Having problems with your Sony SDM-HS73P 17" LCD Monitor ?

Monitor won't turn on, no led.

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\015 My monitor won't turn on. I am an electronic technician myself, so I started checking. I have both 5 volts and 12 volts from the inverter board that feeds the video board.These voltages are marked on the inverter board. The On/Off line is measuring 0.15 volts, and the Dimming line is 2.6 volts. I also measured 3.3 volts on each side of the power switch, and pushing it makes no difference. I checked the switch itself, and it is good. This tells me that a voltage regulator is working. If the control for turning on this monitor must come from the video board,or must the ON/off line be a voltage developed from the inverter board sent to the video board? If so, this may suggest a problem such as a defective opto-isolator on the inverter board. I cannot find good service literature on this.\015

Answers :

If you have a monitor which has an external power that power supply can be substituted for another one by soldering the positive and negative cords to the back of the circuit board, but I found out that I have to stick something into the power jack to push down a contact thing so that it does not connect with another part of the jack that shorts the connection. I found this out on my own just now. Free lcd monitor, didn't work because it had no power supply and the power button was busted. I am going to school to be a computer engineer, sorry if I don't have the right terminology.
Hi guys, just been reading your posts on the symptoms regarding this montor. I have a very similar problem whereby, no power light is displayed and monitor is totally dead. Any idea where i can get a replacement graphics card? My chip states LHS93K v1.0 THANKS ALL
Repair Help & Product Troubleshooting for Sony SDM-HS73P 17" LCD Monitor

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