Return to the CurtPalme.com main site CurtPalme.com Home Theater Forum
A forum with a sense of fun and community for Home Theater enthusiasts!
Products for Sale ] [ FAQ: Hooking it all up ] [ CRT Primer/FAQ ] [ Best/Worst CRT Projectors List ] [ Setup Tips & Manuals ] [ Advanced Procedures ] [ Newsletters ]

 
Forum FAQForum FAQ   SearchSearch   MemberlistMemberlist  Photo AlbumsPhoto Albums  RegisterRegister 
 MembershipClub Membership   ProfileProfile   Private MessagesPrivate Messages   Log inLog in 
Blu-ray disc release list and must-have titles. Buy the latest and best Blu-ray titles to show off in your home theater!

Ehome 8500 Focus issues

 
Post new topic   Reply to topic   Printer-friendly view    CurtPalme.com Forum Index -> CRT Projectors
View previous topic :: View next topic  
Author Message
UncleWill




Joined: 11 Dec 2012
Posts: 413
Location: WashDC area, ViennaVA


PostLink    Posted: Mon Oct 08, 2018 3:53 am    Post subject: Ehome 8500 Focus issues Reply with quote


        Register to remove this ad. It's free!
Trying to beef up the focus on my Ehome 8500.

The focus in different parts of the screen is off (i.e. red is sharp in the top half, soft on the bottom half, green sharp on one side, softer on the other).

Went into the service menu to work on the RGB focus. Don't think it solved the issue.

Not sure what is causing this.

I think I will need to recalibrate the setup from the start. Or could this be hardware issue?

Chassis has 40K hours on it, tubes about 4K hours.
Back to top
View user's photo album (21 photos)
garyfritz




Joined: 08 Apr 2006
Posts: 12024
Location: Fort Collins, CO


PostLink    Posted: Mon Oct 08, 2018 4:43 am    Post subject: Reply with quote

Have you adjusted the Scheimpflug settings? That would produce side-to-side or top-to-bottom focus errors like you're seeing.

Try turning down the contrast, then pull the lenses and look directly at the tube face. If the image is sharp on the tube face, it's an optical issue -- probably Scheimpflug.

If the image on the tube face shows the focus problem, something else is wrong.
Back to top
UncleWill




Joined: 11 Dec 2012
Posts: 413
Location: WashDC area, ViennaVA


PostLink    Posted: Mon Oct 08, 2018 1:43 pm    Post subject: Reply with quote

What are the standard focus settings in the service RGB focus menu? I've tried tweaking them and want to put them back to factory before messing the Scheimpflug settings.
Back to top
View user's photo album (21 photos)
Curt Palme
CRT Tech



Joined: 08 Mar 2006
Posts: 24296
Location: Langley, BC

TV/Projector: All of them!


PostLink    Posted: Mon Oct 08, 2018 2:53 pm    Post subject: Reply with quote

Set the astig and focus by putting the contrast at 100% and look into the lenses with sunglasses on. Assuming the electronics work fine, then you should be able to focus the test grid on the tube face just fine, and any lack of focus is the Scheimpflug adjustments which are covered in the manual. Don't touch the electronic and astig settings on the remote while working on the mechanical Scheimpflug settings.

That should do it.
Back to top
UncleWill




Joined: 11 Dec 2012
Posts: 413
Location: WashDC area, ViennaVA


PostLink    Posted: Fri Oct 12, 2018 3:36 am    Post subject: Reply with quote

Dang, messing up the forum postings.

I asked about this years ago.

This what I need adjusting.

From the 8500 manual.

Anyone recall the driver size and length needed to reach the bolt?



ehome.jpg
 Description:
 Filesize:  104.4 KB
 Viewed:  3205 Time(s)

ehome.jpg


Back to top
View user's photo album (21 photos)
Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Fri Oct 12, 2018 5:06 am    Post subject: Reply with quote

"Bondhus.......James Bondhus" LOL

5/16 Allen, 9.5 inches. Cost you $30.00 mailed.
Back to top
garyfritz




Joined: 08 Apr 2006
Posts: 12024
Location: Fort Collins, CO


PostLink    Posted: Fri Oct 12, 2018 5:33 am    Post subject: Reply with quote

I can't find mine now, but I made one from a couple of stock tool parts at Home Depot -- $15 or so if I remember right (but it's been over 10 years sooo...)
Back to top
Display posts from previous:   
Post new topic   Reply to topic   Printer-friendly view    CurtPalme.com Forum Index -> CRT Projectors All times are GMT
Page 1 of 1
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum