I had the same problem and i replaced the capacitors also, when i turned it on the capacitors started smoking. lol i had the polarity wrong. tried again and it worked. my t.v. has been up and working for the last six months. but the t.v. is giving the same symptoms as last time like the caps might be going bad again.this might be constant maintenance.
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The white smoke - usually with a nasty smell will be a capacitor in (most likely) the power supply section. You will probably find one of the capacitor cans has a bowed and punctuered top. It's designed to fail that way with excess pressure. (If the top hadn't punctured, then the pressure would probably have blown the entire can off of its legs and made a mess on the PCB.)
Assuming it is a failed capacitor, it's probably a one-off (you'll find out!), so replace it like-for-like. Pay attention not only to the polarity and voltage rating, but make sure it is high-temperature rated (ususally 105C) and a low ESR type. Fittting a standard (non-lowESR) capacitor in a switch-mode power supply will lead to early overheating and failure.
(Obviously, if there's any detritus from the old capacitor, clean it off of the PCB first!!!) Good luck with that.
If this is an lcd tv check for capacitors on the power board that have domed tops. Replace these capacitors with the same value. microfarad mf and voltage v. make sure to notice the polarity and no not us non polarized capacitor. only use electrolytic capacitor .
Replacing a 220Mfd capacitor with 440Mfd wond poise this problem. Just check, whether the the polarity of the repalced capacitor have been reversed. Electrolytic capacitors have both +Ve and -Ve terminals. It reversed, the capacitor will insert a short circuit, when you switch ON the set. On some occations, it will heat up and will burst out. Check this first. The polarity of electrolytic capacitors will be marked on the printed circuit board too. Check whether the markings at the printed circuit board matches with the polarity of electrolytic capacitor you have recently replaced.
Usually the capacitors are 1500uF/25V and 470uF/25V, but I suggest to use 35V capacitors. This will make your power supply to last forever. Also, you better open the monitor and see by yourself what kind are the capacitors. Mind the polarity or the capacitors will blow out with lot of smoke. You can buy them from local parts store like Conrad.com or online.
Sir before replacing the board try to check first the power supply, this fault is commonly cause by bulging capacitor or leaky capacitor, this bad capacitor is producing a low and unfiltered dc output that causes your unit to malfunction.
This is the bulging capacitor if you see this replace with the same type and observe polarity, capacitor is much cheaper than the whole power supply board replace this and it will fix the problem hope this help good day and best regards.
Look inside the voyager and make sure that everything is turned OFF... Since the battery was completely dead there could be something that was left on and this is creating a big load when you try to connect the jumper cables.
Double check your polarity on the jumper cables and try again.. If you have the same problem, I would suggest disconnecting the voyager battery and trying to charge it with the van disconnected. Batteries can do some strange things.. Best of Luck to you..
This trouble is very common for lcd if you remove the back cover of your tv try to look for bulge up in the top of the capacitor or not perfectly flat like the others or if you see something with a wet mark at the bottom of the capacitor try to replace them but be sure to remember the proper position of the capacitor because it has a polarity, When this capacitor has a bulge up or leaky it will not properly filter the dc voltage and it cannot transfer properly the dc voltage to other parts. Note be sure to unplug your unit first before removing the back cover, good day and best regards. Feel free to send feed back.
The passive components are smoking because there is a short in the drive. Hence you will need to do a voltage check to see the point of power drain and change the transistor or IC which had failed in this wrong switch over. You dont have to panic as you can do it with a little bit of patience and logic. trace the low continutiy of the voltage in this section and isolate. Please see that the polarity of the capacitors replaced is correct. Try to trace the cirrcuit near to the smoking and disconnect the stages close to it to confirm and identify the fault. Hope my advice helps. Good day