Question about Philips 50P8341 50" Rear Projection Television

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Congerence replacement i order the Ic .. which board is it and is this the same problem o the 60'

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Re: Congerence replacement

Goto They have repair insturctions and manuals.

Posted on Jul 04, 2008

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When first powered on the picture is very dark, returns to normal for 30-40 minutes and then has horizontal bars scrolling through the screen.

Your problem will be in the power supply of this TV. It will be the board that has the flyback transformer. You will have to pull this board out and find the vertical IC. I think it will be of the LA78XX series. You will have to resolder this IC, and don't exceed the solder. You do not want to weld the pins short. Next replace any and all capacitors near and next to this IC. Could be four caps you replace. As for the dark picture, you will have to inspect the rest of the power supply board for bad grounds (rings around the pins of capacitors, diodes, transistors, resistors and any other ICs mounted on heat sinks. Check your capacitors in the rest of the deflection area, and replace as necessary. Inspect those jumper jacks( that connect to the signal board), these will almost always need resoldering. Now the the other half of the the TV will have a signal board. The signal board will need the convergence IC resoldered. The IC will be of the STK-392-110 series. Solder these pins and do not short them with excess solder. This area will also, sometimes, provide the dim picture you describe. Inspect the board for any and all grounds. Be sure there are no rings around any component soldered here as well. And once again, inspect the jumper jacks (connects the two boards together) and resolder as necessary. Seems like a lot to do and there is. I hope this will help you with the start of repairs. Thanks for asking and show all hands of support!

Apr 18, 2011 | Mitsubishi VS-60609 60" Rear Projection...

1 Answer

Mon image est en trois dimensions

Hi Franceg40,
The main reason of your problem is the convergence board gone bad, check first the bad solder joints in the board, you may replace the convergence IC and resistor around or the entire convergence board for your convenience.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Feb 15, 2011 | Sony Grand WEGA KDF-60WF655 60" Rear...

1 Answer

The colors in my tv are overlapping and picture is wavy that cannot be solved with adjusting the manual converge function and got worse when I tried restore manufacture settings

Bad STK392-120 convergence IC. You need to replace 2 both and also check feedback/return resistors. Convergence IC is located on large signal board with a big heatsink. :)

Mar 31, 2010 | Philips 60PP9363 60" Rear Projection...

1 Answer

I have a convergence problem on by philips 60 pp9202 tv. How do I repair this?

convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail between

Oct 24, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Color crosses wont line up shows 3 colors at once

Your symptom sounds like a damaged convergence IC.

There are two and large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110, and they are located on the signal board (on the left as you look into the back of the set).

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.
There are also two resistors on the front of the board located in the middle that are fusible link resistors, these should be checked for opens and replaced if they are found so.

I would suggest that you contact a service center in your area for a complete diagnosis and repair, as this type of repair can get a little tricky. But if you want to repair the set yourself, just remember to be careful. The capacitors and CRT’s can hold a charge and may shock you.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.

Sep 28, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Have a hitachi projection tv and have a double image, blue one shows up below the main picture.

Hi, your convergence circuit has failed, if you are a very proficient solderer & think you have the aptitude to remove a board from the set you can order the parts from Acme Sales in Orlando Fl. and do it yourself, if not you should call your local shops and get an estimate for the replacement of your "Convergence IC`s".
gl, video-tek

Jun 30, 2009 | Hitachi 60SX12B/13K 60" Rear Projection...

1 Answer

Philips 60 inch projection

The I2C message that you get means the Inter IC communication bus on the system board has gone bad. Replacing the IC would not solve the problem.Philips patented this technology to reduce the number of ICs on the systemboard.There would be a physical I2C chip on the motherboard.
You can read about the technology on the post by philips

I would suggest update the firmware on the board, or try replacing the I2c interface controller chip.


Jul 28, 2008 | Projection Televisions

1 Answer

Magnavox 9P6034C 60...

You need to replace an IC chip on the main power supply board. You can find instructions on

Jan 30, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

TTV won't power up

The correct number is MC306Vome-107FP mitsubishi part # 275P363030. I am not positive that you can get that IC it is considerd obselete you normally have to replace the signal board. However I doubt that is your problem. Have you checked the chassis for corrosion due to coolant leaks?and or bad capacitors? That chassis is prone to crt coolant leaks causing PB corrosion and solder deterioration. The signal board is pricey, If you can locate one.

Jan 21, 2008 | Mitsubishi VS-60707 60" Rear Projection...

1 Answer

Green bowed on screen

I have basically the same problems. Have yet to fix yet but from information I have gathered it seems that all points to the convergence chips.

Nov 04, 2007 | RCA P60921 60" Rear Projection Television

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