Question about Apex Digital PF2720 27" TV

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Apex digital LD4688 turns on then screen goes black

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Posted on Jan 02, 2017

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SOURCE: Apex converter boxes malfunction.

If the converter box wont power on and makes a cyclic whinging noise, it may be one of the 4 470uF caps on the low voltage side of the power supply. Check for domed tops on the caps nearest the fly back transformer (center of the board). I replace all four of those caps just to be sure and it is playing fine now.

Posted on Nov 27, 2009

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I have an Apex LD4688 model and the color just reversed. It's as though I;m looking at a negative


T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD screen are similar, irrespective of its brand and screen size.

Apr 18, 2016 | Apex Digital Televison & Video

1 Answer

The picture is black on our Apex digital LD4688 TV but we have sound--what is wrong?


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

Jan 06, 2016 | Apex Digital Televison & Video

1 Answer

Apex ld4688


Sounds like a vertical scan out section ciruit problem. Contact any service technician.
Gopakumar Gopalan Google

Feb 25, 2014 | Televison & Video

1 Answer

I am trying to connect my acer one netbook with a vga connector to my apex ld4688 lcd tv and tells me no signal


Hi there,

On the acer one hold down the blue Fn button and look for a screen like caracter that is blue too. I think its F5 or F6. Press one of those while the Fn is holded down.

Good luck.

Dec 15, 2010 | Computers & Internet

1 Answer

Remote sensor on the APEX Digital LD4688 television does not appear to be working correctly. I have changed the batteries twince on the remote control that came with the television and have checked that...


The set is slow to respond but you must have a clear shot at the lower right corner of the set. That is where the signal is received. Our sofa cushiopn sometimes gets in the way and must be moved. When a signal is received the blue light comes on.

Nov 27, 2010 | Apex Digital Televison & Video

1 Answer

I have ( Apex digital LD4688 ) I neeed the code. Thank you.


I install dish network. i have tried all versions of dish remotes, . the only one that works is Dish Network 21.0 Learning Remote. it will work with all dish products and i have programed it for this tv apex ld4688 hd and it works great.here is a link for the manual on how to use.
http://www.satelliteguys.us/dish-network-forum/158496-dish-network-21-0-learning-remote.html

Nov 27, 2010 | DISH Network IR Remote Control

1 Answer

Help


Not a home repair take it to a repair store.

May 24, 2007 | Apex Digital PF3230 32" TV

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