Samsung LT23A350 - No signal on Composite Input

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Ken256
    Member
    • Oct 2009
    • 25
    #1

    Samsung LT23A350 - No signal on Composite Input

    Hello. I have a Samsung LT23A350, model LT23A350A250NDY/ZA. The RF and HDMI inputs are working fine. However I can not get a signal on the composite Line-Input. I've tried 4 different known-good sources; video cameras, DVD, VCR. But the TV just won't display a picture from the composite input. I also tried the 3 component Y,PB,PR inputs. Still no picture. The TV simply says "No Signal".

    I looked on Samsung's web site for a firmware upgrade, but couldn't find anything. This TV uses a pigtail adapter with 5 RCA plugs. I also probed the continuity on this adapter and it seems to have good connections.

    I have not opened the case yet. Does any one know what the problem could be with this TV? Has anyone seen this type of problem before? Is there anything to look for? Thanks!
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • Scruit
      What is a normal composite signal range for a C64?
      by Scruit
      Hello all,


      Working on my first C64 / Breadbin / 250407. Purchased as non-working. Getting black screen.


      More detail below, but for those that want to get right to the question.... Here are a few waveforms comparing the Pin15 output on the VIC chip (luma/sync) to the pin 4 on the AV socket (composite signal).

      https://imgur.com/gallery/PpqcqPY


      My question is: Is the composite waveform range of 0.1v-1v too low for a c64?



      More detail:


      Symptoms are that that I get...
      04-28-2022, 05:33 AM
    • Document Archive
      Samsung Galaxy Book 2 Notebook Specification for Upgrade or Repair
      by Document Archive
      This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
      09-07-2024, 05:50 AM
    • deeruiz
      Issue with Samsung LT23A350
      by deeruiz
      Hello!
      I have a Samsung LT23A350, model LT23A350A250NDY/ZA. The RF and HDMI inputs are functioning properly, but I'm unable to get a signal on the composite line input. I've tested it with four different working sources, including video cameras, a DVD player, and a VCR, but the TV won't display any picture from the composite input. I also tried the three component Y, PB, PR inputs, but still no pictureβ€”just a "No Signal" message.

      I checked Samsung's website for any firmware updates but didn't find anything. This TV uses a pigtail adapter with five RCA plugs, and...
      03-07-2025, 01:16 AM
    • Ellos
      Samsung s21 sim recognized but no signal
      by Ellos
      Hi everyone,

      I'm just starting out with smartphone repairs and picked up a Samsung S21 to work on. Everything functions perfectly except there's absolutely no cellular signal. The SIM card is recognized, WiFi works fine, but zero network signal.

      I've tested my SIM in another phone and it works perfectly with good signal, so it's definitely the phone.

      From what I've read online, this issue is usually caused by the network chip needing to be desoldered and reballed since one of the solder balls might be cracked.

      I think I've located the SOC that...
      2 Photos
      06-27-2025, 01:31 AM
    • Xristakis795
      samsung ue40d503problem reboot logo only when i have input signal from hdmi and tuner
      by Xristakis795
      hi to all
      i have the above model ue40d5003
      the damage was definitely caused in my case by a generator that I installed burned the protection at power supply of tv and created the following problem
      when I have not connected the antenna, any input source lights up normally i can insert on the menu and the tv doesnt reboot
      when I connect,the antenna or hdmi signal however, when it goes to show an image, the image appears momentarily and then restarts appears the logo and the same again.the lights of standby blinking continously
      Can you tell me from your experience...
      02-09-2023, 03:17 PM
    • Loading...
    • No more items.
    Working...