Question about Proscan PS56670 56" Rear Projection Television

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Ps56670 convergence stk's.. part #?

Anyone have a part number for the ps56670 stk's?

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SOURCE: Convergence Problem w/Proscan PS56670

IN THAT CASE YOU NEED TO REPLACE THE CONVERGENCE STK'S AND SOME TV'S NEED A INTERNAL ADJUSMENT AFTER REPLACE THE CONVERGENCE.

Posted on Jan 18, 2008

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Convergance chip


devices: Any Projection TV with a Convergence Amp board

If I knew which Mitsubishi Projection TV you're looking at, I could help quite a bit more. In general, the "convergence chips" on a typical Convergence Amplifier board are actually two STK's mounted to large heat sinks. "STK" is electrical engineering slang for "Convergence Amplifier Integrated Circuit".

Here's a helpful Solution archived at FixYa:
http://www.fixya.com/support/t4337218-image_bowed_line

You'll see in the photo that the STK on the PC board actually have part numbers on them that begin with "STK".

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1 Answer

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Hi:
Your problem is the convergence circuit, you need to replace the convergence Ic's there are two large black IC's mounted on a large metal heatsink. The part numbers are STK-392-110 replace them with the same part number or use STK-392-120 for better and long lasting.

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This may sound odd but try moving the remote further from the set. I have seen similar issue with my 42H81.

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Please, can anyone tell me which STK39x-xxx convergence ic's are used in a Panasonic, rear projection TV, model PT-47WXC43


Your STK numbers are on the ones in your TV Big black ICs STK if they are 110s,120s,150s Use the 180s instead.better ICs For EXample STK392-110 ect.....

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1 Answer

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Hi, the "trick" to this is you don`t need the samsung part number because the stk 392-040 is actually made by Sanyo, call this number and you`ll get exactly what you need 1-800-575-9833 there in Orlando, Fl. and only sell original Sanyo stk``s which is what came in your tv, make sure you check for burnt resistors around those stk`s before installing and powering up your set with the new stk`s, video-tek

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2 Answers

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This unit does not use the STK series convergence amps.The convergence power supply is what you need.I will provide that number for you after while.

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1 Answer

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The convergence problem is likely to be in the convergence power supply which is located above and between the two boards which lie flat inside the chassis. The power supply has a chip on it which is a common problem (If it is not the transistor type then change the whole board.) part number on the chip where the metal heat sink is located. Part number may be STK 730-010 or STK 730-130 both number will work and must be unsoldered and new soldered in.

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1 Answer

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1 Answer

Convergence Problem w/Proscan PS56670


IN THAT CASE YOU NEED TO REPLACE THE CONVERGENCE STK'S AND SOME TV'S NEED A INTERNAL ADJUSMENT AFTER REPLACE THE CONVERGENCE.

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