Question about Philips Magnavox 50ML8105D 50" HDTV DLP TV
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Posted on Jan 02, 2017
The popping sound may have been a capacitor. The chance are the capacitor is in the HV section of the TV set and is part of the supply to the Horizontal section of the TV. First if you do not have electronics experience I would suggest you take the TV to a qualified TV repair shop. OK now if you have electronics experience I would say to unplug the TV, open the set up and do a physical inspection of the TV you will be looking for a capacitor that has exploded; if you find one look at the schematic for the TV and find its value. Then do so checks to find out why did the capacitor explode. Most likely the capacitor exploded because of wear and tear, but it always pays to check. Replace the capacitor with one of the same value and then turn the TV on, use your voltmeter to measure the voltage across the capacitor to make sure its the same or close to the value on the schematic.
These are the basics of what to do
I hope this helps
Posted on Sep 21, 2008
The clicking you hear is a relay that repeatedly connects,
then disconnects the AC to prevent fire or further damage.
If it just fails to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.
Posted on Oct 31, 2008
Sounds like your Convergence chips failed, were your red/blue/green colors slowly seperating or was the picture starting to curve on the top or bottom or both? if so see below general post.
Also what model # is your TV and what size?
Actually I have this TV and you need 2 Convergence IC's STK392-120's (120's and 150's will work) of course order 2 of the same type I'm using replacement 150's they allow for a little higher heat and were cheaper ALSO you need to replace the 12 resistors with 6.8 ohm metal film resistors, make sure they are metal film! don’t skimp out here I did and then they blew and fried my IC's and I had to replace everything again!
Great reference link that I posted pictures on, check out page 3
Where I got all my parts that worked:
Suburban Electronics http://www.suburban-elect.com/
Manual Library you should find all you need here:
What you need:
(2) STK392-120 OR STK392-150 IC chips
(12) 6.8 Ohm Metal Film resistors
set of star screw drivers
15 watt pencil solder pencil, DO NOT use a high watt iron you will fry the surface mounted item.
good leaded solder, and flux
BTW if you don’t plan on trying this and are going to throw out the TV, I still need a IC convergence board for a 51MP392H/17 TV I'm fixing, I'm willing to pay S/H and buy your IC board that’s not been tampered with. Edwinkraus@hotmail.com
Posted on Nov 20, 2008
If you hear a clicking noise that sounds like the ballast trying to power on the lamp, but nothing happens, the lamp may be faulty.
Here you can get your lamp that most likely needs replacing.
Posted on Mar 27, 2010
Testimonial: "thank i'll try it"
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