I have a sharp xg-c55x. I put a brand new lamp. It worked once for about 20mins. Since then it starts warming up & then it turns off. How do i fix or reset? Thank you

Have reset the lamp hours after installing the new lamp? If, not the projector has treated the new lamp as old lamp & refusing to light further. So, reset the lamp hours to zero. To reset the lamp timer do as follows. Plug the power cord into the AC socket of the projector. Switch ON the power of the socket. (not projector) While pressing simultaneously INPUT, ENTER & UNDO on the projector, press ON on the projector. "LAMP 100%" is displayed, indicating that the lamp timer is reset.
If this does not correct your problem then the problem lies in other area. Let me know so that further I can provide you solution. Above things are preliminary

When you replaced the lamp, did you use a patten part lamp or an official sharp lamp. When you replaced the fuse did you check there were no signs of burnt components on the board was the power disconnected when you changed the lamp

To replace the lamp is pretty simple its located on the bottom of the unit the cover has one screw to remove it the cover. The lamp has three screws to remove it theres a handle to pull it stright out.The internet is a very good place the find a new lamp.

Unplu the unit
Locate the user service screw, the lamp door should be underneath the projector.
open the lamp door
the lamp is removed by undoing 2 or 3 screws and pulling out with the handle.
a genuine replacement lamp with cage will mean you won't have to worry about wiring the lamp.
put new one in push connectors in firmly
do up the 2 or 3 lamp screws close the lamp door and screw up
reset procedure usually plug in power while holding down up, left and power and the lamp will be reset.

Hope this helps you
Good luck

Hope this helps

it seems that the powersupply is failed

Have a nice day!
We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip, color wheel,
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Jerry
Lampdeng Limited

I've searched all over...heh, I've got TONS of Sharp service manuals but *not* yours...I did find, however, the xg-e650 manuals on manualsparadise.com. Sharp units, a lot of times, are very similar in architecture, functions, parts, etc. For example, practically any Sharp remote will work on your projector...BTW, the lamp you need is a BQC-XGE850U/1 and sells for $292-389 dollars.http://reviews.cnet.com/peripheral-accessories/sharp-projector-lamp/4505-8309_7-31382143.html?tag=mncol;lst

zoom in and/or move the projector closer to the screen.

it only takes up to a 640x480 resolution. it is a very antiquated projector.

press the source select button. it may have just changes sources.

reset the lamp hours on your projector