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Hannspree ST25 - Potential Digital Tuner problem. When I switch the AV to DTV (digital) the screen goes off/black.

I know the screen itself is fine because when I first switch on the hannspree logo appears.Also if its been unplugged for a while and i switch it on, it defaults to the analogue AV and I can see the black and white fuzzy wuzzy picture so the screen is definitely fine. Then when i switch to DTV, the screen goes off.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 304 Answers

SOURCE: Samsung PS42q7hdx/xeu. digital pictures work fine but no sound i

Replace the Main bd.

Posted on Jul 17, 2009

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diodeic
  • 1622 Answers

SOURCE: NEC - Model NLT-32HDB2. The DTV (digital receiver)

Hello,
You can fix this, all that is needed is to carefully understanding the electronics parts used and having little of basic knowledge in electronics.
The problem is in either power supply or the Y sustain board. The Y sustain board is are relatively large board if out of which go connections to the side of the display , it therefore closer to either the left or the right side of the display , has at least one rather large heat sink on it and far power cables connecting it to the mains power supply .
Often there are fuses on that board , one or more , check them
If they are blown you can try to replace them, but expect them to blow again , usually the whole board needs to be replaced.
Often that need to be done in a service center as there are some adjustment to be made after replacement.

Posted on Aug 22, 2010

VOTIT
  • 2071 Answers

SOURCE: I have a 22" Hannspree HF 237 monitor about a year

Hi,
It is the inverter problem maybe it is loose or cold solder already. You better open the unit and look for the inverter section then re solder all leg parts there.

Regards;
votit

Posted on Feb 08, 2011

  • 8457 Answers

SOURCE: My Hannspree 25" HF257 monitor

Ur tv have a dead 1 or 2 long board that call the LCD inverter boards.These 1 or 2 long LCD inverter boards job are to help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those 1 or 2 long LCD inverter boards for the replacement.

Posted on Feb 28, 2011

SD Tech
  • 14553 Answers

SOURCE: I have a Hannspree ST42DMSB 42 in LCD TV and an intermittent problem with picture - these whie interfrence lines appear from time to time. I've been in touch with Hannspree and thier tech support

It is going to have to go to a service center for repair or replacement of a board or boards---if the reset did not fix it then it has a fault.

Posted on Apr 23, 2012

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