Big Screen TV Gurus'

Shaners · March 30, 2004

My Toshiba 50HX70 has apearantly taken a hit (physical). The kids, wife and dog aren't admitting to it (I Think they're scared).

Anyhow, it appears my convergence is way out of wack in the Blue Spectrum. The positions 7, 8 and 9 are the worst and I can't move them back in far enough with the remote.

Is this realignment that I'm going to need something I can do myself? Or am I better off paying what will most likely be several hundred bucks and have a technician come to my house? Also will it hurt the TV using it like this until I get it fixed?

Greg · March 30, 2004

I think the Toshibas have a diagnostic mode you can access and reset convergence. I'd suggest checking out:

http://www.avsforum.com/avs-vb/forumdispla....php?forumid=63

Shaners · March 30, 2004

I looked inside the TV and didn't notice any obviouse way to adjust the Blue projector.

I'm sure there is a combination of buttons to press on the remote to go into a diagnostic mode, but I haven't found enough info yet...

thanks for the link, and I'll keep diggin'!!!

Import Hater · March 30, 2004

I'd just pay for a professional. Not only will they realign the color guns physically, but they'll clean them and the mirror which will wake that tv up a little. You can also have them cailbrate it to get the very best picture out of your tv.

melbertbloosfan · March 30, 2004

I looked inside the TV and didn't notice any obviouse way to adjust the Blue projector.

I'm sure there is a combination of buttons to press on the remote to go into a diagnostic mode, but I haven't found enough info yet...

thanks for the link, and I'll keep diggin'!!!

Shaners, that's a 50" 4:3 HDTV isn't it?

You might try Keohi.com for some good advice:

http://www.keohi.com/keohihdtv/brandspecif...shiba_tips.html

Have you ever done a 56pt convergence? This sounds like what you need to do to correct your geometry. Get your green grid lined up as best you can and then converge the red and blue to it.

I have the 50H72 which is basically the same tv jus' a little newer. I have converged it dozens of times so let me know if you need any help.

Good luck

stebob · March 30, 2004

It sounds as though your actual gun got moved. Convergence is simply a fine tuning feature that allows "us" to dial it in. I would highly recommend having a professional come in and do this for you. Now, I would be there with him and have him show you what all he is doing so if it ever happens again you will have some knowledge and be able to do it yourself. While you are paying them you might as well have it calibrated, too. Yeah, it'll cost a few hundred, but, believe me it's well worth it. I have included a link to where you can find someone near you that can perform all of this for you.

http://www.imagingscience.com/isf-trained.cfm

Shaners · March 30, 2004

stebob, There was no-one from imaging science that was really local to me... the closest is about an hour from here. I called the local TV repair service and they claim to be able to work on bigscreen TV's. They are calling back tomorrow because the Technician was out for the day. I want to talk to the guy before I commit to him... because I can screw up my TV just as easily as he can!!! LOL!!!

melbertbloosfan, thanks for link and there was alot of info on that site about Toshiba TV's. I'm not sure about the 56pt convergence. I can do a 9 pt from the onscreen menu, but the bottom 7-8-9 are badly bowed. There isn't enough adjustment to even bring them close. The number 8 looks like this...

(blue) +

(white) +

2 plus marks floating over eachother when they should be sitting directlynon top of eachother (Making just 1 plus mark instead of two). I think the blue gun has somehow been physically moved a fairly large amount, and will need to be mechanically adjusted back in spec.

I'm not a happy camper right now...

04-silver · March 31, 2004

This site is pretty good, enough tho it is Panasonic based, might help you.

http://www.panny.tv/

Sounds like you may have to go inside, (service menu) carefull! Make sure you wright your settings down prior to doing anything and save only when good I have read a lot of horror stories from people playing around inside, not knowing a bunch. End result an expensive rug flatner or $500 to convert back to a RPT.

John

Shaners · March 31, 2004

Here is what I see across the bottom of the screen:

Let's assume there is a line of (what used to be) "white words across the bottom of the screen.

Now-- I see a straight yellow line of words across the bottom of the screen, with a blue line of words above it in a "rainbow" type of arch.

Does this sound like a mirror or projector/gun problem?

Also the upper left 1" corner of the screen is goofy too...

Here is a picture I just took... (sorry about the "flash")

04-silver · March 31, 2004

I couldn't find anything at the panny site like your problem exactly except they say blue is the hardest to focus.

I see your pic is good except for the lettering, check that your cables are still properly connected to the in's and out's.

Edit: besides won't cost you anything....

I remember when I hooked up my sub I rearranged some cables(spiders nest) and I mixed up two on the dvd to TV and I got something like yours, don't remember exactly what the pic was like except it was doubled somehow.

John

Shaners · March 31, 2004

I see your pic is good except for the lettering, check that your cables are still properly connected to the in's and out's.

John, actually there is blue ghosting (bow shaped) on the whole bottom of the screen. It's most obvious with the lettering, that's why I took the picture with letters on the screen.

melbertbloosfan · March 31, 2004

I see your pic is good except for the lettering, check that your cables are still properly connected to the in's and out's.

John, actually there is blue ghosting (bow shaped) on the whole bottom of the screen. It's most obvious with the lettering, that's why I took the picture with letters on the screen.

A pic, that might help someone out quite a bit (but not me ).

Another link:

http://www.hometheaterspot.com/htsthreads/...hreads.php?Cat=

Sign up, basic membership is free. Try this site and post your question and pic in the toshiba forum. Lotsa good people over there that are willing to help. I strongly recommend you posting this problem over there.

I would avoid AVS forum as it has turned into a "bleeding edge" kinda site (only DLP's, LCD's or Plasmas need apply).

You might end up having to take the screen(s) off and look into the guns from above. Not a big deal, but ya gotta be extra special careful....

Hopefully Stebob will look in again and be able to give you some expert guidance.

stebob · March 31, 2004

Yeah...looks like gun and/or mirror got knocked out.

Have you tried different inputs on the TV? Composite, s-video, or component? If not, I would try that, too. I could be something related to that input or the cables feeding the signal. Unlikely, but worth checking out before you drop any cash. Honestely, if you don't know what you're doing, it's really easy to fubar your tv. I would go to a local specialty audio/video(high end) store and talk to them and see who they recommend.