Hello Everyone, New guy here, have a fairly simple wiring problem.
I have been in the process of repairing a 25' I-INC HSG1064 monitor that had blown CCFL bulbs and I replaced them with an LED strip kit that was available on eBay, the only problem I have had is finding a good power source.
The DC-DC converter for the LED's takes 10-30VDC, and my SMPS board has a 5.3V and a 12V output, but when I try to use the 12V output to power my DC-DC converter and my lights, it draws too much current from the SMPS and throws the monitor into a boot loop, if I am lucky it will finally turn on after a few moments. The power supply silkscreen claims it is rated at 12V 700 ma and 5.3V at 3.3 Amps.
I have tried running the lights with an external power supply, an old laptop charger with an output of 19V, and the lights run fine, which led me to my conclusion of over-current creating my problems, as this was done with the rest of the signal lines connected (DIM, ON/OFF).
I have also tried removing the unneeded high-voltage components that drove the CCFL circuits hoping to cut down on current draw, such as the CCFL transformers, I would also like to remove the High-Voltage circuits transistors, but I do not know how to differentiate between the High-Voltage transistors and the transistors for the 12V/5.3V SMPS as I have no schematic or a service manual to help me, if anybody can help me find a service manual, it would be very appreciated.
I have been in the process of repairing a 25' I-INC HSG1064 monitor that had blown CCFL bulbs and I replaced them with an LED strip kit that was available on eBay, the only problem I have had is finding a good power source.
The DC-DC converter for the LED's takes 10-30VDC, and my SMPS board has a 5.3V and a 12V output, but when I try to use the 12V output to power my DC-DC converter and my lights, it draws too much current from the SMPS and throws the monitor into a boot loop, if I am lucky it will finally turn on after a few moments. The power supply silkscreen claims it is rated at 12V 700 ma and 5.3V at 3.3 Amps.
I have tried running the lights with an external power supply, an old laptop charger with an output of 19V, and the lights run fine, which led me to my conclusion of over-current creating my problems, as this was done with the rest of the signal lines connected (DIM, ON/OFF).
I have also tried removing the unneeded high-voltage components that drove the CCFL circuits hoping to cut down on current draw, such as the CCFL transformers, I would also like to remove the High-Voltage circuits transistors, but I do not know how to differentiate between the High-Voltage transistors and the transistors for the 12V/5.3V SMPS as I have no schematic or a service manual to help me, if anybody can help me find a service manual, it would be very appreciated.
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