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Startup problem Hitachi 32LD30U

Hi Guys. I have a 32" hitachi LD30U tv which ive had for around 4 years. When i switch the TV on the screen distorts between a scrambled blue screen and a normal screen. Kind of flickering. After around 10 to 15 minutes this stops and the tv works fine and is fully functional. Not sure if it`s on the way out. I`m hoping there is a simple solution which i`m overlooking. Any help would be greatly appreciated. Tom

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  • Hitachi Master
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It sounds that the main power regulator board has the fault. Try by replacing the electrolytic capacitors there. These capacitors can deteriorate its value with time. As the set is about 4 years old, this might be the fault. If it do not help you, replace the power regulator board as card basis. If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/Pull up older posts. Check the site in 'Mosaic' view.It will make search easy.

Posted on Jan 03, 2014

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Posted on Jan 02, 2017

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SOURCE: Hitachi 32LD6600 - When the

Hi i have this tv and last night the screen went black i can hear sound ok but no picture just a black screen, Also i can see dark
outlines /shadows of whats on the tv, can you tell me please what has caused this

Posted on Apr 21, 2008

falter
  • 245 Answers

SOURCE: Hitachi 32'' lcd tv picture runs slow sometime and goes dark

go in touch wit HITACHI costumer help and service and tell them ur problem u have.....how old is ur TV?
hope u get a answer from hitachi....and good luck

Posted on Mar 12, 2009

  • 1 Answer

SOURCE: Problem with Hitachi P50H401 Plasma TV - Will not

I have the same model, P50H401 and it developed the same problem two days ago. This set is 2 1/2 years old in service, being purchased in December 2007. The original manufacture date was October 2007.

The set was turned on and operating at the time and then promptly shut down by itself. The front blue LED power indicator began flashing four times in a loop or cycle.

The flashing LED sequence in this instance points to a problem with one of the following boards: PSU, X-Sus, Y-Sus or SDRs (there are two SDR boards, SDR-U and SDR-D, both are connected off of the Y-Sus board on the left hand side of the frame when rear facing). The set shuts down to prevent further damage to other boards or components.

I could power cycle the set but it would shut down after after a few seconds. Power LED would stay solid, I could hear the PS relays switching, and audio would output through the speakers. Then as the screen was just about to illuminate, the entire set would just shutdown. The blue LED would again go into the 4X flashing sequence.

I could not visually detect any signs of severe component damage on the main PS board. The two large electrolytic capacitors which have been mentioned as problematic in other threads seems fine. The where slightly raised on the top surface, but not blistered or completely blown open.

The only indication of component damage that I could detect visually was on one of the small surface mounted ICs on the SDR-U board.

Through reading other posts on this site, I learned that I was able to remove the suspect SDR-U board and then re-power the set. Doing this proved that the PS, X and Y Sus, and the SDR-D boards where o.k. The PS held, and the lower half of the screen illuminated. (I would only do this for as brief a period as required to determine if the the other boards would function and the screen would illuminate. Do not pro-long operation in this state so as to not cause further damage.)

It was somewhat difficult to locate the correct SDR-U board. My local service rep did not have one in stock, and the Canadian parts distributor was also out of stock. They estimated 10 - 14 business days to order one up from the U.S.A. (Hitachi closed their consumer electronics division in Canada back in 2009.)

By chance, I checked with another service rep in an adjacent town. He had a board for the P55. We did a visual comparison on the two boards and determined that it would be compatable.

The easy part was removing the defective SDR-U board and installing the replacement. The hard part was re-alinging the three ribbon tabs into the respective connectors on the SDR board. Be careful with these ribbons. The other end of each is fused to the plasma panel screen, so if you damage them, your screen is rendered useless.

I initially had the same problems as others have posted with having black or gray lines on the screen when the SDR-U was replaced. After gently adjusting the position of the ribbons as they are seated in the connectors, the lines disappeared. This was a slow and frustrating procedure, but it worked, Be patient.






Posted on Jul 03, 2010

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