Question about Grundig GF70-600 TV

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Grundig Xentia - sound but no picture

I have a Grundig that when switched on only gives sound and no picture. Seems everything else is ok i.e. Channel changes etc (you can only tell by sound), but no picture. Any suggestions? Thanks

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Re: Grundig Xentia - sound but no picture

In your tv is malfunctioning high voltage, the audio is generated without the help of high voltage sistem how happens commonly in many other tv

Posted on Dec 10, 2007

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I have a grundig model no gulenar26hdib that is stuck in standby, i have took the back cover off, all caps look ok and there is a slight hissing noise every five or six seconds, can anybody tell me what...

It sounds that the LOT [Line Output Transistor or Line output transformere] to your TV is faulty.

Visit this site for more details. Type in the site name Electro-help either to Google or Yahoo search box [not in the address bar of your browser], and click search. It is an electronic equipments service help site. All details you want are there. Note the position of hyphen in between words in site name, when you type it in. The site will appear as it is in web; subtitled as electronics equipments' repair help.
Picture of line output transformer is given. It may look different from this picture, but remble most.

5_18_2012_2_07_02_am.jpgThis is the picture of Line Output Transistor.5_18_2012_2_08_02_am.jpg

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hello, I had thesame problem. I tried everything, after 14 days, where was TV off a tried the same problem: text " ATS... OK " So a tried hold 3seconds on Grundig driver button "OK" and then the started automatictunnig. After it - averything is function! :)

May 03, 2010 | Grundig GF70-600 TV

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It might be an old hotel tv. Try this, it worked for me

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1 Answer

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Hi mcloud Your problem is your video circuit.the component could be faulty or it has lose solder.have a tech look on your set for repairs.good luck.

Apr 25, 2007 | Grundig GF70-600 TV

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HDTV Cable box conflict

This set does not support 480I in the DTV mode, only 480P and 1080I is supported. Try setting the analog setting in the cable box to 480p and that should take care of watching the set in DTV. Most cable boxes have a setting for format changes in the customer menu, depending on the type of box. If you are able to change the format, then the other inputs will not work since they need a 480I signal, as well as VCRs. Another setup could be to use the S-Video cable or Video input jacks to get a better picture in 480I instead of using the cable input. However, when changing from HD to Analog, you will have to change to the correct input on the set as well. Hope this helps.

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If you are getting the initial 'pang'(!!!???) noise, then it looks like a cold solder in the Horizonbtal Oscillator or Hor. Output stages. The set is trying to power up, but the Horizontal Oscilator is not 'booting' up. Since it is a new set, it must be under warranty....Get it checked by the company Technician.

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3 Answers


No sir its not just an adjust ment or "twiddling" It sounds like its one of the same as your girlfriends set except a differant part such as a capacitor in the vertical curcuit, Output IC or even a defective resistor?? Good Luck

May 18, 2006 | Grundig GF70-600 TV

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