Several years ago we purchased a Philips 60" Rear

You will need the original remote to acces the convergence setting adjustments. You can get the original remote for your model from www.tvrepairworld.com

There are no a whole DLP tv model Philip convergence board out there to buy.U only can buy a convergence kit,came in parts like 2 STK convergence ICS and some or all of it resistors parts for sale.Hire a shop to fix ur DLP tv convergence board.They'll charge u like $300-350 for parts and labors.

Parts for that model have been discontinued for several years now. But you may be able to get a used CRT ( Picture Tube) from www.tvrepairworld.com

The convergence ICs need replaced and likely several resistors in that circuit.

is it nothing on the screen at all? if so your projector bulb blew. they usually cost a coupole hundred bucks

Sounds like your regulator ic is about to go, not an expensive repair but you have a good thought about buying a new set. If your fluid has never been changed I bet it's due also. Give the choice serious thought.

You can find a replacement Philips/Magnavox fresnel screen, in stock, for this model (51MP392H/17) at this following link from a major parts distributor:

Philips / Magnavox 51MP392H Replacement Part Fresnel Screen

And here's a link for the Lenticular (middle) Screen, if needed:

Philips / Magnavox 51MP392H Replacement Part Lenticular Screen

could be the flyback as some eat them depends on how old it is, and what model it is be more specific. also possible high voltage divider box

You can get a repair kit for the shrinking/expanding on www.magnavoxhelp.com. This is a common problem with this model.

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html