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On switching shows stdby indicator. horizontal trasistor getting 80v. hav changed capacitor 250v 47uf and 160v 47uf. no change. hav also changed power ic tea1507p plus tank cap 420v 220uf. still not coming on.
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Check to see if fan is hot. If it is check capacitor. The silver oval component attached to blower housing. If motor is not hot you have a bad fan board or fan switch, Check above burners and you will see a lower limit switch and above that a fan switch. If you do not see a fan switch. The problem is blower control on board. You will have to replace board. Rus
your irf 630 is not original purchase it from proper LG authorised service centre it is costly but never become faulty again duplicate mosfet overheats if your green led is on then measure voltage at E.H.T.connect meter at output transister if E.H.T. is producing then meter should show 1 digit if not then 50v will show take care that signal cable should be disconnected if E.H.T. is not producing then check +vcc at horizontal ic it should be 12v. if 12v is not present then check regulator ic 7812 insmps
Changing the capacitance value (33uF) is generally not recommended. As for the voltage, you can always replace a lower voltage cap with a higher voltage as long as it will physically fit.
Hello to all, I have a tv zenith model C27V36, and it has a problem I connect it in the series and it does not turn on and I connect it to the network(net) and immediately burns (damages) the horizontal exit that is a trasistor C5905 and it burns (damages) both resistances of the protection,I changed the trasistor C5905 for a trasistor C3997 that is 20 amps and nonetheless it burns it,there are no signs of short circuits. Could the problem be the high horizontal ocsilacion?? But since turning it on it burns(damages) the horizontal exit I do not have way of checking it, because it is automatically damaged . can someone please tell me what to do in this case??? Or where I can find an electronic diagram or a sketch??? Or can someone who has worked on this TV before h help me out?? It is a zenith model C27V36 of 27 ".. thank you for you help.
Yes . Some of these caps are in the secondary of the power supply and some are on the signal board around 5v and 7v supply lines on the signal board . The 5 & 7 are mounted on heat sinks and the caps are right around there .Generally either 2.2uf or 4.7uf or the 47uf . Good luck
The pincushion is something that happens to this particular set. You may have the blue box type Capacitor in this set if not then a more brown or redish orange cap. I believe it is C4401. Most of the time its behind the Horizontal output. The cap gets leaky, most of the time it's a .47uf @250v. Try this, hope this helps
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