CurtPalme.com Home Theater Forum

Nitmoe · Joined: 10 Jan 2008 Posts: 60 Location: Iowa, USA

I have just acquired a near mint ECP 4100, which has the 07ms tubes and the early style focus board. This set is beautiful, there are no signs of use that I have seen yet, not the slightest burn, not even a speck of static dust on the tubes or HV leads. This is mostly running perfectly, everything is as sharp as it should be. There is just one issue I have has so far. The red tube is too bright on one side, and too dim on the other side. The brighter the image, the worse it seems to get. I just got this thing yesterday, and I don't want to cause any further damage to it. I was guessing that the red tube is to blame here, but I have no idea. I have only ever owned Sonys before, so this is new ground for me. I currently have two 1031's in use, and one spare with a slightly burnt blue, and one 1270 collecting dust with mildly burnt tubes. For the size and cost of this Electrohome (about $300 usd with shipping) I am otherwise really happy with it. It shoots a nice 70" widescreen in my bedroom. Someone, please help me!!

Nitmoe · Joined: 10 Jan 2008 Posts: 60 Location: Iowa, USA

I was scouring through this projector, and I noticed a label that mentions the sd-187 tubes, which I had previously assumed it would have, and there is also a sticker, which I noticed as soon as I opened the case, which says 07ms tubes. When I first saw the 07ms sticker, I immediately looked at the tube labels, which are the 07ms. Although I am not having any focus issues, is it possible that something wasn't done correctly, or damaged, during this mod? I also wanted to mention, if anyone could give me input as to whether or not running the pj like this could cause damage to other parts, as I have not been running this, and it is sitting where my old 1031 belongs. I would like to use my pj, I like having one. DLP gives me migraines, LCD looks like poo, I like black, analog beats digital in video and audio, I am forced to watch movies on my 22" computer CRT Sad

until this is resolved. If this is just a tube issue, then great, hopefully Curt has one, or whatever part it is that I need. Thanks for anyone who responds to this, even if it isn't helpful.

nettwerkjohn · Posted: Thu Jan 10, 2008 4:58 am Post subject:

i have some mint 07ms tubes if you get stuck... and a full set of spares for the ecp4101/4500...including the new focus block etc...

Andrew Low · Joined: 19 Apr 2007 Posts: 28

**Curt Palme** · Posted: Thu Jan 10, 2008 3:30 pm Post subject:

I'll bet it's the red CRT socket. Swap it and the green and see if the problem changes to the green.

gonyr · Joined: 11 Jan 2007 Posts: 138 Location: western NY

I don't have an ecp anymore, but when I did, I remember reading about something like this.
Is this what you're referring to?

http://archive.avsforum.com/avs-vb/showthread.php?threadid=282004

Nitmoe · Joined: 10 Jan 2008 Posts: 60 Location: Iowa, USA

Curt: Swapped the sockets, no change.
Andrew: Went through every page of the menu, no such adjustment that I can see.
Gonvr: Not exactly, and I am running at 720p60, so this wouldn't apply. But, if you take the left half of that image, and make it the entire tube, then this is the problem I am having. Red shows up all of the way across, but some of the brightness that belongs on one side is on the other side. The image looks fine, no dark areas. It is an even fade from left to right on the screen.

nettwerkjohn · Posted: Fri Jan 11, 2008 6:45 am Post subject:

maybe the red deflection board - i had something similar that i eventually fixed with a new board...

Nitmoe · Joined: 10 Jan 2008 Posts: 60 Location: Iowa, USA

I had considered that the deflection board may be the fault, and I'm still not sure. After reading the entire forum discussion posted by Gonvr, I started thinking it may have something to do with the waveform board. Since Curt hasn't posted any tips or other information regarding adjustment of the pots on this board, I wasn't sure what they all did. I decided to note their positions (they have number markings) and try to mess with them. The last one I tried, which is the top one, directly affected the issue I've been having. So Andrew was right, there is an adjustment for this. I have adjusted this pot to max, all of the way to the right, and this has almost corrected the problem. This being said, the adjustment being off is obviously not the cause of the problem. So I'm still not sure which board is causing this, but it seems the waveform board is a likely candidate. If it isn't this board, the problem has to lie with whatever board or other component is directly affected by this adjustment (if there is just a part, otherwise the affected component would be within the waveform board). So, who has one of these to sell me? I'm willing to gamble a little, and give it a shot, unless someone has a better idea.

**Curt Palme** · Posted: Fri Jan 11, 2008 3:13 pm Post subject:

I haven't seen this problem before, so that's why I didn't give any other info.. Very Happy

I have all of the boards for the ECP, but I'd suggest sending me all of the boards in the back of the set for testing. No sense in spending money on something that you don't need to buy.

Cheers!
Curt

Nitmoe · Joined: 10 Jan 2008 Posts: 60 Location: Iowa, USA

Well, I'm pretty confident it's the waveform board, but of coarse I'm not positive. I've never shipped out of the country before, but I could do it. How much would it for you to just sell me the waveform board? If the cost of the board isn't much over shipping my set to you, I would rather just buy it. If this is the problem, it would get me back up and running sooner. Where my set is now, I have to completely take it down just to access the rear panel. I have the wired remote sitting next to the pj so I can reach it. I actually had the set on the foot of my bed, shining at the wall at the head (not enough distance to focus) in order to play with the adjustments on the waveform board. I am in a temporary living situation, and I don't have access to my actual screen right now (it's 50 miles from me, and I can't drive) Anyway, if you could just give me a price, I will let you know which route I want to go with it. Thanks to everyone for trying to help with this, hopefully I can get this resolved quickly.