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TV won't turn on but standby light is on

  • 02-07-2018 6:29pm
    #1
    Pussyhands
    Registered Users, Registered Users 2 Posts: 8,239 ✭✭✭


    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?


Comments

  • #2
    New Home
    Moderators, Arts Moderators, Recreation & Hobbies Moderators, Social & Fun Moderators Posts: 77,361 Mod ✭✭✭✭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?


  • #3
    [Deleted User]
    Posts: 31,118 ✭✭✭✭ [Deleted User]


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


  • #4
    New Home
    Moderators, Arts Moderators, Recreation & Hobbies Moderators, Social & Fun Moderators Posts: 77,361 Mod ✭✭✭✭New Home


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


  • #5
    byte
    Moderators, Regional North West Moderators Posts: 19,159 Mod ✭✭✭✭byte
    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.


  • #6
    alta stare
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭alta stare


    May be a capacitor or the likes.


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  • #7
    New Home
    Moderators, Arts Moderators, Recreation & Hobbies Moderators, Social & Fun Moderators Posts: 77,361 Mod ✭✭✭✭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. :)


  • #8
    New Home
    Moderators, Arts Moderators, Recreation & Hobbies Moderators, Social & Fun Moderators Posts: 77,361 Mod ✭✭✭✭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. :o


    Thanks.


  • #9
    alta stare
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭alta stare


    New Home wrote: »
    Like the thing out of Back to the Future? I didn't know they were an actual thing. :o


    Thanks.

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


  • #10
    NewClareman
    Registered Users, Registered Users 2 Posts: 1,498 ✭✭✭NewClareman


    alta stare wrote: »
    Yep they are alright just not flux capacitors. :D 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.


  • #11
    [Deleted User]
    Posts: 31,118 ✭✭✭✭ [Deleted User]


    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.


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  • #12
    New Home
    Moderators, Arts Moderators, Recreation & Hobbies Moderators, Social & Fun Moderators Posts: 77,361 Mod ✭✭✭✭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 :p), 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. :)


  • #13
    alta stare
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭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.


  • #14
    Pussyhands
    Registered Users, Registered Users 2 Posts: 8,239 ✭✭✭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..


  • #15
    heffo500
    Registered Users, Registered Users 2 Posts: 966 ✭✭✭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?


  • #16
    alta stare
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭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.


  • #17
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,596 Mod ✭✭✭✭Capt'n Midnight


    alta stare wrote: »
    Yep they are alright just not flux capacitors. :D 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.


  • #18
    alta stare
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭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.


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