I repaired my power board today. I replaced the same caps. There's two of them. Mine said Shin Shin P224K 400. Same thing. They are C523 and C524 located between the VS transformer and the two big power transistors. They are both inline before the VS transformer so being damaged, they have lowered the voltage to VS.
After replacing the caps, I got full power back to my PS. The only power that was affected was the VS which is suppose to be around 90v. It was only 68v. My black screen came back on. I think the value of the caps is either .022uf or .0022uf. I'm thinking more the .022uf. I don't think it is even .00022uf mentioned above.
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Nothing lights on the tv at all? Even the LED power indicator? Might have taken a power surge/hit. Chances are it popped a capacitor on the power supply or logic board. Nothing short of a actual electronics or tv repqair shop is going to help you unfortunateley. Unless you know how to look at circuit boards and are comfortable taking apart the tv while unplugged of course) but be careful becase the power supply can still carry a lethal charge on it if you are not careful. If you know somone who knows circuitboards and can solder and unsolder then you might get licky if it's a capacitor or a resistor. If it's a IC chip though you are going to have to buy a board or a powersupply. So again you really need to find a local tv repair shop.
Usually you cannot buy replacement powersupply boards for dvd players unless you buy a scrapper one off an auction site and use that , but before you go out spending any money, check the capacitors on the board which look like little blue cans, see if they have a buldge in the top and if they have then they will need changing. Check for any burnt components too.
The 0.1 microfarad can be safely replaced with a 275 VAC 0.1mF mains capacitor. You can remove the clip that held the old electrolytic capacitor by sliding the old capacitor out and squeeezing the metal clip so that it disengages with the plastic base. The load resistor is 450 Ohm 15W or 20W wirewound. There is a 56 ohm resistor in series with the capacitor which helps smooth the speed change and reduces wear on the contacts. A 2W wirewound resistor works best. (It is worth removing the contacts and removing any pitting or carbon build up with fime emery paper). I have repaired about 20 speed controls sucessfully with these components.
I have the same problem with a samsung power board in a hyaundai TV. PSU Model B4K-50.
I think my 2SK2372's shorted due to the faulty orange / red capacitors between the two FETs C523 and C524 which have the markings on them P0.22K400 which I assume are 220nF 400V. They had basically no storage capacity left in them.
I am about to order the new parts and see if this thing powers up! These capacitors are SHINSHIN capacitors
The Power Supply Board is listed below. Please note, there are 2 models with the same beginning number (PDP4294). Verify your model number before selecting the Power Supply Board as each board is different depending on the model number.
Here is my board that i ordered for replacement, as you can see, the top left second in --cap IS BLOWN. so i think i can either, use a cap from my other board into this and see if it works, or.....test out my current board, and use this board for parts. any suggestions, that be great. As far as,... which diode.. maybe this can help. cheers.-- Goat