Yellow and blue on the screen and corners are off center

I borrowed one of these and got most of the job done. Here's what I ended up doing:
At a site with good drainage, a little uphill, stake down the floor of the tent
Longest two poles go through the twin sleeves in the center/top. They are color coded red and yellow
These two poles are anchored at the base by the center color coded ring_peg
The tube ends of the fiberglass poles. Fit over these pegs.

The slightly shprter fiberglass poles go trhough the two blue sleeves.
These poles get anchored on one end by a yellow ring peg and on the other by a red ring peg. They hold the vented windows up.

The arch shaped pole is threaded through a black sleeve atop the entrance to the. Tent.
The arch is anchored on either side by a red ring peg on one end and a yellow peg on the other.

Stake the lines from the screen windows outwards from the tent

Spread the tarp over the top and stake the corners to shelter the screened top from rain

blue dots on screen,bright blue haze right corner to north westpast center of screen.

sounds like a magnetic field near your screen

Yes, I do. It needs a new light engine. Very costly repair. However, Sony has extended the warranty on many of these LED projector sets. You need to call a local Sony authorized service center and see if your model is covered. Otherwise this repair could run over a thousand bucks.

Sorry, but there is no cheap method of repair for this unless it is in warranty.

This TV will require replacement of the LCD Prism unit.

This Prism blocks and allows colors so that the 3 LCD images may be mixed to produce the final image you see on the screen. When this becomes damaged or defective, it leaks colors (light). This Color Leakage apears as spots on the screens.

Where you see the spots is where the specific spot on the prism that is leaking light, the specific color that is leaking also.

This parts cost alone is normally $500 to $1000 dollars but is usually replaced under warranty.

Good luck.....

Your optical block is going bad. Contact sony support with your model and serial number. They sometimes warranty these even after the 1yr warranty has expired.

The blue filter is burnt out. A very common problem in Zenith DLPs. There are 3 color filters, 1 blue (a pinkish color), 1 green (a grayish brown) and 1 red (it is red) they give you your colors for you picture. This is a simple fix.

sounds like you need to do convergence.

check a this post:
http://www.fixya.com/support/t366692-philips_50pp920217f_remote_color

it solves the same problem on my PTV

This doesn't sound like a programming issue. I had a very similar problem about 6 months ago and I fixed problem. I had cold solder joint on the video power board. It was the board in the middle. The power supply was to the right. The video board had a driver with a bunch of legs. About 7 solder joint where cold or loose. I solder the board and my mitsu wide screen was fixed. Hope this helps.
Andy