Question about InFocus LP 735 Multimedia Projector
After powering up, the unit will run for about 45 seconds and cycle off for about 45 sec, then back on and continues this pattern. When it shuts down, the power led goes from steady green to flashing green and back to steady 45 sec later. The lamp PCB power supply (front right corner) does not loose its input voltage (380 Vdc). There is a spark gap on the board that when voltage across it reaches about 284 Vdc, the system cycles on & off at 45 sec intervals. I thought the spark gap was firing but not sure. I researched the part (EPCOS 800-043) but not able to find the voltage rating. Also, I have disabled the "DPMS".
I've run into the same problem on LCD projectors, and found that simply replacing the lamp does nothing. I believe that it is a software feature, which has to be reset by someone privy to the instructions to do so given only to certified repair facilities by the manufacturer. I also feel that this is something which should be investigated by the US Attorney General, since it violates US law.
Posted on Dec 22, 2007
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Mar 25, 2011 | InFocus LP640 Projector Multimedia...
Feb 07, 2011 | InFocus LP70+ Multimedia Projector
Feb 28, 2010 | InFocus LP120 / 1000 Lumens / XGA / DLP...
Feb 25, 2010 | InFocus ScreenPlay 4805 Multimedia...
Dec 23, 2008 | InFocus Projector Lamp for LP340, LP340B,...
Jul 28, 2008 | Dell 2200MP Multimedia Projector
Feb 21, 2007 | InFocus SOFTCASE, LP425Z Multimedia...
99 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: