2015.10.17 12:53
Wave Tube Display 10ft Vertical Curve
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One of the most popular problems in Samsung 153v LCD Monitor was display dense. Should you start to monitor the display under dark environment and get nearer to the screen the show could be really seen by you but it was quite faint. The function of inverter board will be to create a a-c wave to power up the lamps which was located at the very top and underside of the LCD Monitor. The inverter board would not light up what exactly you could see only a faint display and the lamps if it has issues.
I still could remember when I first ran into such difficulties long time past and due to lack of advice, I wasn't able to solve it. I did call-up my fix friends to asked concerning the solution but no one able to give an answer to me. Because of this I need to do my own research to find the answer and I've never quit. Winston Churchill once said "Never, never, never give up". I'm releasing the remedy just to subscribers or my devoted members only-thanks for your support.
Let us start now! Once the internal aluminum casing as well as the cover were opened I saw two bulged filter capacitors at the secondary side of switch mode power supply. The value was 1000 microfarad 25 volts and 470. 's saw colour has been changed by four more electrolytic capacitors found at the inverter board and also the value was 47 micro farad 25 volts. Browsing through the full board with my ESR meter I found another capacitor faulty (220 uf 25 volts) which was near the fuse (3amp). 's presumed the fuse may give way, since this capacitor was found in exactly the same line with the fuse. True enough, with an ohmmeter revealed that the fuse has open-circuit, checking it.
Could the defective capacitors or something cause it? The nearest circuit to the fuse was the beginning circuit that consisted of a set of NPN and PNP digital transistor (4k7 4k7 resistor built to the transistor). Another LCD monitor developed used the mixture of A733 and C945 in start circuit. From how the part quantity for Samsung 153V beginning circuit transistors were the A6J (PNP transistor that was digital) along with the A8J (NPN digital transistor) as shown in the picture.
Occasionally just these transistors have difficulties (shorted) that caused the fuse to blow out however in the above case both electronic transistors are examined fine. Since both transistors were operating, now the focus must be in the four ic because the 12 volts voltage was providing to each of the ic's 's that drive the high-voltage transformers. These 4 ic's have many part numbers as well as the most familiar one that the maker used was 4532m. Right now it is quite difficult to get the datasheet or technical specification with this number even in the web search.
Have you any idea what is inside these IC's? It is actually a set of P-station and an N-channel mosfet constructed into it. And can you realize that it can be evaluation using a meter? Yes, if you are using the atlas part analyzer that is Peak, it could prompt to you the effect. From the above evaluation I discovered 2 of these ic's have shorted. The LCD Monitor is set by replacing IC shorted with fuse and the capacitors again alive!
When you have virtually any inquiries concerning where and also how to work with wave tube display 10ft vertical curve [www.youtube.com], you'll be able to e mail us on our internet site.
One of the most popular problems in Samsung 153v LCD Monitor was display dense. Should you start to monitor the display under dark environment and get nearer to the screen the show could be really seen by you but it was quite faint. The function of inverter board will be to create a a-c wave to power up the lamps which was located at the very top and underside of the LCD Monitor. The inverter board would not light up what exactly you could see only a faint display and the lamps if it has issues.
I still could remember when I first ran into such difficulties long time past and due to lack of advice, I wasn't able to solve it. I did call-up my fix friends to asked concerning the solution but no one able to give an answer to me. Because of this I need to do my own research to find the answer and I've never quit. Winston Churchill once said "Never, never, never give up". I'm releasing the remedy just to subscribers or my devoted members only-thanks for your support.
Let us start now! Once the internal aluminum casing as well as the cover were opened I saw two bulged filter capacitors at the secondary side of switch mode power supply. The value was 1000 microfarad 25 volts and 470. 's saw colour has been changed by four more electrolytic capacitors found at the inverter board and also the value was 47 micro farad 25 volts. Browsing through the full board with my ESR meter I found another capacitor faulty (220 uf 25 volts) which was near the fuse (3amp). 's presumed the fuse may give way, since this capacitor was found in exactly the same line with the fuse. True enough, with an ohmmeter revealed that the fuse has open-circuit, checking it.
Could the defective capacitors or something cause it? The nearest circuit to the fuse was the beginning circuit that consisted of a set of NPN and PNP digital transistor (4k7 4k7 resistor built to the transistor). Another LCD monitor developed used the mixture of A733 and C945 in start circuit. From how the part quantity for Samsung 153V beginning circuit transistors were the A6J (PNP transistor that was digital) along with the A8J (NPN digital transistor) as shown in the picture.
Occasionally just these transistors have difficulties (shorted) that caused the fuse to blow out however in the above case both electronic transistors are examined fine. Since both transistors were operating, now the focus must be in the four ic because the 12 volts voltage was providing to each of the ic's 's that drive the high-voltage transformers. These 4 ic's have many part numbers as well as the most familiar one that the maker used was 4532m. Right now it is quite difficult to get the datasheet or technical specification with this number even in the web search.
Have you any idea what is inside these IC's? It is actually a set of P-station and an N-channel mosfet constructed into it. And can you realize that it can be evaluation using a meter? Yes, if you are using the atlas part analyzer that is Peak, it could prompt to you the effect. From the above evaluation I discovered 2 of these ic's have shorted. The LCD Monitor is set by replacing IC shorted with fuse and the capacitors again alive!
When you have virtually any inquiries concerning where and also how to work with wave tube display 10ft vertical curve [www.youtube.com], you'll be able to e mail us on our internet site.