CurtPalme.com Home Theater Forum

[menec]

Hi!

I have a problem with an Electrohome Marquee 8500: It seems that it doesn't save all the geometry settings. I can adjust everything for a nice picture, but chances are high that if I turn on the projector some time later some of the adjustments are lost. Most obvious is the loss of the top and bottom pin settings (so the bottom and top of the picture isn't straight anymore but looks like a bow).
I suspected this behavior is caused by some bad battery and so I changed the battery on the CLM/Microprocessor board (the little orange "renata power module" see http://curtpalme.com/ElectrohomeMarquee_Layout10.shtm) but that didn't help.
My setup looks like this:

Samsung BDP1500 -- HDMI/DVI cable -- HD Fury -- GammaX -- VGA/5BNC cable -- Marquee

Both the HDFury and GammaX use the external power supply.

Any ideas or suggestions what could be wrong?

Thanks!

[Sparky015]

As soon as I read the title of your post, The CLM battery came to mind. This is the same thing that happened to me with my 95 vintage M8000 about 5 years back. Did you check the battery that you removed to see if it is still supplying the speced power? Also, did you do the same thing with the new battery? This would tell you if the battery was the problem to begin with. Also, those Renata batteries I believe are obsolete, so checking the new one to be sure it wasn't spent before you even installed it is a good thing as well. One other thing, depending on the CLM version a different Renata battery was used. Did you get the correct one? Sorry if this sounds demeaning. In order to effectively troubleshoot, just covering all the bases!

[Sparky015]

One other thing, any error lights on power up, or is the only thing that you notice wrong, loss of memory?

[menec]

Hi Sparky,

thanks for your answer!
The old battery had still about 2.9V the new one is about 3.06V. I checked the voltage of the new renata before soldering it onto the board. But I think it's strange that only some parameters are lost. I would expect that the memory is lost completely if the battery fails.
The new renata is the exact same model as the old one. Was pretty hard to get btw since theses are industry parts usually not sold separately.
Never seen any error lights while the PJ is running.

Could this problem also be related to the video source, the HDFury or one of those features like ASR?

[Nashou66]

its not the battery, did you unlock the set up when doing the convergance and geometry settings? if not then you need to unlock it then lock it after the change.
Utilities,source,3(to lock or unlock)

Athanasios

[loribates]

[draganm]

[menec]

Thanks for all the suggestions!

- I did not explicitly unlock the setup. Just reset the projector and started with the adjustments. ASR was off when doing the adjustments, since I read on the forums here that it's likely to give you lots of trouble with convergence settings etc.

- loribates: That sounds kind of complicated. I never touched anything of the copy to and memory settings. Is this really necessary?

- But again: If the setup is locked or maybe not even saved correctly due to the fact that I never copied around anything, I would expect that the settings are lost EVERY time I unplug the PJ. This is not the case. Most of the time it will lose the settings but from time to time settings will be available even after a week without power.

- draganm: Thanks for the tip with the caps. I will give the setup procedure with unlocking etc. a try. If that doesn't help I'll have a look at the caps on the CLM board.

[loribates]

Does the loss coincide with a signal/resolution/source change? I save my setups to channels. Setup with the blueray active while unlocked, do my adjustments, then use copy setup to: keep same input source, assign channel (if just making adjustments, no changes under src or channel) just OK the copy, then I lock it. Do the same for my next source (HD player, cable box, whatever). on its assigned channel and I have never lost settings since doing it this way.

[Nashou66]

Lori, do you mean you save the current set up tot he same set up? if so its not necessary. just unlock while in that channel, make the changes and lock. now that channel should save your new changes. Only use copy if your setting up a new res that is close to the one your copying. so say from 1080i to to 1080p. then only slight convergence is needed. get it?

Athanasios

[draganm]

[loribates]

[AnalogRocks]

[AnalogRocks]

[Sparky015]

good call with the memory lock feature. I never lock it, so I didn't even think of that. My next thought was the electrolytics, but definitely a longer shot than just a parameter setting.

[draganm]

yeah but the point is you shouldn't have to lock if the ASR is off. The lock feautre is there to idiot proof these machines when they're in a public environment and to save the settings put in the by "qualified personnel" . Any machine that is randomly dropping settings is not running correctly.

[loribates]

[MrBlonde83]

I have a similar problem with my ECP 4100.. when i switch to a different RGB input, i have to do the convergence again when i go back to that input. How do i retain the settings?

[menec]

Hi,

ok I did some testing today and it seems that my problem indeed is not directly related to the setup memory. I tried loribates suggestion (copy the setup to the current memory) and also played around with locking/unlocking the current setup. No luck so far, geometry settings are not applied after power down.
What I noticed: I wrote down the values of the adjustments I made and they stay the same even if the picture gets screwed after a power cycle.

Does this point to worn out caps or maybe something else that goes wrong here?

[Nashou66]

It might be the Caps and resistors on the CVA if all other settings like contrast and Brightness stay the same after a power down.

Dragan,s upgrades will fix this... unless it is something else like a bad memory chip on the CLM but I have not ever come across that..EVER.


Athanasios

[draganm]