Question about Philips 50PP9202 50" Rear Projection Television
Bought this TV at an auction so I have no clue what it was doing before it messed up. When I first bought it it was turning on for 6-10 secs then it would shut off (display was white while it was on)
Componets that have been replaced and order in which they were installed, with testing between each new componet.
MC44603AP IC - 7302
15ohm Resister - 3306
6.8ohm Resisters - 3150 and 3149
STW13NB60 Transistor - 7301 (After disconnecting the convergence amps this blew)
MC44603AP IC - 7302 (AGAIN, damage from voltage arcing 7301)
STK392-120 IC's - 7044 and 7045
Snubber Resister 100ohm - 3165 and 3162
Now after all of the new parts the TV will ONLY turn on if the red yoke convergence cable is disconnected (Connector 1005) The TV works perfectly at this point except for the red is off and the snubber resistor 3165 and 3162 overheat)
With the red convergence yoke plugged in the TV will power up for about 1 sec until the relay is shut off.
The actual yoke on the tube has been tested and is ok. All components located between the convergence amps (STK392-120, 7044 and 7045) and the connector for the red convergence yoke (1005) have been tested.
Any advice would be greatly appreciated.
Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.
Common Symptoms include....
TV turns on only after disconnecting convergence c - 2_bing.gif"h_mi">Screen looks 3D
Here is a quick test....
Using your original remote go-to the settings menu then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move RED and BLUE in all directions - up, down, left, and right.
TV turns on only after disconnecting convergence c - 2_bing.gif't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.
Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution
You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com
Posted on May 30, 2010
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Posted on Jan 02, 2017
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