Question about Acer Office Equipment & Supplies
Hi! Trying to fix an old Acer P7280 DLP projector, the led is red when power cord is connected, and when i press the power button the led goes steady blue, but nothing happens. No beeps, no fans, no light. I have checked that all the micro swithes for the lid and the filters are engaging. What would be the next thing to check?
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Posted on Jan 02, 2017
SOURCE: Compaq Presario 4400us
Either the new power supply you purchased is not functioning correctly. But, assuming it is now that you are getting some form of power to your PC, it is very likely the motherboard. Whatever fried your old power supply (or it could have just been the power supply itself) most likely fried your motherboard in the process. Probably not the CPU since the MB can't even post.
Posted on Jun 21, 2007
SOURCE: Power up problem
One thing u can do also. Open your system case, remove cmos battery clean cmos battery and then insert like same. And restart your system. Other wise check power connections voltage. If it is ok then definitely it will wirk.
Posted on Sep 07, 2007
You may have a failed motherboard then. Failure of motherboards is usually due to breaking capacitors. A few years ago a capacitor company stole the "recipe" for making capacitors from another company and tried to make their own, unfortunately they did not get the ingredients right and the capacitors started breaking after 2-3 years of use. They sold these capacitors at very cheap prices and a lot of computer companies and power supply makers bought them. This is easy to diagnose. Look for capacitors (caps) (they look like little tiny soda cans) on your motherboard (mobo). They should be perfectly flat on top and not bulged or swelling or leaking anything. The dead giveaway is the fact that you are not getting anything after you changed the PSU. There are a few companies that will repair broken capacitor issues. Also if you add a bunch of extra components without upgrading the power supply you can suffer underpowered situations and that can cause internal parts to fail.
To eliminate some other stuff you could remove the memory and disconnect all the power plugs from the drives and then try to start it up. If it does not change the behavior at all (no beeps, no change in flashing lights) then you probably have motherboard issues. Make sure when disconnecting the memory chips (sticks) that you touch the metal on the inside of the case first to discharge static electricity. If it does change the behavior add 1 component or item back at a time to see what you can find out. Post back with what you find and please rate the solution.
Posted on Mar 30, 2009
It can be the main board or the power supply,
look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
Please post back what you find
Posted on Nov 28, 2009
SOURCE: When I tried to switch
Ordinarily my first thought would be that the lamp is needing replacement. But if it's brand new, the lamp should be OK. Can you open the lamp compartment to see if it was broken during transit, or perhaps it's not fully seated properly. If it's a broken lamp, then I would contact the dealer you purchased it from, or contact the manufacturer directly to have it replaced. Also, is the noise loud and unusual, or just the normal sound of a projector coming on? If it's very loud, it could be the fan motor. Check that the fan is blowing. If the fan is the problem, the projector will shut down to protect itself from overheating. That, too, should be covered under the waranty.
Posted on Jan 13, 2011
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