Question about Hitachi 53FDX20B 53" Rear Projection Television

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53FDX018 BLURRY PICTURE RED OVER TONES

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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:
http://www.eserviceinfo.com/
http://www.digitalhome.ca/forum/search.php
http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 05, 2007

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Posted on Jan 02, 2017

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LEFT SIDE OF PICTURE IS BLURRY AND COLORS DISTORTED


Does that set have whats called a color wheel, if so that maybe you problem, and replacement is how you fix it.

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Blurry picture with green and red halos around


Ur convergence is dead.Must replaced 2 Convergence ICS,and some or all the resistors.Know how to solders?Buy a convergence kit Tv repair World.com,Tvrepairkits.com to repair it ur self.The shop will cost u $300 for parts and labors.

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1 Answer

Picture is blurry


this is a problem wit your stk392-110 convergence IC's - One has gone bad and the both should be replaced. Also, check the large resistors near the convergence IC's - it sounds like one of them may have burned up..

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1 Answer

Blurry Images


Hello paulaspec,

You have a problem with the three factors, and they are screen voltage, focus voltage, and control (focus 2) voltage. Basically these voltages have to be adjusted since the components in this section have aged some. These controls are usually located in the television on the IHVT (Integrated High Voltage Transformer) or as it is also called the flyback transformer. these controls must be adjusted together, along with the color controls. Here is how the adjustment is done (You will need a schematic diagram, a DC volt meter, and a color bar generator to do these measurments):

 

1) turn color and tint fully counter clockwise until you have a black and white picture.

 

2) connect the color bar generator to the TV (ch 3) and turn it on, you should see bars in various shades of gray

 

3) adjust as best as possible the color and tint controls to obtain the color bars on the screen Red Green Blue.

 

4) measure the voltages on the focus, screen and control grids of the CRT and match them to the schematic digram measurements.

 

5) adjust the focus screen and control grids to match the ones on the schematic diagram

 

6) once this is done then you adjust the color controls once again to obtain the red green and blue bars on the TV screen.

 

This should help if the CRT (picture tube) electron guns are still good and if the flyback transformer voltage supply is working.

 

However if you do not have a background in electronics please take the TV to a shop for repairs.

 

I hope this helps,

Thank you,

Shuttle83

Oct 16, 2007 | Sony KV-20M20 20" TV

1 Answer

Red screen


It sounds as though your Picture tubes are getting weak or theres a bad capacitor in the screen drive circuit. The only way to tell would be to call in a tech to diagnose this problem with his test equipment. A tv set is not a place for an unexperienced person to play with. Good Luck

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