Question about InFocus LP640 Multimedia Projector
When I plug in the power cord the projector has no power. No light, no fan movement, nothing at all. I was wondering if there is a fuse I can replace or if the systems board will need replacing.
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If you can, confirm the output of the power source! if you have +/- 0V on all outputs then you may have a defective schottky, verify if all 4 diodes on the
secondary are ok ( you can spot a bad one by the short circuit on the 2
The power supply of the lp640 has a protection derived by the functions of TOP 2XX witch in overload stops. therefore disabling the shorted output.
Verify the state of the fuses also.
Good luck out there ,
Posted on Sep 02, 2008
I have an Infocus LP650. Projector has been disconnected and sitting in cabinet for months... probably over a year. When I plugged it in, there was no lights, no power, nothing. I left it plugged in for about 24 hours and the light came back on again. The projector is working again! Maybe the power supply needs charging???
Posted on May 21, 2008
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