Question about Hitachi 50SBX78B 50" Rear Projection Television

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I have the same problem as above. I have a Hitachi 50SBX78B and it was working great until some water from the plant on it got into the screen. Now the red light comes on for a split second, then goes off. Helpl!

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  • Hitachi Master
  • 17,129 Answers

Unless the main board is checked the damage to the board cannot be accessed. so open out the set and check on for any failure of fuse or fusbile resistors that could have opened out with the water shorting.
If water is still found use a dryer to warm off the moisture.
It area of the water spill must be checked for the possible damage

Posted on Sep 15, 2010

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Posted on Jan 02, 2017

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Hitachi 50SBX78B Horizontal lines and bow


John, Hitachi site is down at the moment, if you remove the clips on the front of the IC`s you will see the numbers of the convergence ic`s, and yes they are a pain to get out, they are probably stk 392-110`s if they are the originals, you`ll have to un-solder 36 pins total to get them out, check for burnt resistors in the general area of the ic`s and replace any that are burnt before turning the set on,be sure to order a tube of "heat sink compound" to apply to the back of the new IC`s, once on the set will probably still look poor, this is normal, run the set for minimum of 15 minutes then push the " magic focus button " inside the front door panel, after it has finished running magic focus it should look great, video-tek

Feb 08, 2009 | Hitachi 50SBX78B 50" Rear Projection...

3 Answers

Hitachi 50SBX78B


Good Day, dpmc;

There are many items in the TV that can cause this concern. CAN you repair it if I guided you through this??? I will..... If not call an authorized service center and get an estimate of the cost of repair.
Come back on this sight and I will help you further in detail.

Good Luck, big IRISH.

Aug 09, 2008 | Hitachi 50V500 50 in. HD-Ready LCD...

1 Answer

TV popped and turned off and won't come back on




If you have Hitachi model number 50UX58B, 60UX58B, 50UX58K, 60UX58K, 50SBX78B or 60SBX78B and you have the following symptoms you may want to grab a repair kit from www.TvRepairKits.com. They have put together a kit that includes the parts and instructions to fix these models. This is a fairly common problem with the above model numbers. It is typically caused by a blown capacitor and pico fuse. Again, you can get a kit from the above address. 

Here are the symptoms...

Primary Symptom: No Audio or Video. Power light will come on briefly then shut off.
Other Possible Symptoms : The green LEDs on the circuit board light up for a few seconds then turn off.

Hope this helps,

Jun 27, 2008 | Hitachi 60UX58B 60" Rear Projection...

2 Answers

Tv will not power on


If you have Hitachi model number 50UX58B, 60UX58B, 50UX58K, 60UX58K, 50SBX78B or 60SBX78B and you have the following symptoms you may want to grab a repair kit from www.TvRepairKits.com. They have put together a kit that includes the parts and instructions to fix these models. This is a fairly common problem with the above model numbers. It is typically caused by a blown capacitor and pico fuse. Again, you can get a kit from the above address. 
Here are the symptoms...

Primary Symptom: No Audio or Video. Power light will come on briefly then shut off.
Other Possible Symptoms : The green LEDs on the circuit board light up for a few seconds then turn off.

Hope this helps,


May 01, 2008 | Hitachi 50SBX78B 50" Rear Projection...

2 Answers

Hitachi model #60SBX78B


The green led or lights on the board indicate some of the power supplies are working. The key is do you see any come on and then go out. this would indicate which part of the power supply is failing. also there are fuses in the set that do not look like your standard glass fuse. WARNING television generate lethal voltages that will hurt you. extreme care should be used.

Jan 18, 2008 | Hitachi 50SBX78B 50" Rear Projection...

2 Answers

Owners manual


Click on Hitachi (below FIXYA) on this website, type in your model No & search. You will get a shortlist; click on your model,below the page u will get Manual/Guides. Click on the blue, you have your manual on line.

Dec 24, 2007 | Hitachi 50SBX78B 50" Rear Projection...

1 Answer

Hitachi 50SBX78B 50" Rear Projection TV


If the power supply board is the only thing affected, I would suggest calling PTS:1-800-844-7871 and give them the model and what you are looking for. This would be the simpliest thing to do. They rebuild boards and maybe more cost affective than trying to repair yourself. Hope this helps!

Sep 07, 2007 | Hitachi 50SBX78B 50" Rear Projection...

1 Answer

Pink Dot in center of screen.


Well, You have a bad engine, so what other's called lcd projector motor.
This will cost you, the engine states at about $500. I've seen this problem and right after I've change the engine for some
F#$% reson the bulb when, twice on me, that's another $400.

Good Luck

What About Bob
Timmins, Ontario
Home of Shania Twain

Sep 24, 2006 | Hitachi 50SBX78B 50" Rear Projection...

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