Projection Picture problems


	FORUM HOME	SEARCH POSTS	WHO'S ONLINE	LOG IN	RULES F.A.Q.

TV Forums: TV Equipment: Projection TV Forum:
Projection Picture problems

1 2 3

View All

Print Thread

gervey
New User

May 28, 2010, 5:58 PM

Post #1 of 58 (5908 views)
Shortcut

Projection Picture problems	Can't Post

Hi everyone!

I'm new to this forum and from what I have read so far the help been given in this forum is excellent. I'm hoping that I'll be lucky enough to resolve my problem.

I stumble to this web site because I was looking for information on a Magnavox projection TV.
Not knowing what to expect in the internet I search PTV730/735/740/745 which is the component location of the Magnavox projection TV and here I'm .

The problems I have in this TV are as follow:
Halo around images, Blue color is almost not noticeable, color shift, and the picture is squeeze in on the sides of the TV.

From what I read in this forum I can see that one problem maybe contaminated coolant (which I have to verify) and the mist alignment of the colors but the one that I do not have any idea is the squeezing of the picture on the sides of the TV.
I'll appreciate any help and I thank you in advance.
Is for a good cause. The TV belong to an old couple that live next to my house.

dundee
New User

May 30, 2010, 3:43 AM

Post #2 of 58 (5891 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

gervey,
i am not expert. but my guess is it has to do something with projection thing. its not projecting rays in proper way.
a picture will help. coolant only makes the picture crisp and sorts our haze pic quality. may be the direction of the CRT bulb got aligned due to vibrant movement.

gervey
New User

May 30, 2010, 3:36 PM

Post #3 of 58 (5884 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

Thanks dundee for your response. maybe I didn't use better words to describe the picture. I should it said the picture bows in both sides of the screen. I was trying to find out if the convergence IC when they go bad besides introducing a 3 effect on the picture (color separation) will also produce bowing of the picture vertically and horizontally.
again thank for your comments and help

Ron.M
Veteran

May 30, 2010, 6:56 PM

Post #4 of 58 (5881 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

1st, dundee;....

Quote

i am not expert. but my guess is it has to do something with projection thing.

Since you are admittedly not an expert , you really shouldn't be putting up "off the wall" theories as to what the problem is...
That would be like you , me or gervey doing brain surgery....
Short & sweet;=>...IF you can't "walk the walk" , do NOT "talk the talk".....

Quote

coolant only makes the picture crisp and sorts our haze pic quality. may be the direction of the CRT bulb got aligned due to vibrant movement

Coolant does NOT "make" the pix crisp...
It keeps the face of the CRT "cool" so it doesn't overheat & crack causing dammage to the set while allowing transfer of the image thru the lens to the screen....
Hence the name "Coolant"....
Nuff said....Right ????

gervey;....

Quote

Halo around images, Blue color is almost not noticeable, color shift, and the picture is squeeze in on the sides of the TV.

From what I'm reading here , I think you have more than one problem...

Quote

From what I read in this forum I can see that one problem maybe contaminated coolant (which I have to verify)

Easy to do..... Smile

....

Quote

and the mist alignment of the colors but the one that I do not have any idea is the squeezing of the picture on the sides of the TV.

Answer coming up..... Wink

....

Quote

I was trying to find out if the convergence IC when they go bad besides introducing a 3 effect on the picture (color separation) will also produce bowing of the picture vertically and horizontally.

Answer...YES !!!!....

How much electronic/TV repair background experience do you have ????...

Later....Ron.M.... Cool

........
Veteran & Retired TV technician

gervey
New User

May 30, 2010, 7:46 PM

Post #5 of 58 (5874 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

Mr Ron I have 25 years of experience in electronics but not repairing TV

gervey
New User

May 30, 2010, 8:10 PM

Post #6 of 58 (5870 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

the TV is Magnavox chassis #PTV735/AH01 . I maybe able to locate the STK IC but I know that there is more to check (Fuses, Resistor etc)

gervey
New User

May 30, 2010, 8:12 PM

Post #7 of 58 (5868 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

any help Mr Ron will be greatly appreciated

Ron.M
Veteran

May 30, 2010, 11:37 PM

Post #8 of 58 (5860 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

gervey....

A GOOD model number would be a big help .....
PTV730/735/740/745 covers a ton of models , each having variations of different parts....
Let's start with that...OK.... Wink

.....

BTW:=>.....
Can you take & post pix in case we/us/I need to see something ????..

THANKS..... Sly

.....

Later...Ron.M.... Cool

.....
Veteran & Retired TV technician

(This post was edited by Ron.M on May 30, 2010, 11:38 PM)

gervey
New User

May 31, 2010, 3:01 AM

Post #9 of 58 (5851 views)
Shortcut

Re: [Ron.M] Projection Picture problems [In reply to]	Can't Post

I'll get the model # and I'll take some pic before I do anything else

Thank for your response

dusitntucker2
New User

Jun 1, 2010, 8:56 PM

Post #10 of 58 (5838 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

Hi i was just wondering if anyone could give me info on how to post a new forum as i am having problems with my projection tv.. thanks

jts1957
Veteran

Jun 2, 2010, 1:26 AM

Post #11 of 58 (5832 views)
Shortcut

Re: [dusitntucker2] Projection Picture problems [In reply to]	Can't Post

Upper right corner of any sub forum "Post New."

-------------------------
Location: Far, Far Away

gervey
New User

Jun 8, 2010, 1:22 AM

Post #12 of 58 (5797 views)
Shortcut

Re: [Ron.M] Projection Picture problems [In reply to]	Can't Post

Mr Ron.M

I got the model # 6P5430 W101. I also took a couple of pictures that showing the side bowing of the picture and the other picture shows the color separation. Could you tell me how can I send/post these pictures?

Thank

Ron.M
Veteran

Jun 8, 2010, 7:02 PM

Post #13 of 58 (5778 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

gervey;.....

On this forum (And others) for some reason you can not copy pix directly from your computer to post.... Unsure

....
What I & I suspect others are doing is to upload the pix to:...

http://register.photobucket.com/step1

OR;...

http://imageshack.us/

And then copying & pasting the pix to the post....
Both are FREE & easy to use once you get the hang of it.... Wink

....
If you need help with either site , post & I'll be happy to help you out....

Later...Ron.M.... Cool

....
Veteran & Retired TV technician

gervey
New User

Jun 8, 2010, 11:41 PM

Post #14 of 58 (5775 views)
Shortcut

Re: [Ron.M] Projection Picture problems [In reply to]	Can't Post

Mr Ron

I'll post the pictures there, and I thank you for your patience.

Ron.M
Veteran

Jun 9, 2010, 12:18 AM

Post #15 of 58 (5772 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

gervey;....

I'd apreciate it & so would the readers of this thread if you would post the pix HERE & NOT there!!!.... Smile

...
NOT hard to do , & I can help you do it... Unimpressed

.....
Which one are you using ????....

Later....Ron.M.... Cool

.....
Veteran & Retired TV technician

gervey
New User

Jun 9, 2010, 12:46 PM

Post #16 of 58 (5768 views)
Shortcut

Re: [Ron.M] Projection Picture problems [In reply to]	Can't Post

<span contenteditable="false"><table border=0 cellpadding=0 cellspacing=0 width="100%"><tr><td width="2%"><hr width="100%" noshade size="1" color="#A1A576"></td><td width="10%" align=center><font size=1 face="Verdana,Arial,Helvetica">In Reply To</font></td><td width="87%"><hr width="100%" noshade color="#A1A576" size=1></td></tr></table></span><div style="margin-left: 30px">gervey;.... <br> <br>I'd apreciate it & so would the readers of this thread if you would post the pix <b>HERE</b> & <b>NOT</b> there!!!....<img src="http://www.tv-forums.com/images/smile.gif" alt="Smile" border="0">... <br>NOT hard to do , & I can help you do it...<img src="http://www.tv-forums.com/images/unimpressed.gif" alt="Unimpressed" border="0">..... <br>Which one are you using ????.... <br> <br> <br>Later....Ron.M....<img src="http://www.tv-forums.com/images/cool.gif" alt="Cool" border="0">.....</div><span contenteditable="false"><table border=0 cellpadding=0 cellspacing=0 width="100%"><tr><td><hr width="100%" noshade size=1 color="#A1A576"></td></tr></table></span>

I'm going to use photobucket
and the link is http://i940.photobucket.com/albums/ad242/gervey/ColorSeparation.jpg
http://i940.photobucket.com/albums/ad242/gervey/SideBow.jpg ..

gervey
New User

Jun 9, 2010, 12:49 PM

Post #17 of 58 (5767 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

Having some problems... let see if this works
http://i940.photobucket.com/albums/ad242/gervey/SideBow.jpg

gervey
New User

Jun 9, 2010, 12:56 PM

Post #18 of 58 (5766 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

I guest it didn't ... the pictures are in photobucket ... how can I make them available so you can see them?

jts1957
Veteran

Jun 9, 2010, 5:13 PM

Post #19 of 58 (5757 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

If you're trying to post that as a link, the only thing you're missing is the "url" open/close button at the bottom right of this forum's edit box. Wink

url button - ctrl+paste - url button

-------------------------
Location: Far, Far Away

Ron.M
Veteran

Jun 9, 2010, 5:37 PM

Post #20 of 58 (5754 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

jts1957;.....

What I REALLY want this guy to do is POST PIX !!!!
NOT LINKS !!!!...
Pix are a lot easier for readers as you dont have to wait for a new window to open & load , etc , etc....

THANK you anyway for the GOOD info....

gervey;.....

Here is some info on how to use photobucket;=>....

Upload your pix....
When it's uploaded (Use jpg or jpeg format) , scroll down & click on "save"...
Then wait for the image to show up at "In this Album" & click on "Edit" that's on top left of the pix you uploaded....
That will then load into a new window...Wait for it....
After it's loaded , check to see if the size of the image is right for the forum.....
The size you see is what it may be on the forum...
If it's too small , click where the red arrow is.....
There will be some size adjustment sliders you can use to make the image larger or smaller...
The green/blue arrow is how you got this pix.....
Then you'll see "Replace Original"....
If you made any size changes click on "Replace Original"....
Then you'll get a screen that says your "default album" with the pix you uploaded....
Just right click your mouse over the pix & click on "copy".....
Then go to the forum reply post you are making & right click where you want the pix & click on "paste"....
See how easy that was ????.... Wink

.....

....
Double check how it looks by clicking on "Preview Post" at the bottom of the reply box....
Practice & experiment & you'll eventually get the hang of it....
Remember to ALWAYS "Preview Post" to see how it will look in the thread after you post it.....

If you still have problems , let me know exactly which step is giving you trouble....

ALSO;....
This "may" have been caused by clicking on "Switch to Basic Editor" before you posted this;=>....
(I edited most of the gibberish.)

Quote

GOOD LUCK..... Sly

......

Later....Ron.M..... Cool

.....
Veteran & Retired TV technician

(This post was edited by Ron.M on Jun 9, 2010, 5:43 PM)

shelbydogg
New User

Jun 9, 2010, 6:24 PM

Post #21 of 58 (5747 views)
Shortcut

Re: [Ron.M] Projection Picture problems [In reply to]	Can't Post

Using Photobucket, you want to cut and past the IMG Code.

Then you'll get this;

or Works with GIF files too! to get this:

Rob

Ron.M
Veteran

Jun 9, 2010, 8:00 PM

Post #22 of 58 (5734 views)
Shortcut

Re: [shelbydogg] Projection Picture problems [In reply to]	Can't Post

shelbydogg;......

Thanks for that GREAT info.... Wink

....

But....(There's always a "but")....
I've discovered that when you use links from photobucket OR image & delete the pix at photobucket or image , the pix disappears from your post !!!!....
I believe (I could be wrong) that by copying & pasting , that little bug does not appear.....
I don't like a lot of clutter on my photobucket or image albums , so when I feel the image has outlived it's usefulness , I tend to delete them....
Let's experiment..... Wink

.....
The image below is what I got when I deleted an image...

Posted with copy & paste....(My method)

Now your method (IMG Code);....

I will leave these images alone till after the time says about 4~5 hours later than what it says in the avatar box....
Right now it says;....June,9,2010 9:00 PM
So it will read about June,10,2010 1:00 AM when I delete the image....
See ya then....I'll re-post at that time....
Then I will go back to photobucket & delete the image there & see what happens here....
Fun , ain't it ????.... Wink

.....

Later...Ron.M.... Cool

....
Veteran & Retired TV technician

(This post was edited by Ron.M on Jun 9, 2010, 8:04 PM)

gervey
New User

Jun 9, 2010, 8:00 PM

Post #23 of 58 (5734 views)
Shortcut

Re: [shelbydogg] Projection Picture problems [In reply to]	Can't Post

Ok gentlemen, one little detail .... you should use Explorer as your browser .... it doesn't work with Mozilla FireFox browser....
anyway.... here are the pic

I hope they are enougth to show the problem. I opened the front of the TV and I look inside the CRTs and the blue and green are dirty not the red.... Now Iknow that I have to change the coolant but how do I dispose of the old coolant?

Ron.M
Veteran

Jun 9, 2010, 8:30 PM

Post #24 of 58 (5725 views)
Shortcut

Re: [gervey] Projection Picture problems [In reply to]	Can't Post

gervey;.....

Quote

I hope they are enougth to show the problem.

NO they're NOT !!!!....You have a 54" TV that you shrunk down to a few inches here....
Enlarge it....
But , PLEASE do not go from the size of a postage stamp to the size of Rhode Island !!!!..... Wink

...

Remember this ???;=>.....

Quote

The size you see is what it may be on the forum...
If it's too small , click where the red arrow is.....
There will be some size adjustment sliders you can use to make the image larger or smaller...
etc , etc , etc

And this ???;=>....

Quote

Remember to ALWAYS "Preview Post" to see how it will look in the thread after you post it.....

Quote

how do I dispose of the old coolant?

Not knowing where you live , I have no clue....
IF you live near the Gulf Coast , you could sneak it in with "BP" oil...
I don't think anyone would notice .... Wink

.....

Suggestion;=>.....
We solve the TV picture problem first , then do the coolant....OK.... Sly

....

Later...Ron.M..... Cool

....
Veteran & Retired TV technician

shelbydogg
New User

Jun 9, 2010, 8:34 PM

Post #25 of 58 (5722 views)
Shortcut

Re: [Ron.M] Projection Picture problems [In reply to]	Can't Post

I answer quite a few tech questions in some automotive muscle car forums. I've been doing it since '05. I photobucket certain albums that I never move or delete out of so that my tech pictures won't disappear. They are still there and still show up in my old replies.
I didn't see a difference between your image and mine. They were both gone.
Rob

1 2 3

View All

Print Thread

Search for (options)

- Page loaded in: 0.12 s on (CGI/1.1)