20 Most Recent Hitachi 55FX20B 55" Rear Projection Television Questions & Answers


It sounds like what is called a "convergence" problem; 3d looking with colors out of place etc.

Most of these sets use two of the STK-392-150 chips for this (see photo) and you can look inside to see which are in your set.

A pair of the chips on EBAY sells for about 13 dollars and the only other parts usually involved may be a resistor damaged when the chips failed----this is the exception rather than the norm.

If you or someone you know can solder, etc I can tell you the best way to get at the parts and everything you will need to do the repair; for me----I have repaired over 1,000 sets with this kind of problem.

I am attaching photo of typical convergence problem and what one of the STK chips looks like (chip is 2 1/2 wide/ 1 1/2 tall with 18 pins).

If the photos and this information told you something you did not know rate this solution as very helpful as I do this here for free.

SD TECH





Hitachi 55FX20B... | Answered on Aug 13, 2010


Replace Both of your STK ICs they are big black ICs will have part number on then STK392-110s upgrade to STK392-180s better ICs Call Mats Electronics
1-800-628-1118

Hitachi 55FX20B... | Answered on Mar 16, 2010


I just got done putting my panasonic 50 projection back together. There is a thermal cut off relay on top of your bulb box, can normally be seen after removing the back of the tv. With the tv unplugged make sure the area around this relay is clean of dust. If the simple fix dosn't work make sure your cooling fan is coming on with the tv.
Kevin

Hitachi 55FX20B... | Answered on Oct 29, 2009


Hi, I agree that the regulator IC is probably toast but you`ll need a service manual to figure the rest because none of the leds are on which means NONE of the secondary supplies are running, check the chemical fuses and I`m sure some will be open. you can go to encompass parts on the internet to order the sm, trust me you`ll fix it a lot faster, gl, video-tek

Hitachi 55FX20B... | Answered on Jun 05, 2009


There isn't any reset button. All you have to do is to take out the power source. Anyway, double check the wires... are you sure all are well connected?

Hitachi 55FX20B... | Answered on Apr 01, 2009


TV always has high voltage shock risk while repair. As you said you are not familiar with TV repair so better to handle repair person this issue.

Hitachi 55FX20B... | Answered on Oct 01, 2008


I guess i wondering why you think it needs a new power supply, almost always the Bad components are replaced

Hitachi 55FX20B... | Answered on Dec 06, 2007


Replace the main board. Parts on eBay or internet.

Hitachi... | Answered on Sep 02, 2019


Check if there is a reset button on the back or located by the power button on your tv

hope this helps

Hitachi... | Answered on Aug 23, 2019

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