Can't get the screen to fit

that's got t o do with personnel preference and room lighting , but as a general rule adjust color hue's till the edges of a white color object on screen has just lost its primary color edge

the older projection TV's actually have voltage numbers for the service tech to adjust them too , but im not remembering seeing any in the LCD manuals

Sound like you need to replace the STK's and any blown pico's on convergence board.

Cause of screen burn typically is pixels are no longer showing full range of color. Typically a shop would cycle screens or blocks of very bright colors alternating colors to unstick any pixels not showing full range of some color. Setting tv back to factory default then adjusting could help also turning up brightness. Change color settings from cool to warm could help. Could also be a refresh rate. Verify tv is set to display at same rate as input device like cable box set to output 1080i while tv native is 720p. Just because there is a pic doesn't mean they are synced.if tv has to convert signal from 1080i to 540i then resize to fit 720p tv it may slow refresh rate tv is trying to display progressive scan image but not enough data is coming in so it redisplays previous image on every other line.and new data on every other line.
solution is check output video settings of source to match native resolution of tv. Hd cable box this is common as tech sets output to high resolution 1080i most inexpensive tv are 720p

Look in the control panel settings to adjust resolution to a size that fits your needs--

Start

Control Panel

Appearance

Yoy have convergence issue with tv,try the magic focus/touch focus or manual adjustment in the menu under convergence, if can't be adjusted then your convergence ckt is the problem,you will need a tv tech to repair it.

You could Start with just Cleaning Mirror and top of All 3 Tube Lenses remove Back and try cleaning out All dust and Dirt with Thin Paint Brush then Remove Front Top and Bottom Panels and then you can Clean Mirror and Top Of All 3 Tube Lenses Then Put Back Together and see what Kind Of Picture you have then! Turn Color Off on Menu See if you Have a Black and White Picture?

it need to be adjusted ,the converge is off track.there usually is a settings in the menu directy.should be a easy fix.if you cant have a service tech come and adjust it.the colors should come back when its adjusted.I think it savable

Have you tried to adjust in the customer menu or in the TECH menu? I can tell you how to get into the tech menu--if it will not adjust there you have a convergence circuit problem and I can tell you what is needed to repair the set.


SD TECH

If this is an old 52 projection with bad color your oil in the tubes may need to be changed, focus & screen can be adjusted to improve picture. Changing oil is something a tech defintly has to do. Call a local tech & get pricing. Then u can weigh your options. Also tubes may be weak. If they need to be changed probably won't be worth it.

Don't adjust anything from the rear of the set unless you are a TV repair tech. It can get ugly real quick. 

Try adjusting the convergence using your remote...Pull up the settings menu - goto picture - convergence - etc....See if you can adjust the color alignment back to normal. If not your convergence chips are most likely going out.