The TV turn off on stand by by itself often when it is cold, later the periodicity is getting longer. The colors little bit changed to worm color
During switch on your TV for the first time, when it is cold, you just listen for any 'ishhh' sound comes from the back side of your TV. You can check this by keep your ears close to the top back side of your TV. If it is there, there will be a fouling smell also. It will smell like Ozone, actually it is. If so, your TVs picture tube conecting socket, or EHT boot may be faulty.
Normally Sony TVs will not be to this fault, but a rare of them have. That is on cold climate,, especially when humidity in the atmosphere is high, this fault will be more. If you hear the above said sound, and feels the smell as I described above, you just open the TVs back cover. Keep the mains wire out of wall socket and do this. After opening the TV, just switch it on. Check out from where the sound comes from, whether it is from the picture tube base board or from the EHT cap fitted on the top side of your TVs picture tube.
If the sound comes from the above said anode cap, there will occur an arcing too, which you can see it in dark. If so the anode cap must be replaced. It is an expert job to do. Because before removing the anode cap along with its clip, the electical charge accumulated there must be discharged to a stromg negative point on the chasis, otherwise you will get a high voltage shock from it. Even though the TV is switched off, and after removing the mains chord from wall socket, the charge said above will retain there for hours, and it is dangerous to touch. That is why I said that it is an expert job to do.
If the sound comes from the picture tube base card, it will be due to the fault of CRT base socket, which is diretly soldered on it. It can be desoldered out from it, and can be replaced with a similar one, and can be bought from electronic spare part shops.
98% of Sony TVs are equiped with special circuits inside it, which detect any fault, whether it is minor or major, and keep the TV shut down as a precauion against further damage to other components inside. In your case your TVs protection circuit, detects some short or some fault, and shuts your TV as soon as you switch it on, and allows only to work after the fault it detected has over.
If this is not the fault, your TVs front panel standby light will give you indications about the fault inside your TV through chims. You just count keenly and patiently for three or more times, that how many blinks you see before it shut down, and report it to me through Fixya. The count must be exact. it will help me to come over to which section in your TV the fault occurs. Ok
Oct 28, 2010 |
Sony KV-32XBR450 32" TV