Question about Hitachi 50UX57B 50" Rear Projection Television

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Pin cushioning or barreling.

I have a hitachi 50UX53K projection tv.Which is having a pin cushioning picture.The service tech just replaced the PNP module before this started.

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  • Kristian Watkins
    Kristian Watkins Mar 05, 2008

    I just bought a 53" samsung and have a pincushion problem All I need to know is how to realign the glass, (I think)



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Posted on Jan 07, 2008


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Posted on Jan 02, 2017


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1 Answer

Hitachi convergence problem

You need to re-solder the circuit board that contains the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. You may be able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. Take the appropriate cautions working around the high voltage of the set & use a non-conduting piece of wood to push the heat sink when we doing tests.
Best of luck, hope ya fix it.

Jan 22, 2008 | Hitachi 53UDX10B 53" Rear Projection...

2 Answers

Mitsubishi VS50802 CRT rear projection

that is the capacitor.. that shouldnt be that expensive, so i guess they ripped you off.. in my country the repairment cost you less than 10$..

and yes, you need special tools and knowledge to fix this, so i would recommend you to go for some repairman before you can electrocute yourself trying to fix it, even if its unplugged...

Dec 26, 2007 | Mitsubishi VS-50800 50" Rear Projection...

1 Answer

The background color on the tv is starting to bow in different directions. the original picture looks good but it looks like there is a shadow below it that is a different clor and wavy.

Hi, it's look like you have a convergence module defect and pin cushion problem;/after replaced the module the tv set will need to be adlust.....
that as to be done by a tech
hope that gives you an idea
have a nice day...

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

1 Answer

Picture goes bad (fuzzy&scrolls&lines) on Hitachi projection tv

Sounds like your convergence modules have gone bad. They have 21 close spaced pins to unsolder and resolder. You'll need a soldering iron with a fine point tip and thin gauge solder to do the repairs yourself. Solder bridges between pins are common when soldering these module pins, so have some unsoldering wick handy if you're going to fix it yourself. You can get parts from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

Jun 14, 2017 | Hitachi 50UX57B 50" Rear Projection...

2 Answers

Problems with my 50 inch hitachi ultravision projection screen tv

check the solder around the area of the vertical IC. solder is either cracked or else cold. Cold solder appears as dull. Resolder anything that isnt shiny.

May 20, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

I have a 50 inch hitachi ultravision that has no picture or sound but power light is on

Probably a 'cold or detatched' solder joint on a component on that perticular circuit board you are 'wedging' with a plastic rod.

Apr 16, 2008 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Picture pincushion

converenge amp ic bad or loose connection

Dec 25, 2007 | Hitachi 50UX57B 50" Rear Projection...

2 Answers

Problems with my 50 inch hitachi ultravision projection screen tv

the best thing 2 do is buy a new one and get guarnteed with it again
if u try 2 fix it it not 50% working

if u got guarnteed then take it back (or phone them to come)

Nov 07, 2007 | Hitachi UltraVision CineForm 55VG825 55"...

1 Answer

I have a 50 inch hitachi ultravision that has no picture or sound but power light is on

you have lookse connection on the video convergance amp ic

KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:

Nov 04, 2007 | Hitachi UltraVision CineForm 55VG825 55"...

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