved.

NewClareman

NewClareman wrote: »

Yep, a very likely cause. However, unless you’re a trained technician I wouldn’t recommend trying to repair it. Even if you have the equipment (soldering iron + desoldering braid) there is a level of skill involved.

Like choosing the correct one to replace for starters.
Probably one in the switched mode power supply.

New Home

Oh lord, no, I wouldn't attempt to go near anything like that myself - I mean, I can change a bulb and replace a thermostat (once I see where the wires in the old one went ), but anything else would be asking for trouble!

So, it sounds like there's nothing I could click on and no procedure I could follow to fix the software, 'cause it's likely to be a hardware problem. Thanks a mill, folks, I'll bring it back to the shops, so.

alta stare

NewClareman wrote: »

Yep, a very likely cause. However, unless you’re a trained technician I wouldn’t recommend trying to repair it. Even if you have the equipment (soldering iron + desoldering braid) there is a level of skill involved.

To be fair if you were handy with a soldering iron they can be changed easily enough.

Pussyhands

alta stare wrote: »

To be fair if you were handy with a soldering iron they can be changed easily enough.

Do you think that's the same problem I have?

I actually left the TV up for a few weeks and then used it again and worked fine for a week or two...now it's back to not turning on. Doesn't turn on with the side buttons on the tv itself either. Standby light just stays on..

heffo500

I had similar issue with a TV and I removed the back, vacuumed all the dust out and it has worked perfectly ever since. maybe worth a try?

alta stare

Pussyhands wrote: »

Do you think that's the same problem I have?

I actually left the TV up for a few weeks and then used it again and worked fine for a week or two...now it's back to not turning on. Doesn't turn on with the side buttons on the tv itself either. Standby light just stays on..

Possibly.

Capt'n Midnight

alta stare wrote: »

Yep they are alright just not flux capacitors. alot of issues in tvs can be narrowed down to a bad capacitor.

https://www.badcaps.net/index.php


Capacitors in the power supply are lethal , if there is a problem with the discharge resistor, they can potentially store enough energy to kill you hours after the TV is removed from the mains.

heffo500 wrote: »

I had similar issue with a TV and I removed the back, vacuumed all the dust out and it has worked perfectly ever since. maybe worth a try?

As above wait a to let the power dissipate before going near it.
Do not touch the insides with the vacuum as it generates static which electronics don't like.

Many years ago I heard of someone doing this to an old CRT tube. They cleaned ALL the carbon off it.

alta stare

Capt'n Midnight wrote: »

https://www.badcaps.net/index.php


Capacitors in the power supply are lethal , if there is a problem with the discharge resistor, they can potentially store enough energy to kill you hours after the TV is removed from the mains.


As above wait a to let the power dissipate before going near it.
Do not touch the insides with the vacuum as it generates static which electronics don't like.

Many years ago I heard of someone doing this to an old CRT tube. They cleaned ALL the carbon off it.

I know, i studied electronics and work in the security industry.