Philips 50p8341a 50 in. projection

you can remove the screen but there is a easier way, from rear with cover removed use a swiffer cleaner to get at the webs etc. Gently.

i have a 50p8341A that powers up stays on but no sound or picture is worth fixing.

you need ssb board is bad and you can,t git that part you can send to pts to have it rebuld. yes the stk 392-120 can drag the pix down but if you open it up you see a fouc blook go to the screen red or green or blue
turn it up just a litte the pix will come back. this is a know fact about this with this set i see a lot in my days of sevice ,at quaker tv

Yes that sounds like a bad picture tube ( CRT) you can get a replacement CRT at the following link which comes with instructions on how to remove and install the Tube.
http://servicemanuals.vstore.ca/

Replace the coolant in the CRts thats a common problem with Phillips and magnavox rear projections. Heres a link to the coolant replacement kit for your model. The kit contains the replacement coolant and step by step instructions with pictures.
http://servicemanuals.vstore.ca/product_info.php/pName/phillips-crt-coolant-replacement-kit/cName/repair-kits

The only way to remove the dust and or spider webs from that area is to remove the front bezel assembly and separate the protection screen, it's better to leave a svc. co. do this because the two screens behind that are very expensive. Hope this helps..

Remove speaker girll.No screws to remove grill just pull off.At the bottom of the screen frame you will see 4 1/4 inch screws.Remove screws and lift screen straight up.Clean cob webs and clean off lenses.I do not reccomend cleaning the mylar mirror.It is very delicate and you will scratch it.You can use windex to clean lenses.Good luck.

well it looks like the MSRP is $1600 for that model , but there is no record with phillips?

http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

The front screen with the frame does remove from the cabinet giving you access to the mirror and CRT lens. Remove the speaker grill,remove the four screws on the bottom of the frame, then working underneath a corner proceed to pop the rivets holding the frame to the cabinet. It will seem impossible at first because you have to use a lot of force to pop each one out.When reinstalling,a rubber mallet may help popping each rivet back in (I am not kidding when I say they are tight)