Guys,
Starting a new thread around the hour count on the Marquee 8500 from the "Some of you may be interested in this..." thread. Attached is a screen shot. Any idea of what may have caused this? Firmware glitch? Anyone ran across this before?

Hehe

A prototype, from about 6000 B.C. it would seem.


.

That is too cool!!!!


http://www.avsforum.com/avs-vb/attachment.php?attachmentid=142604&d=1242178610

Athanasios

Man. I'd love to see what the tubes on THAT look like. And the emission seems pretty good for something with 71 million hours on standby, eh nash? ;)

:eek:, for this to be true the projector would have to have been turned on in 14,302 B.C. and left on constantly. :D

It was probably made by the people that crossed the frozen Bering Strait and moved into Canada.

http://www.fsmitha.com/timeline.html

Scott

Someone was REALLY addicted to reality shows?

It was probably made by the people that crossed the frozen Bering Strait and moved into Canada.

So that's how Electrohome became a Canadian company designing and manufacturing CRT projectors!!

Judging from the responses, I'm guessing this is not a common problem or one the group has seen before! :p

Too bad I can't get the history on the pj. Oh well, it has new tubes and almost fully refurbed boards (glad they at least left me something to work on! :)), so I will start my counter at 71,582,432 hours

Judging from the responses, I'm guessing this is not a common problem or one the group has seen before! :p

Too bad I can't get the history on the pj. Oh well, it has new tubes and almost fully refurbed boards (glad they at least left me something to work on! :)), so I will start my counter at 71,582,432 hours

Hi,

It might be lottery number. Good lucks

Hi,

It might be lottery number. Good lucks

I'm not that lucky of a person! :p

Does this part of the firmware reside on one of the chips on the CLM? That is one of the boards left untouched. Scott, any firmware versions you know of that had glitches like this?

this info is kept on a chip on back plane. more than a three hour job to get the back plane off..

Athanasios

That's freaking funny.

Adding to it, here is a screen shot of the model and serial screen. Notice the odd characters in the model number and serial. Not sure if this has a hand in the screwy hour counter

Adding to it, here is a screen shot of the model and serial screen. Notice the odd characters in the model number and serial. Not sure if this has a hand in the screwy hour counter

Looks like the university students had that projector for a project! It might explain all the new repair work you mentioned.
With The custom Hours and now seeing this pic it shows obviously someone has had some fun.


Bruce

Makes sense that this would be the chip on the backplane. Just strange that the menus work, just the data in it is corrupt. Does anyone have the schematic for the backplane? Only two active components that I can see, the IC and a cap. I'm thinking maybe that cap is bad (which I am assuming is a noise filtering cap), and is causing the IC to store screwy data. Just not sure I want to spend a full day on it, only to find it won't restore the proper data anyway! :D Not sure if any of you have repaired a backplane before and have experience here?

I saw Niktec on the Bay has a backplane for cheap, but this won't help me much if that IC loaded iwth another projector's hours, model and serial.

I learned quite some time ago that it's possible to reset the hours timer if you know the factory password and aren't too cautious. Or change the serial
number to a bunch of zeros. Or both.

My machine's chassis had almost 50,000 hours on it when I tore it down to
refurbish it and rebuild it as a fully upgraded, up to date 9500LC with fresh
tubes. Emission on the original tubes was pretty low, to say the least. In
a darkened room, looking in the CRT faces with all settings cranked to max
gave you a visible red image (barely visible on a screen) and green was a
shadow on the CRT face, but blue was totally not visible with the naked
eye. Not even when I was fully dark adapted.


That same chassis now reads about 300 hours, which is just about right
for the tubes that are in it now.

CJ

Found that this was a memory issue. Nothing wrong with the EEPROM on the backplane itself, just somehow corrupted itself. How it got corrupted will probably remain a mystery, but the projector is now properly storing the model, serial and hours information.

Paul

Found that this was a memory issue. Nothing wrong with the EEPROM on the backplane itself, just somehow corrupted itself. How it got corrupted will probably remain a mystery, but the projector is now properly storing the model, serial and hours information.

Paul

Sooooooo. ummmm what are the real hours?

And how did you reset the Eprom to get correct hours?

Athanasios

Sooooooo. ummmm what are the real hours?

And how did you reset the Eprom to get correct hours?

Athanasios

Unfortunately I will never know what the real hours are on the projector since the memory was corrupted, but I was able to reset the counter, as well as edit the # menu to input the proper model and serial numbers. ;)

Athanasios, don't take this the wrong way, but I don't want to publish what I did for two reasons. The first is that there are some settings not to be messed with. The second is the integrity of the hour counter.

It can be done though!

Paul

Definitive proof of time travel.

Definitive proof of time travel.

Yep, I found a loop hole!

Adding to it, here is a screen shot of the model and serial screen. Notice the odd characters in the model number and serial. Not sure if this has a hand in the screwy hour counter

I didn't think an 8000 could run 4.2 software? Guess I was wrong!

I didn't think an 8000 could run 4.2 software? Guess I was wrong!

CZ Eddie,
If you look closely at that picture, you will see that it doesn't say 8000. It has two copyright symbols where the 50 should be. Further, going into the factory settings menu, the mode 8500 was tacked onto the serial number field. Basically, the memory got corrupted. This projector is an 8500.

Paul