Convergence problem Hi there, i have an old Philips 43pp925/79 rear projection tv. A few weeks ago convergence ic went bad, so i replaced them both and i replaced 6 resistors. Now there is no bending on the screen but the color is all over the screen. I tried to align them from menu but i can't move red or blue dots. i dont know where i went wrong. it looks like 3D. someone with a solution would be greatly appreciated.

Hi,
It seems problem with convergence output section of tv and convergence output ICs need to be replaced by professional because it requires soldering work with proper tools.
Please call local tv repair shop to get tv repaired.
Thanks.

A very common problem with this TV model. You have a bad signal module or a bad small signal board. Leave your TV unplugged for a few days or a week. Then plug this TV and power on. If the TV comes on and plays well for a few seconds and goes out, the SSB needs replaced. The second thing would be to pull the back cover off. If TV is already on,you can see the rear filaments on the TV tubes lit. Still no picture..then your the signal module is bad and the Convergence ICs and resistors will need replaced. This is a good starting point. Definitely one of these two problems.

You have bad convergence ICs. There are 2 ICs in the convergence circuit, one is for the Blue the other is for the Red. You can buy 2 ICs for under $40.00. Replacing these ICs require soldering and desoldering skills. Sometime, the resistors in the convergence circuit go bad also. Be very careful, there is a very high voltage in a CRT projection TV the voltage is over 30,000 volts.
Best of Luck
Sabre

It looks like you have a problem on your convergence panel. Look for burned resistors near the STK-* IC's. One or more of the STK-* IC's may be bad. When the resistors get hot they smell but so do the IC's. You can replace the bad parts or you should be able to replace the entire panel then go thru a convergence alignment.

You will have to go into Service Menu to realine convergences and What was the STKs numbers you replaced/ and did you go with same part number?I think i have service code for this set will have to look thur my files.

Bad chips...There are a ton of cheap fakes out there....Or bad resistor...

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

• Screen Looks 3-D
• Colors wont align
• Screen may look distorted
• No Audio/Video - makes a chirping sound.

Example Photo:

Problem #2 CRT Fluid has clouded over.

Symptoms

• Dull Video, Washed out
• White/Bright looking video
• Halos around objects
• Red/Orange looking

Example Photo:


You can see more examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

the resistors are 3149 through 3160

Is the power indicator flashing three times? If so the Ics have shorted shutting the set down. You will need two STK392-110 convergence ICs. You can get replacement ICs at the following link with free installation instructions.
http://servicemanuals.vstore.ca/

can the remote move the clors in all 4 directions? If not the convergence ICs need to be replaced. Also check the resistors that power the ICs they are located right next to the ICs

good job