Hi there fellow Lumen-Labbers!

I've recently come accross an old Epson EMP-5300 projector with a working lamp in it (tested it in another projector of the same model). However there is a problem with the projector as everytime I turn it on the red lamp light lights up. I am fairly certain that this is due to the lamp timer not being reset. Now the lamps for this particular model have an SOC 100mA fust on them (which I am assuming triggers the lamp timer reset when a new lamp is inserted). I was wondering if anyone had any clever ideas as to how this lamp timer can be reset without buying a new lamp (as the one I have works perfectly).

I have tried running the projector without the lamp in it then putting it in and running it again. I have also tried running the projetor without the lamp and placing a wire between the 2 contacts where the fust would go and removing the wire during operation (to simulate the fuse blowing).

Would be much appreciated if anyone knew of any easy way to resset the lamp timer in the EPSON EMP-5300 Projector.


Thanks!

Novastamina

I'm not sure about resetting it, but cutting one of the wires to the red light would make it go out, if that's what's bothering you!

Please turn the power off first!

LOL, sadly it's not that simple. The projector won't even powerup as it thinks that the lamp has been used past the specified amount of hours. It's really getting quite frustrating, I have a projector sitting here which theoretically should still work it's just the fair-safe mechanism in it which prevents it from powering up

Any help in how to trigger the lamp timer reset, or even a dodgy work-around would be HUGELY appreciated!

Sorry, can't help with that. Have you tried putting a replacement lamp in, and then switching back? Or is the new lamp what you're trying to avoid?

Good luck. You might try projector central or AVS forums to see if they have any suggestions.

Have you checked the manual on lamp reset. If its an old projector, ie mid 90's, it might not even have a lamp reset option.

Also, it might be more than a simple fuse issue. Something might be wrong with the ballast itself.

Victor

Firsty, STOP touching wires while the projector is powered on, the ballast WILL kill you if you touch it.

Secondly, after looking at the PDF tech spec for this projector there is no manual reset for the lamp.

http://www.epson.co.uk/support/manuals/pdf...wner_Manual.pdf

There is a menu reset that Might reset the lamp timer but without the lamp working its going to be a nightmare to get into the menu

Btw how do you know your lamp still works? it could just be dead.

Lamps normally need only two wires from the ballast to run, yours may have some extra wires that lead to the lamp. These are control wires.

Got this off here

http://www.diyaudio.com/forums/showthread....mp;pagenumber=2



Your lamp will be slightly different so this may not work.

Try looking for info about projector lamp retrofitting, there is lots on the net.

DRJ

Hi Guys,

Thanks for the info so far.

Death Ray J, I've taken apart the projector and found that the fuse on the lamp eventually connects back onto the motherboard and apart from the power cables going to the lamp ballast these are the only other wires and therefore must be the control wires.

My problem is that there are only two wire coming off it a brown one and an orange one. Ive tried disconecting this wire and i've tried connecting the brown to the orange one. Both had no effect on the projector which still showed the red lamp warming light and still didn't power up.

I know the lamp works fine because i installed it in another projector or the same model.

There has to be some way to trick the projector into thinking that the lamp is working, or to make it work without the lamp so i can retrofit my own.

I've attached pictures of the various components which make up the lamp control circuit. Could someone please take a look and see if you have any ideas to help me further.

Help is greatly appreciated!











Sorry forgot to label this last pic but you can see where the lamp control cable connects to the motherboard underneath the top board - direct centre of the pic (orange and brown cables with white connector piece).

Erm well if you only have two wires to your lamp these are your ballast wires and should not be shorted.

All the manual says is to ensure the lamp cover is back on as there seems to be a safety switch that will keep the lamp off if its not in place.

The fuse could be a way of detecting a new lamp, it detects a closed fused and blows it to indicate its now installed.

Can you test the fuse with a multimeter to see if its blown??

IF it is blown then there may be a way to trick the PJ.

it would require a 100ma quick blow fuse and some wires, attach the new fuse with wires to the pins, then install the lamp and replace the cover so its all screwed tight.

The PJ might then detect the fuse and blow it tricking it into thinking its just installed a new lamp.

This is all based on the assumption that the fuse is there to detect new lamps and not a safety feature!

Please be careful, a ballast can kill you. the PJ should be fully disconnected from the mains before removing the cover!

DRJ

Hi Death Ray J,

Thanks for your quick reply.

lol, yes I know not to short out the balast wires.

I was refering to the two wires coming off the fuse contact point. you can just see them in the 4th pic coming off the back of the mini-circuit board.

Yes I had thought about the idea of just getting a new fuse and installing that one. Is there anyway to tell if this is a quick blow fuse or not?

I think i'll head down to the electronics store and give this a try.

thanks for your help!

-NovaStamina

hey man I have the EXACT same problem, please let me know if you find a way to get it to work. Thanks


Ryan

pearltoby@gmail.com

I know this post has not had a response in over a year but I was curious to find out if a solution was found...? Anyone?

Sorry, haven't been on the forums in a while and didn't notice the two responses.

I'm sad to say that I never did end up finding a solution to the problem. I tried retrofitting a new fuse to the lamp housing - but I don't believe this was a quick blow fuse and as such this did not work.

I no longer have the projector so cant test the theory properly with a quick blow fuse, but i guess it could theoretically still work?