Phillips Magnavox 60" model ptv835

If its shrinking this is and easy fix...Goto the site www.TvRepairKits.com and get there shrinking video kit for your model.
As for the colors they are likely just washed out which is due to the CRT coolant. The same site has repalcement CRT fluid for your projection TV also.

Hello, I dont have a solution but I am experiencing the same problem. Did your tv get fixed ? Any solutions that you can offer ? Rudy

What is the model no?

Common problem and fairly easy to fix. 
Problem
Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!

Solution:

Check with the site www.TvRepairKits.com. They have built a kit to fix this problem.

If you have the following symptoms check the site www.TvRepairKits.com . They have a repair kit for this problem. 


Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!



Works on the following Philips Magnavox sets with chassis number



PTV835, PTV836, PTV840, PTV841, PTV842, PTV843, PTV844, PTV847, PTV853 


Or if your Model number is... 



50YP43C101,50YP43C102,50YP44C101,50YP44C102,50YP44C103,50YP44C104,55P9161001,55P9161002,55P9161003,55P9161004,55P9271001,55P9271002,55P9271003, 55P9271004, 55P9271005, 55YP43C101, 55YP43C102, 55YP43C103, 55YP43C104, 55YP44C101, 55YP44C102, 55YP44C103, 55YP44C104, 55YP45C, 60P9161001, 60P9161002, 60P9161003, 60P9161004, 60P9271001, 60P9271002, 60P9271003, 60P9271004, 60P9271005, 60YP43C101, 60YP43C102, 60YP43C103, 60YP43C104, 64P9161001, 64P9161002, 64P9161003, 64P9161004, 64P9161005, 64P9161006, 64P9271001, 64P9271002, 64P9271003, 64P9271004, 64P9271005, 64P9271006, 64P9271007, 9P5031C101, 9P5031C102, 9P5031C103, 9P5034C101, 9P5034C102, 9P5034C103, 9P5040C101, 9P5040C102, 9P5040C103, 9P5040C104, 9P5044C101, 9P5044C102, 9P5044C103, 9P5044C104, 9P5511C101, 9P5511C102, 9P5514C101, 9P5514C102, 9P5531C101, 9P5531C102, 9P5531C103, 9P5534C101, 9P5534C102, 9P5534C103, 9P5540C101, 9P5540C102, 9P5540C103, 9P5540C104, 9P5544C101, 9P5544C102, 9P5544C103, 9P5544C104, 9P6031C101, 9P6031C102, 9P6031C103, 9P60349101, 9P60349102, 9P60349103, 9P6034C101, 9P6034C102, 9P6034C103, 9P6040C101, 9P6040C102, 9P6040C103, 9P6040C104, 9P6044C101, 9P6044C102, 9P6044C103, 9P6044C104, 9P6440C101, 9P6440C102, 9P6440C103, 9P6440C104, 9P6440C105, 9P6444C101, 9P6444C102, 9P6444C103, 9P6444C104, 9P6444C105, PV5571C101, PV5571C102, PV5571C103, PV5571C104, PV6071C101, PV6071C102, PV6071C103, PV6071C103, PV6071C104

Common problem with the model. Check the site www.TvRepairKits.com. They have a fix for the shrinking and expanding screen problem. 

which chip did you replace? and what is the model number of your set?

This is a common problem with this model. The site www.magnavoxhelp.com has a chip kit to fix the video shrinking problem

When you say small do you mean shrunk up top and bottom as well as from side to side. You definitely have a deflection problem either horizontal or vertical.If the picture just shrunk top and bottom you have a vertical deflection problem. Do you have the service manual for your model? If not let me know and I will email you one. Describe the shrinking issue a little more and I should be able to give you some guidance.

philips part# 483520988561 actual part# HCNW136 opto coupler datasheet at datasheetcatalog.com can buy many places just enter it on google.
other fixes philips part# 483520987834 actual # MC34065p and philips# 483520987712 actual# SC78104 some change all 3 and never have a problem again.