One of the normal issues in Samsung 153v LCD Monitor was show faint. Assuming you draw nearer to the screen and start to notice the presentation under dull climate you really could see the showcase however it was exceptionally faint. Assuming you press the front board button, the on screen show (OSD) would showed up and this evidence that the fundamental board, driver board and LCD board is working and the issue is in the inverter board. The capacity of inverter board is to produce an air conditioner wave from dc voltage to control up the lights which was situated at the top and lower part of the LCD Monitor. In the event that the inverter board has issues it would not illuminate the lights and what you could see just a faint presentation.
I actually could review when I originally experienced such issues quite some time in the past and in view of absence of data, I was unable to tackle it. I called up my maintenance companions to got some information about the arrangement yet nobody ready to offer me a response. Regardless of whether you surf the web for “Samsung 153V LCD Monitor faint presentation fix”, you would not track down it. Because of this I need to do my own exploration to observe the response and I’ve won’t ever surrender. Winston Churchill once said “Never, never, never surrender”. I’m delivering the arrangement just to my unwavering individuals or endorsers just a debt of gratitude is in order for your help.
How about we start now! When the cover and the interior Display Reparatur aluminum packaging were opened I saw two lump channel capacitors at the auxiliary side of switch mode power supply. The worth was 470 and 1000 microfarad 25 volts. I saw four additional electrolytic capacitors situated at the inverter board have changed shading and the worth was 47 miniature farad 25 volts. Perusing the entire board with my ESR meter I found another capacitor flawed (220 uf 25 volts) which was close to the breaker (3amp). Since this capacitor was situated at a similar line with the breaker, I assumed that the circuit might give way also. Sufficiently genuine, checking the wire with an ohmmeter uncovered that it has open circuit.
Presently, the genuine issue looked by numerous electronic repairers who manages this model was, in the wake of supplanting each of the parts over the LCD Monitor actually would not work-it’s actually faint! First you need to wonder why the breaker blown? Would it be able to be brought about by the imperfect capacitors or something shorted past the breaker line? The closest circuit to the wire was the beginning circuit that comprised of a couple of NPN and PNP advanced semiconductor (4k7 +4k7 resistor incorporated into the semiconductor). Some other LCD screen planned involved the blend of C945 and A733 in start circuit. By the manner in which the part number for Samsung 153V beginning circuit semiconductors were the A6J (PNP advanced semiconductor) and the A8J (NPN computerized semiconductor) as displayed in the image.
Now and again just these semiconductors have issues (shorted) that made the breaker blow yet in the above case both computerized semiconductors are tried alright. Since the two semiconductors were working, presently the focus must be in the four ic’s that drive the high voltage transformers on the grounds that the 12 volts voltage was providing to every one of these ic’s. These 4 ic’s have many part numbers and the most well-known one that the maker utilized was 4532m. Some board utilized the AD4E10 and BBD3N13 part number. Right now it is very difficult to get the datasheet or specialized particular for this number even from the web search.
Do you have at least some idea what is inside these Ic’s? It is really a couple of P-channel and a N-channel mosfet incorporated into it. What’s more do you have any idea about that it tends to be test with a meter? Indeed, on the off chance that you utilize the Peak map book part analyzer, it would incite to you the outcome. From the outcome what you get are N channel FET situated at pin 1 (source), pin 2 (door), pin 7 and 8 (channel and the two pins joint together inside). Concerning P channel FET, pin 3 (source), pin 4 (door) and pin 5 and 6 (channel and the two pins joint inside). From the above test I observed two of these ic’s have shorted. Supplanting these two shorted IC with the capacitors and circuit put the LCD Monitor back to life!