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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Dead HP Pavilion v70 Monitor
Hello,
I'm quite new to electronics repair but I believe I do have a basic understanding of things. I've spent the better part of today troubleshooting a dead monitor. The monitor is an HP Pavilion v70, model number: P3209S, chassis: Tatung C7Es. I've followed the FAQ a bit and tried to determine what I should do but I've gotten stuck. Over the past couple of weeks the horizontal deflection would cut out occasionally (wouldn't come back with a gentle whack) and would be fine after shutting it off to rest for a few minutes. Also, the picture's vertical deflection would squash down about an inch on top and bottom, but this could be fixed with a gentle tap, so I suspect it was just a loose connection. A couple days ago it decided that it would not power up at all. There are no indications of power (no static, no clicks, no lights, etc.) Upon opening the case and plugging it in, if I listen closely I hear it clicking quietly like a clock (as in the FAQ.) I've tested the HOT and it appears to be shorted out and I don't measure voltage on it. I'm not sure I'm measuring it correctly, but I'm putting my black lead on a ground and the red lead on each leg of the HOT. I read 0V on each one. Now, I've come to the conclusion that I should replace the HOT, but I'm not sure if this is the right course of action, nor am I sure if it's the full problem. I'd like to know if I've done everything correctly and what I should do next. I have access to a multimeter, 100MHz oscilloscope, and an ESR meter. If there is any information that I'm missing, I'll be happy to give more details if I'm able. I'd appreciate any help in repairing this monitor. Thanks! James Bailey |
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