[RobertWood]

I picked up a Telex P600 that is not working. The machine powers on but the lamp does not strike. Are there any tell tale signs to look for that will be evidence of a dead lamp?

This lamp is pristine looking. I see no discoloration on any part of it. I would like to know the lamp is likely working before I dig into the projector looking for other problems.


Bob Wood


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~ The Sultan of Cheap ~

 

[David Mendicino]

Bob,

I just took out the metal halide bulb out of my Sharp XV-s55u that was dead. There may, may, be some discolouration at the base of the bulb, but other than that it looks perfect, but its dead. I guess that isn't so helpful.


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David Mendicino

 

[RobertWood]

Thanks, David. Actually that is helpful because I was about to decide that my bulb was good since I don't see visible signs of failure.

Now I realize it's possible I have a working projector but don't have any way to know for sure without gambling a sizeable investment in a lamp.

Anyone have a spare they can rent me to test my projector,

haha?


Bob


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~ The Sultan of Cheap ~

 

[richardkrol]

Can't you just measure the resistance ?


Hope it works...


Richard

 

[RobertWood]

Good suggestion, Richard (why didn't I think of that?).

I just put a meter on it and it's reading open. So I'm assuming it's in rigor mortis (unless someone knows different). Thanks.


Bob


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~ The Sultan of Cheap ~

 

[Jim Story]

From what I read, these metal halide lamps work on an arc across a gap, so you would read an open circuit, even on a good lamp?


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Jim Story

Live long and Prosper

 

[RobertWood]

Thanks, Jim.

I guess that was too easy, Richard. http://www.avsforum.com/ubb/smile.gif

Now I guess I'm back to the $400 lamp purchase gamble.


These high-tech lamps are a real pain. Ordinarily, trying to determine if a lamp bulb is working is as easy as falling off a log. Not to mention that ordinary lamp bulbs don't cost 4-600 smackers either. http://www.avsforum.com/ubb/frown.gif


Bob


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~ The Sultan of Cheap ~




[This message has been edited by RobertWood (edited 07-29-2001).]

 

[David Mendicino]

Bob,

Does the projector have a "light" led or something?

My Sharp does, and it flashes when the bulb is dead.

Sorry if this is insulting (ie. you know it already). Just trying to be helpful.




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David Mendicino

 

[RobertWood]

You cannot insult me when it comes to troubleshooting these things, Dave. My knowledge is beneath insulting believe me.
http://www.avsforum.com/ubb/smile.gif


It has 3 LED's labeled as follows...


Standby/Power On

Temperature

Lamp


When I switch on the main power switch the Standy/Power

LED is red continuously.

When I push the power up button that LED changes to green

and I hear the fan motor start to run.

After a minute or so the same LED changes to flashing red.

I don't think the "lamp" LED ever has lit for me.


One thing which I would like to get the answer to is this.

When the LED is green (the projector would seem to then be

in the operating mode) the power zoom and focus are not working. Since this unit has a retractable lens (it uses a

servo motor to extend and retract it) I don't know if it has to be

extended for the zoom and focus motors to work. And I don't know if all of that is disabled because it's sensing a non functioning lamp.


Bob


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~ The Sultan of Cheap ~

 

[David Mendicino]

Bob,

That is very intesting. I would test it, but my projector is dismantled and being dedusted while I await the arrival of my new bulb.


I THINK that this may be the case...it cuts off all function when the bulb is dead.


The delay in LED lighting may be the boot up time which some projectors have. In the worst case, there may be something more wrong then they bulb.

That would suck.




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David Mendicino

 

[RobertWood]

I agree. If I shelled out for a new bulb and then discovered other problems it would indeed suck (there is no other better word to describe it).


Bob


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~ The Sultan of Cheap ~

 

[Hugomed]

Hey Bob

If you can find someone in your neck of the woods that has a projector or a buisness that rents the projector out just bring the bulb and try it out.

Long shot.


Hugo

 

[RobertWood]

That's not a bad idea, Hugo. I'll make an effort to do that.

Might not be easy though, since Telex got out of the projector business last year and the clone of it (LCD160 )was sold by AmPro which is a now defunct company.


Bob


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~ The Sultan of Cheap ~

 

[Alexander]

Quote:

Originally posted by RobertWood: After a minute or so the same LED changes to flashing red. I don't think the "lamp" LED ever has lit for me.

Specific combinations of flashing lights almost always signal a specific error, usually decoded in the manual.


Luckily, Telex has the relevant information at this lovely URL:

http://www.telex.com/Multimedia/WebP...e!OpenDocument


Specifically, the flashing Power light translates to "Filter holder is not seated correctly -- Check the air filter on the bottom of the unit."


Man, I love being useful. http://www.avsforum.com/ubb/biggrin.gif


Alex


[This message has been edited by Alexander (edited 07-30-2001).]

 

[RobertWood]

Thanks, Alex. That diagram should be a great help to me.

I've discovered an interlock switch which I think apparently disables the lamp when the lamp cover is not seated properly. I'm right now trying to see if that's where the problem might be.


Bob


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~ The Sultan of Cheap ~