Question about Toshiba 55H70 55" Rear Projection Television

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Replacing the stk392-110 chip

Hi, would like to know how to replace the stk392-110 chip on my JVC AV-48wp74. how to take that chip out of there.

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Re: replacing the stk392-110 chip

Get the $10 desolder iron that radio shack sells. Just be careful not to burn the circuit pads.

Posted on Jan 25, 2008

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Whats the part number for convergence chips on jvc av-48wp74

There are two of them that need to be replced as a set. They are both STK392-110 Convergence Ics you can get the original oem Ics from they are listed under the Integrated Circuit catagory you only need the one set. They also have the convergence repair kit listed for your model under the JVC repair kits the kit has both ICs all 12 resistors and the CD with step by step repair instructions.

Oct 17, 2012 | JVC AV-48WP74 48" Rear Projection...

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I have a JVC AV-48WP74 48 in. Rear Projection

Must know basic soldering and have tools like soldering iron,a desoldering pump or desoldering witchs to replaced parts on the tv convergencce board.U have none of these tools devices and never solder bsfore,better hire the tv tech. to do the job.Cost estimate 300-350 for parts and labors.Tries wesite like, to buy a whole convergence kit,to do it ur self,if u can?

Jul 25, 2010 | JVC AV-48WP74 48" Rear Projection...

1 Answer


Make sure you bought genuine Sanyo chips...if not goto and get theirs.

Aug 05, 2009 | JVC AV-48WP74 48" Rear Projection...

2 Answers

Need wire diagram jvc av-48wp74

That should have everything you need.

Feb 05, 2009 | JVC AV-48WP74 48" Rear Projection...

2 Answers

Need Service manual to line up convergence

I went to JVC companies and a page came up and I selected services and I downloaded the manual.

Oct 30, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer


Dec 17, 2007 | JVC AV-48WP74 48" Rear Projection...

2 Answers

Green tube not converging properly

Replace both convergence IC's.....STK392-110 X 2........T.

Nov 15, 2007 | JVC AV-48WP74 48" Rear Projection...

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JVC AV-48wp74 Red, Blue, Green

no you did the right move but now you align the new pc board ,try to get the service in to enter the convergence alignment section,on most jvc;s it sleep timer ,disply&video status to enter try it but if your not sure of that you can perform the alignment ask a tech to do it. on the remote certain keys do special functions and you need to know what they do or you might make it worse.

Aug 18, 2007 | JVC AV-48WP74 48" Rear Projection...

3 Answers


I had a problem with my TV colors not lining up. One day I turned it on and the green was out of wack. I checked this message board and replaced the STK chips, bad soldering and all led to me just giving up on that and buying a whole new Convergence Board ($185). I just plugged this in and though now my Green lines up okay, my red is out of whack. Is there something I am doing wrong? Can anyone help me? Did i miss a step? Frustrated......Bruce

Jul 29, 2007 | JVC AV-48WP74 48" Rear Projection...

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