Question about Hitachi 50UX57B 50" Rear Projection Television

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Our 10 year old hitachi 50ux27k simply shut off, red light on front when off as well. The on/off switch ''sounds'' like it is making contact, however red on/off indicator light does not light up and no picture. When the front on/ff switch is pushed to the on position, small red light inside the unit does come on. Any simple ideas, thanks in advance. Ron T retarquinio@aol.com

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Slinteriors
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SOURCE: Hitachi 61UDX10B

I would check for burnt resistors as the 150s are interchangeable with the 110s however in alot of hitachis I have seen resistors blow after upgradeing to the higher wattage ICs. I Usually switch out the convergence resistors whenever I go to a higher wattage IC just to be sure. If you need more help let me know.

Posted on May 18, 2008

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SOURCE: no picture or sound

Remove the rear panel. With the TV on you should see a red LED near the center of the PCB. There should also be 5 green leds, 3 to the left a 2 behind. If there is no red leds, check the fuses. If there are no green leds or maybe 1 or 2, disconect PSD5. It's a connector on the left side of the power board that connects to the audio board. It's the 3rd on fro the back. It's labled. With that disconected, turn on the set and look for the green leds. If all 5 light, the power supply is OK and you have a problem beyond that. If they don't all light you have a bad power supply.

Posted on Aug 09, 2008

  • 927 Answers

SOURCE: Hi, my Hitachi Model C43-FD3000-081. On Monday morning i switched it off, but on Monday afternoon when i switch it on - the red light is on but there is not sound and picture please help?

Good Day, sisie;
The Hitachi TV is a good TV. It has a good picture and few problems. Good Luck, big IRISH.

Posted on Sep 01, 2008

Ecollier2012
  • 3459 Answers

SOURCE: Hitachi 50" Projector 50FX18B


Common problem. You can get a repair kit that includes the C707 and E994 + repair instructions from www.TvRepairKits.com

Posted on Dec 20, 2008

asnowman
  • 788 Answers

SOURCE: double picture

Your symptom sounds like a damaged convergence IC.

There are two and large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink.

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.

You will also want to replace the white heat sink2.gif compound that is on the heat sink, just scrape it off, then clean the surface with alcohol. Then apply a thin coating of fresh heat sink compound, if you do not do this important step the new IC's will not last long as the old compound will act as an insulator to the heat transfer.

I would suggest that you contact a service center in your area for a complete diagnosis and repair, as this type of repair can get a little tricky. But if you want to repair the set yourself, just remember to be careful. The capacitors and CRT’s can hold a charge and may shock you.


If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up)
Please Note: If you cannot rate this post with the highest rating, then please do not leave any rating. I am doing this for free and I do not think that any rating other that the best is needed.
If you need further assistance please comment to this post and I will try to help you further.

Posted on Sep 04, 2009

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