ONN TV stuck on stand by mode?

Shite tv's do not last long

Chez
August 2017

Hi
I have a Onn 20 inch TV with similar a problem. The standby light flashing, a ticking noise coming from the set, but it will not come on. I have had a look at the capacitors on the power board, but none show any signs of "Bulging". Is there any way of testing them?

Jeff
December 2013

my samsung 20 inch tv got stuck in standby mode. since yesterday. please help me.
my tv is around 7 years old.

kulajeet
May 2013

my baird cn55bair keeps going on standy and when i turn it off at wall its still got 2 reds lights for about 20 seconds and so i turn it back on and goes on standy again

kayleigh
September 2012

On any TV , check the capacitors , look for raised surfaces , replace those capacitiors , generally it is better to increase the voltage rating of them , as that is generally the issue , under rated components , keep the farads the same up the voltage : eg 10v blown change to 16v etc etc...

Paul
June 2012

i have the same problem re tv stuck on stand by. Its a baird 52inch, no idea which model. Theres only 1 electritians company in my town an they are wanting 45quid just to 'look at it.' no chance am payin that, how much would the want to fit it? 10grand! Jokes aside. I need held and any would be much appreciated. Thanks.

barry
January 2012

Just fixed a 32" ONN TV that wouldn't come on.

It was a 10uF 50V capacitor under the top heatsink. Better to replace on the back of the board as its cooler.

The 68uF caps are for the 5V (always on) standby supply. It would prob work with just the one.

The power unit is actually quite good but would be more reliable if mounted sideways as it would run cooler and these caps would not be so much in the line of fire.

Jim
December 2011

Hi Kevin, still around? I have a 20" Asda set with this problem. There are only 2 boards tho'. The one at the bottom seems to do power, tuning, video and audio. The other has a bunch of wirewound things on it - inductors ? Are you familiar with this set up? If so can you give and advice? ( Thers are about 70 electrolytics scattered around this board, none gold coloured.)

George H
November 2011

two chris w . top man glade its working now now u can help any one else you have the tools and the talent

kevin
October 2011

hi ive got an onn tv that is stuck on standby ive got the caps to fix it but there is a metal cover over them how do i remove the cover to get to them or how can i remove them without taking the cover off please help me ive been trying for ages

rachel
August 2011

We had same problem as thread starter. Eventually I found the manual and read it! Apparently they are on standby unless they are unplugged. We now unplug the tv overnight etc and it no longer sticks in standby.

chris w
August 2011

To kevin if your still here i would like to thank you as you just help save my onn lcd after replacing those two capacitors alls good for now :).For those who need theses capasitors heres a link http://www.ebay.co.uk/itm/16V-680uF-105-C-electrolytic-radial-Capacitor-X-2pcs-/120530568418?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item1c102e84e2 . Also so easy a soldergun a good screwdriver and 20 mins is all it takes and i was a bit put off by taking it apart due to electric shock when i was younger so with a bit of research before i started opening it up i found out this just to make sure to be carefull as there high voltage even when unpluged would advise to wear rubber sole ie trainers take care taking out the psu not to touch any main big parts then once out decharge the big main 450v capacitor depending on the unit this may differ you can decharge this using the old 100w light bulb trick youtube should shed some light on this method

karl
July 2011

hi there dave m ? yes there is away they go there is a neg and a poss u can tell from looking on the pc board so u need two take care which way u put them or they will pop ... there will be a round circle with a squiggle going through it i think that shows u ur negg side so mach it uo with ur cap

kevin
July 2011

Kevin, don't know if you are still around on here, but I've just got the caps and am going to attemt to solder them in. Does it matter which way round they go?

Dave M
May 2011

I got the caps, replaced the ones you described to replace. Just tried turning on the TV and it is doing exactly the same as it was before. Why does my TV still not work?

bobaloid
March 2011

The towel trick worked. But don't know how long will it last!

Ravi
January 2011

i to have a 40"onn tv stuck on afraid to turn off coz i know it will never turn on doesany one know what the law says coz there is a major design fault

gaz1
January 2011

hi there glad u got the parts. when u take the back of the tv u will see 3 boards the board u need two look at is the the main powere bord it sits at the bottom of the tv. u will see the wire from the plug its black then u will no which the board is held down by 4 screws u can unscrew them. then u can remove the wires from there home. they are all white. then u can remove the power pack ps make sure ur tv is not pluged in two the wall u dont want a shock ?? when u have removed it lay it flat u will see 4 bundels of wire on ur right side which u disconected that part of the borde is fine. there would have been one more wire which u would have also disconected and were that wire sat is were the two capasitors sitt u can see them they are gold black and have samxon uf 16v105c8 v7a it is writen in gold writting on the capasitor. there is two of them right next two each over. remove them. hope this helps

kevin
December 2010

Hi Kevin, really helpful-thank you... I now have the parts, ive looked all over the boards and have no idea which ones need removing and replacing... i have taken some photos, is there any way i can get them to you - or can you explain simply which ones need to come out? - Many, Many thanks

Cameron
December 2010

cameron when u are on e bay just type this in 16v 608uf 105 electrolytic radial capacitor. then it will give u a the range of capacitors u will see a company called h.m.comp click on it and thats were i got mine from hope this helps mate

kevin
December 2010

hi there they are 16v 680uf 105co electrolytic radial capacitor if u type in h.m.comp when ur on ebay that is who suplied me hope this helps

kevin
December 2010

Kevin, I tried to find the 608 uf 16v 105c0 as you suggested.... Cant find one anywhere. You said that Panasonic ones will do. What do I type in to ebay? It comes up blank everytime i type that serial.... will any old 16v ones do? whats the specific number for the Panasonic ones?

Cheers

Cameron
December 2010

the caps cost me 2 ponds of ebay so it wont cost u a lot two fix it cheaper then bying a new one or getting it fixed they will take the pisssss so it will only cost u this much and p a p and ur tv will work again

kevin
November 2010

carren the prob u have is the powere pack unit inside the tv there is a grey wire which comes from were u see the green light to say ur tv is on and the red light says its on stand by trace the grey wire back to the power pack board u can diconect the wire from the board. and there is for screws holding the power pack unit in. then u will need two by two capasetors there called caps which need soldring in u will need a soldring gun and soldring wire i got the caps of ebay. here is the part numbers u will nedd they are 608 uf 16v 105c0 u will need 2 of them. the ones in the tv are called samonx they are gold and black . but u can get pansonic ones that are the same parts .

kevin
November 2010

we bought two of these 32 inch ONN at asda. One lasted 12 months to the warranty date the other lasted 24 months they are both stuck on standby mode light goes green for 2 secs then stays red ...... kevin how did you fix your tv?

carren
November 2010

two all u guys with asda on tv i have just fixed mine very easy took me 20 mins

kevin
November 2010

got the same problem with mine found that if you leave it on standby for a while then switch it on and off from the wall socket it will eventually come on

davidh
October 2010

it is the same with the xbox 360 ring of death put a towel over it for an hour or so then it will work

brendan
August 2010

my 32 inch onn lcd is around 2 and a half years old and is now stuck in standby mode, as it was out of warranty i took a look inside and foud there was a surface mount resistor missing (r230 incidentally) and scorch marks on the power supply board, the quality of the surface mount solder is awful and would explain why this happened , whoever done the touch up on the soldering obviously had other things on there mind like the labrador they were having for dinner that night.

scotty p
June 2010

mine will go green for a few seconds then turn off again was working a few days ago

kaitomagic
May 2010

Our 32 Inch ONN TV is 2 years old and wont turn on and stays on Standby.

Seems like they all last about 2 years!

Michael.
May 2010

same probleem here man an asda are having non of it mine was roughly about two years does anyone know how much asda will fix it for

i hate asda
April 2010

our QNN TV Lasted just over 2 years ...out of warranty ofcourse..exact same problem as you guys..isnt there something we could do about this issue legally ??

harpol
March 2010

what to dopam

pam
March 2010

Im having the exact same issue! only had the thing for 24 months also, did the hair dryer work? have you managed to fix the problem?

Danielw
March 2010

I could have written the exact same thing. Ours is 32inch ONN LCD TV that wont turn on. Just the red light at the front that wont go green. Rang Asda techinal phone number who basically didnt want to know. Only had it 24 months. Might go Trading Standards. also tried turning off at mains etc but no joy.

another annoyed Mum
February 2010

Try warming the back of the set up for 5 mins with a hair dryer, if this works you have a heat damage fault, dry solder joint, or a failing component and it needs to be taken in for repair

Timmy
February 2010