LaCie electron22blue monitor. Power supply board module fuse blows when power button is pressed. Replacement fuse also blew out. No visible damage to power supply components, such as scorch marks or exploded components.
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Re: monitor fuse keeps blowing
There is definately a shorted component that causes the fuse to blow.
Nomaly the ceremic capacitors are the cause of the problem. Check to
see if there is visiual dark or burnt ceremic caps with label sameting
like this "SCK 083" near the fuse area and change it. Hope it
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Power supply board is not working. There is usually a fuse on the board that you can change, but you need to know what caused the fuse to blow in the first place. There are many places online that sell replacement boards. It's not difficult to open the back of the TV to get at the boards.
you have a short most likely on the power supply but could be on the mainboard, inverter board, av/input board. The T-con board is fused and should blow its fuse before blowing the fuse on the power supply. I'm going with a faulty power supply, most likely a shorted Mosfet.
The tv have a short in many parts internally in tv power supply board itself could be anythings on the tv power supply board to causes the fuse to blow over and over again.U will never solved it if u don't have all the measuring elecronics equipments and skills and know how to find out.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
hi, i don't know the exact power board you speak of, most fuses for power supply protect ac inboard power, and backlights. if backlight inverters touch ground or ground out, this will blow fuse. otherwise, the fused circuit is used for main inboard power going to primary capacitor. take an automotive fuse holder and solder test leads long enough to work with, install 4 amp blade fuse and jumper/solder the circuit to the fuse on the board and power on the monitor. if all goes well, probably just power surge or outlet grounded. if blows fuse, check to board for obvious burns or blown capacitors. if not there, unplug backlights and power on, if still blows, check to make sure no direct conact with board and back of screen. just be thorough about looking carefully for shorts if there is one. and don't forget to replace the factory fuse on the board with the correct one after you finish repairing, don't leave that automotive fuse in. good luck.
in the printer there is a power supply board.there is a same type of 3amp fuse on the power supply board.if there is any kind of overheating in the power then the fuse in the plug and fuse on the power supply board blows out.in some cases only fuse on power supply board blows out.this fuse is placed on the board for safety reasons.because in the older model printers when this short circuit problem was happening at that time whole board used to blow out.so in the new model of printer a fuse is placed on the board ,so if any overheating or any power outage or any short circuit occurs.the fuse blows out instead of whole power supply board.
You just need to replace the fuse on the power supply board by disassembling the printer.the power supply board is the green color square shaped board.its the board to which your power wire of printer is connected.
the fuse is available at any local electric hardware shop.its not any special kind of fuse.
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This is an indication that the convergence amps are drawing too much current which has an effect on the power supply and thus killing your sound by removing or lowering the voltage supplied to that stage, finally this results in the blowing of the fuse. I would suggest that you change the convergence amplifiers and the biasing resistors (All of them) and then see if this corrects your problem (I believe it will). Also get a schematic of the TV and try to find out how the power supply relates the sound module and the convergence module, they might share a common power bus, or the voltage regulator for the sound also feeds the convergence board.