CurtPalme.com Home Theater Forum

pottzman · Joined: 24 May 2009 Posts: 24 Location: Sydney, Australia

My G90 had been sitting unused and unplugged at the mains for about 3-4 weeks and when I just turned it on the warm up picture was jumping around erratically for about 10 seconds until the PJ shutoff with orange error 68 Crying or Very sad

. The PJ is mounted on the ceiling so is it actually 68 or is the error code 89.

If I have read another thread correctly I think it is actually error 89 which the service manual says something to do with the EBH board. Not being an electronic guru (soldering and such stuff) would replacing the EBH board fix this problem or could it be a problem elsewhere that is causing the EBH board to malfunction?

I feel I would be able to replace the EBH board myself, but as for repairing the EBH board I wouldnt know where to start.
I have taken a video of the problem to help explain myself better.

Thank in advance for any help or info.

pottzman

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Try swapping the EBH and EBQ boards and see what changes.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Hmm, I just watched the video and I don't like what I see.....

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

You may want to check the code number on ic421 on the YA board. How many hours on the machine?

HaydnG90 · Joined: 22 May 2006 Posts: 1356

CIR Engineering · Posted: Sat Mar 10, 2012 9:16 pm Post subject:

I would suggest doing as the others suggest, but you may have a bad GA or GAA board. If Curt doesn't have them, I have them in stock.

craigr

pottzman · Joined: 24 May 2009 Posts: 24 Location: Sydney, Australia

About the hours and s/n. unfortunately when the dallas chip was changed the hours and s/n info was lost. I know before the dallas chip change there were about approx 4500 hrs. I would have only put about 100-200 on that. how do I do set everything back to factory settings if the pj only stays on for 10 seconds. that doesn't really give enough time to enter service mode hold reset for 5 seconds (or whatever the sequence is I forget) is there someway to do it without the PJ on (like a hard reset button).

thanks for all your info. I will change EBH and EBQ to see what happens. I read that the error will become 8A. If this is correct does that mean it is definately the EBH board?

thankyou once again. this forum is a lifesaver

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

I'm fairly convinced that is an ic421 failure but you can continue testing things. I can easily see an ic421 failure causing a code 89.

Disconnect CN137, CN138 and CN139 from the EBH board and turn on the projector. My guess is it will stay running without an error code but the picture will probably still be freaking out.

HaydnG90 · Joined: 22 May 2006 Posts: 1356

Check out this thread. Someone else had the same symptoms and fixed it by going back to factory settings. This reflects the experience I had with the error 89 issue.

http://www.curtpalme.com/forum/viewtopic.php?p=205857

And you're right this is an amazing resource. Thumbs Up

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

HaydnG90 · Joined: 22 May 2006 Posts: 1356

I hope so too for his sake. That was no fun.

CIR Engineering · Posted: Sun Mar 11, 2012 1:25 am Post subject:

It could very well be an IC421 failure, but I have some hope that it isn't. I've seen this type of failure with power supply problems. Also, the way the image jumps is only in the vertical and not the horizontal. Usually with IC421 failures when the projector exhibits a jumping image, the image jumps with regard to ALL geometry controls, not just vertical.

If you need the YA tested you may ship it to me for a diagnostics. I would try the other suggestions first though and also getting us the lot number off IC421.

We'll see Wink

craigr

CIR Engineering · Posted: Sun Mar 11, 2012 1:27 am Post subject:

BTW, I also have YA boards in stock if it is an IC421 failure. YA's come with a 1 year warranty.

Kind regards,
craigr

pottzman · Joined: 24 May 2009 Posts: 24 Location: Sydney, Australia

thanks for your quick replies. I guess i will swap the EBH and EBQ and see what error I get. I just have to grow a bigger set of balls first LOL.

If i swap them and I get Error 8A does that mean it is the EBH board?

cheers

pottzman · Joined: 24 May 2009 Posts: 24 Location: Sydney, Australia

okay i swapped the EBH and EBQ boards. same error 89 but it didnt even show the warm up screen. it just turned on and off. I read the other thread and also tried removing CN137 CN138 & CN139 from EBH.....same prob error 89, then i also removed CN136.....same error 89. I did however manage to get to service mode reset factory data but the PJ shutdown a split second after i pressed OK for the reset so i dont know if the adjustments were reset or not. should I have done the reset on the service data instead as when I did my setup I was in service mode?

anyway so swapping the EBH and EBQ still gave me error 89 so what would I try next?

cheers

CIR Engineering · Posted: Sun Mar 11, 2012 1:26 pm Post subject:

Spanky Ham · Joined: 22 Mar 2006 Posts: 5643 Location: Comedy Central

HaydnG90 · Joined: 22 May 2006 Posts: 1356

pottzman · Joined: 24 May 2009 Posts: 24 Location: Sydney, Australia

Okay Craig this is what is on the IC421 - CXD305-127R
003A01E

thanks for your help.

Andrew

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

One thing still seems a little odd here. Try unplugging CN135 on the EBH and see what code you get.