Question about Hitachi 46F510 46" Projection HDTV

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Can an amature replace a convergence board?


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Its a fairly easy fix on the Hitachi sets.

You can get a repair kit that includes all the parts from The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself.

Here are some of the most common symptoms of a convergence problem.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence or magic focus section.

Try to adjust the convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Posted on Jan 29, 2009


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Posted on Jan 02, 2017


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It sounds like bad solder connections in the convergence section but that depends on what you mean by "distorted" - do the colors become misaligned (especially visable with on screen print)?
if so see below info:
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See link for more detail

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If it is a projection TV , like the model in title, then it is not a convergence problem.

Describe the problem in detail and confirm the model number for the TV.

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You need to replace both Ics numbers STK392-560 they are located on large aluminum heat sinks on the D Board. You can get replacements at the following link and they provide free instalations instructions with pics so you can easilly do the repair yourself. Heres the link.

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Its a straight forward repair just take out the convergence ICs and solder in two new ones. takes about an hour from beginning to end. just apply heat sink compound on the new ICs before installing them. And in that model check the resistors right next to the ICs as 1 or 2 of them often burn open when the ICs go out. Let me know if you need any additional info. The ICs cost about 10.00 each you will ned two.

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If this is a ctc 195 chassis then your likely problem is the convergence power supply that is mounted above the main board and the dynamic convergence board. On the board is an IC (usually) that can be changed: STK 730-010 I believe is the correct can check the number, If it has a single transistor on the metal heat sink, I would suggest changing the whole board. Has only two plugs: one on each end of the board.

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Remove the front grill. There are 2 screws on each corner accesable from the rear and 2 screws inside the front door. Push down on the grill and it will unsnap. Remove the pressboard coverplate . You should see the convergence board, it is about 12" long with a big aluminum heat sink. The board can be removed by pressing on the tabs that hold it down. Be sure to mark and unplug the molex connectors from the board. One of the connectors has to be unplugged from the chassis because it is fixed to the board. Once removed you can easily get to the IC`s mounted to the heat sink. Check for any burned resistors near the IC`s.( 2.2 ohm likes to burn) The convergence can be done through the customer menu using the remote. There is no special formatting necessary. Use the number pad to navagate and the select key to change red & blue.

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possible convergence overdrive from the IC's. This will cause the symptom you describe. ....accordianman

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