Question about Hitachi 50DX01B 50" Rear Projection Television

1 Answer

TV shuts off after 2 to 30 minutes

I have a 50UX26B Hitachi 50 inch rear projection screen TV that was manufactured in 1996. It has always treated me fine until a few months ago. The problem is simple. It will work for about 20 minutes and then shut off. Then I will turn it on and it will last about 1 minute and then again at 20 seconds, and that is about as long as it will work. Please advise on what to do and if I can fix this myself or if I should have someone look at it. Thank you greatly.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 934 Answers
Re: TV shuts off after 2 to 30 minutes

Octo, I'm afraid this one is something you'll have to bite the bullet on and take to the shop. For now it sounds like a bad cap that's going thermal. Meaning that it heats up beyond it's tolerance range and allows the voltages in that circuit to go too high, causing the x-ray protection circuit to shutdown the unit. Because the cap is already warm when you try subsequently it takes less time for the protect circuit to react. A shop will ESR the caps in the suspected circuit. My first suspect would be the SMPS (switch mode power supply). And they would also check the following: Z00451 - I901 Hybrid Ic Str-M6811a 2000465 - 3 Opto-Couplers Ps2501-1 2348253m - D906 Zener Diode Mtz-J22cta 2312171 - Q901 Transistor 2sc3852 2381349 - I905 120v. Hybrid Ic Se120n I doubt seriously any of these would need to be replaced from your description of the symptoms. But if it progresses to an instant shutdown you could have damage to some of the above. Sorry for the less than good news, please don't kill the messenger, but it's not too expensive if it's just caps. Find a reputable shop in your area and take it to them, it will save a few bucks. Good Luck Bill

Posted on Jun 12, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

What replaces the Hitachi 50UX26B/27K from bout 20 to 25 years ago.

Currently these rear projection sets are no longer made by any major company and your only recourse would be to search for a used one--see them on Craigslist a lot and not very expensive.

Let me know if you have questions as I am here to help.

Mar 13, 2012 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

How do i manully converge 50" Hitachi projection

You have to get into whats called DCAM mode to manually converge the set if you don't see a menu option for convergence. Goto the site - they have a DCAM article on their tips page.

Aug 26, 2011 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

On my Hitachi 50UX26B the only button that is working is the power. Neither the remote or the buttons on the TV will change channels or volume. Today it also has a wide black strip in the middle, about 24...

you likely had a power outage, unplug set for at least ten minutes and put power back to it.

Seen this in a lot of these sets and owned two of them myself.

before you rate this solution if you have a question let me know.

Unplugging set and plugging back allows the microprocessor in the set to reset


Jun 23, 2011 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

I have a Hitachi 50UX26B projection TVthat deosn't

Replace Both of your STK ICs they are big black ICs will have Part# on them STK392-570s Call Mats Electronics 1-800-628-1118 Also CKf903 and pico fusses they look like resistors but are yellow or Green 5amps and 6amps

Dec 31, 2009 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

Hitachi 50 inch how to remove screen cover'

Pull off Front speaker cover you will then see bolts holding face plate remove all screws then slide screen upward and Off.


Jan 01, 2009 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

Wasp inside Hitachi 50" rear proj. tv

Pull bottom cover off front you will see screws holding screen on remove all of them then slide screen upwards and OFF.

Nov 27, 2008 | Hitachi 50UX26B/27K 50" Rear Projection...

2 Answers

Hitachi 50UX26B

does the led on the front of the set light up? Is 50UX26B the right model number of your set?

Apr 27, 2008 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

50ux26B - Turns on but white screen only. No Menu...

Good Day, ScottArms;

If you are still having this problem, try one of these solutions:

1. Reset TV by unplugging from wall 3-4 minutes
2. Call factory a factory authorized dealer.
3. Do you own a boat?
4. Start digging a large hole.

Good luck, big IRISH. ps some was joke.

Jan 21, 2008 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

Booming noise

10 years is about life for these, booming noise like a gun shoot?
i would suspect a cap blew up can you open the back and see any burn marks or paper ?

Nov 26, 2007 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

Hitachi Projection Color TV

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 10, 2007 | Hitachi 50UX26B/27K 50" Rear Projection...

Not finding what you are looking for?
Hitachi 50DX01B 50" Rear Projection Television Logo

550 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1187 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Hitachi Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides