I had two of these units in use, and one failed....I tried to get it working, but to no avail and just put it on the shelf and put the other one into service.
The other one failed recently, so i thought id try a little harder on this one....
The symptom was that the monitor would not start...an intermittant problem, but got progressively worse with time...these units run off a 12V 2A wall supply...internal 5, 12 and 3.3 voltages were present....I was making voltage tests at each electrolytic when i noticed that the monitor started....turns out I shunted an open surface mount cap in a logic area with the voltmeter, which allowed the monitor to start......right under the socketed eeprom...
The photo shows the surface mount cap replaced with a radial tubular device marked 10uf@50V....its right under the eeprom in the upper right quadrant of the board in the photo....
The unit i put on the shelf had the exact same problem....must be a common failure mode....hope this helps someone..
The other one failed recently, so i thought id try a little harder on this one....
The symptom was that the monitor would not start...an intermittant problem, but got progressively worse with time...these units run off a 12V 2A wall supply...internal 5, 12 and 3.3 voltages were present....I was making voltage tests at each electrolytic when i noticed that the monitor started....turns out I shunted an open surface mount cap in a logic area with the voltmeter, which allowed the monitor to start......right under the socketed eeprom...
The photo shows the surface mount cap replaced with a radial tubular device marked 10uf@50V....its right under the eeprom in the upper right quadrant of the board in the photo....
The unit i put on the shelf had the exact same problem....must be a common failure mode....hope this helps someone..
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