Question about HP Compaq iPAQ MP4800 Multimedia Projector
Hello, here is the problem with my Compaq Microportable Projector MP4800
This is what happens: 1. Plug projector into power outlet
2. Turn on the power switch
3. The Standby button light up and is white in color
4. Press the Standby button and it turns green in color
5. There is a clock like noise.. Tic Tic Tic for 20 seconds
6 Then the "ticking" stops and the fan comes on for 40 seconds
7 no projection No light in the lamp
8. Then the projector turns off
9. The Standby button light up and is white in color
troubleshooting : I have looked at the HP Trouble shooting ideas and they do not help
setting changes : Yes we have placed a new projector bulb in the projector
I am currently struggling with this issue.
There is an easily-accessed fuse inside the projector.
I was very excited to discover this last night.
However, before you get you're hopes up (as I did) remember: If the fuse blew, something else probably went first. After buying and replacing the fuse today, I realise that I need to replace or repair the power supply as it pops the fuse every time.
Here's how to get to the fuse:
Take off the lamp.
Now, looking at the projector from the back, you need to remove the left hand side panel.
This involves taking out 2 screws from that panel, 2 from the bottom and the 2 video connector hexagonal bolt things that are also in that panel.
The panel sort of hinges off, starting from the bottom.
You will see the fuse in the bottom right corner where the power lead goes.
It is a slow-blow (time delay fuse) so get the exact same one to replace it. A pack of 10 cost me €4.19 in Maplin, Galway, Ireland.
Anyways, this did not do the job for me... the power supply set the fuses off like fireworks and also blew a few in the socket plug as well (I don't think US readers will have those)
I will let you know how I get on with the power unit....
Good luck to ye!
Posted on Jan 30, 2008
SOURCE: HP vp 6120 Projector
Have you reset the lamp timer ?
If you have and the problem stil occurs you will have to replace the Ballast ( lamp's powersupply ) This is a very common problem with this specific HP model.
Posted on Mar 26, 2008
it is the ballast issue,u can try one of the equivalent ones or just try & rework on the old one, perhaps one of the mosfets is leaky!!!!!!!!
Posted on Feb 08, 2009
SOURCE: no display from projector
try resetting the lamp timer. if that doesn't work: listen for a high pitched whir when you power it on. if you don't hear it, the colorwheel needs replacing. if you do hear it and it doesn't light, the ballast is bad and needs replacing.
Posted on Aug 10, 2009
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