Hello all, this looks like a great forum, hope I can find what I need on here :)

I recently was given a Philips 46" Model # 46PP930217.

I noticed a bluish-white haze around white objects and words on screen and started doing some research on it and found that it could be due to cloudy coolant in the projectors. I took it apart and found cloudiness in the blue gun as well as bugs. Also the lenses were filthy so I cleaned those off with windex and a lint free cloth.

I have a lot of experience with electronics, so I'm not afraid to change this fluid, I just want to do it correctly.

Also, how hard would it be to change the convergence IC's for the blue? I can solder very well, so I know I can do it.

Is there a general how-to for this?

Pics attached.

One more picture showing the blue-white haze.

I'm not seeing a convergence problem in your pictures, but see link in my signature for diy. Search this forum for coolant change threads, there are a few good ones.

I'm not seeing a convergence problem in your pictures, but see link in my signature for diy. Search this forum for coolant change threads, there are a few good ones.

Thank you for the response!

I have searched a bit, but I was hoping for something a little more specific. I'll give it another search :D

What do these controls do?

http://i235.photobucket.com/albums/ee249/Krunk_Kracker/whatisthsi.jpg

That is the "Focus Block". Try NOT to fiddle with those. Three knobs control electronic focus (one for each crt). The other three knobs control the output intensity / power level (one for each crt).

That is the "Focus Block". Try NOT to fiddle with those. Three knobs control electronic focus (one for each crt). The other three knobs control the output intensity / power level (one for each crt).

When I saw the emphasis on the "NOT", I knew I had done something bad. I tried to put them back as they were, but I don't think I got them quite right. How would one go about fixing an issue caused by novicely adjusting those knobs? I got my philips RPCRT used, looking about the same as the pictures above. i assumed somebody had messed with those knobs to make it look like that, so I messed with them to see if I could make it look better. After much reading of this forum, I realize that was a bad move, that had no chance of fixing the problem. I intend to clean everything inside the TV that is directly related to the picture, and more than likely change the coolant, as suggested by the person who started this thread. I'm getting an Avia callibration dvd from a friend soon, will this be able to help me resolve my knob problem? I'm a very hands on person who likes to do everything myself. im determined to fix this tv myself, and have been learning much about the subject to help my endevour.

Responses appreciated,

pv

Don't even bother with the knobs until you have replaced all contaminated crt fluids.

Don't even bother with the knobs until you have replaced all contaminated crt fluids.

That's my plan. The question hidden in all my rambling was... Should the Avia dvd be able to help me fix the knob problem, after all the general maintenance and cleaning is done? I imagine if it is possible using that disc, it will be time consuming for one such as myself who is just beginning. I just don't want to waist that time, if the dvd isn't going to help.

Change the coolant only in the green and blue tubes. The red never has a problem and can be kept constant for alignment purposes.

Remove the CRT boards, disconnect the anode lead and ground clips, loosen and remove the yoke and any magnets or correction windings, then remove the 4 screws that hold the CRT mounting bracket to the bulkhead. Lift the tube out. Remove the lens carefully with the lens facing straight up and dumpout the coolant, careful not to get it on the lens assembly. Remove the expansion bladder and clean all of the parts very well with soap and water. The back of the first lens that sits in the coolant may have a crust on it that is hard to get off. Be very careful when cleaning it not to scratch it or remove the coating. Let the parts dry well and keep all dust out of the system. Put it all back together, using a very thin layer of RTV on the gasket on the first lens, being careful not to get any on the lens. Let that set up overnight with the expansion chamber and fill hole open. Refill with fresh coolant and let sit overnight to check for leaks. Reinstall and align to match the red tube.

The focus adjsutments are no big deal. You can do it with the internal convergence pattern or the menu. Adjust for the best focus both with the knobs on the black box (electrostatic focus) and the lens (mechanical focus).