Question about Hitachi 51F500 51" Rear Projection HDTV-Ready Television

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Hitachi 51F500 magic focus wont work, blue has "dropped", when I use the magic focus on auto it does nothing, when I use manual focus the grid has the blue scooped down and I can't seem to get it back in line. It is only the blue that is out of register. The unit is 8 years old

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Sounds like your blue convergence module is faulty along with a few resistors. There is two convergence modules in your set(stk-392-020) and when one fails, the both of them are usually replaced with a matched pair .If you have a good knowledge of electronic you may replace them yourself.otherwise you`ll need the help of a tv repairman. Hope this help. Good luck

Posted on Nov 17, 2009

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The color on the tv is messed up the green and red i tried auto and manual magic focus but cannot move the green line on manual magic focus please help


Most likely this set has bad convergence ic's and some open resistors. This is a common problem for projection tv's. Check:
resistors RK42, RK46,
RK50, RK54, RK58, RK62
Output STKs IK04, IK05.
I hope this helps. Thanks for using fixya.

Jan 13, 2010 | Hitachi 51F500 51" Rear Projection...

1 Answer

Blue cast to screen and words at the bottom of screen run uphill.blue does not seem aligned to grid. magic focus did not correct. Can align red and green manually but not blue.


The IC /resistor in convergence circuit(blue) is bad

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 charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Oct 21, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

Our hitachi has horizontal lines across the screen first it was just a small area now it half of the screen what could be causing this?


I have a suggestion that will tell you and me exactly what your problem is--Does set have small button on front that says MAGIC FOCUS? If it does press it and after it starts press it again--it will stop the magic focus and bring up the convergence grid on the screen----you will see a grid of lines and just need to look at them----if red or blue is out of place you have a convergence problem--very common on this kind of set.

If set does not have MAGIC FOCUS BUTTON (IT IS ON THE RIGHT OF THE KEYBOARD AND MAY BE RECESSED) You can remove the front speaker grill and the inspection plate behind it----there is a tiny small push button switch on the left front of the circuit boards--it will have blue button--us something not metal (I use a eraser end of a pencil) this will engage the set into the same convergence mode.

You just need to see what the grid looks like--if it is skewed etc--YOU KNOW YOU HAVE A CONVERGENCE PROBLEM.

If it is a convergence problem I CAN TELL YOU WHAT IS INVOLVED TO REPAIR THE SET---it will depend if you can do it yourself or need to have someone do it for you--most of this repair is just getting at a few parts and being able to do good soldering etc.


Try to check to see if you actually have a Convergence trouble or something else--if the lines on the grid are not white--red or blue bowed or out of place anywhere--it is convergence problem.

Seeing is believing and if you see the grid looks bad.


let me know--I am here to help people---I HAVE FIXED HUNDREDS OF HITACHI SETS WITH ALL KINDS OF TROUBLES--CONVERGENCE IS THE MOST COMMON PROBLEM--BY THE WAY: CONFIRM THAT ACTUAL MODEL NUMBER IS 51F500.


regards, SD TECH

Oct 15, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

Blue outline on the top half of the picture on my Hitachi 51F500


your convergence ic is going bad. usually worth the repairl.

Jun 04, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

HItachi convergence problem - blue only


Replace both of your STKs 392-110s use 180s.

Nov 27, 2008 | Hitachi 51F500 51" Rear Projection...

1 Answer

Convergence problem


it sounds as though you need to have the tv converged

Oct 30, 2008 | Hitachi 43F300 43" Rear Projection...

2 Answers

Red want focus


The fault can be on the convergence board, or in the HV multiplier.

Jerry G.

Apr 19, 2008 | Hitachi 51F500 51" Rear Projection...

1 Answer

Hitachi 51f500 magic focus


convergance amp ic bad

· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 12, 2007 | Hitachi 51F500 51" Rear Projection...

1 Answer

Blue/Yellow out of focus on Hitachi 43UWX10B


You will need the convergence circuit repaired......IC's replaced,
B+ resistors checked and then magic focus activated......T.

Sep 17, 2007 | Philips 60P8342 60" Rear Projection...

1 Answer

Wont turn off, goes to magic focus


enter your menu set up and turn off auto focus and see what happens then,also check your other settings while your there.

Sep 09, 2007 | Hitachi 51F500 51" Rear Projection...

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