Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • ja1870
    Member
    • Jul 2014
    • 16
    • USA
    #1

    Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

    As probably no symptom is unknown to those around here, would appreciate any comments.

    Trying to troubleshoot an intermittent condition for a non-technical senior - remotely.

    When I can get over there, will try a factory reset, but suppose it could be a symptom of a failing cap or other component - and prefer to be forewarned either way, if possible.
    -
    Detail:
    Older 28" (non-Smart) flat screen Samsung UN28H4000AFXZA works perfectly, except when occasionally displays one of two - probably related - symptoms.

    1) Channel displays picture, but no built-in sound output. Changing volume setting, or toggling mute button does nothing. Audio-out ports status is unknown.

    2) Channel "blank" and displays "no signal" message. But signal quality/strength display is fine.

    Taught user to power off and back on - after which all is well.

    Presume the OTA roof antenna is still up with strong signal, and coax tightly connected, and that household power is stable.

    Can't get a definitive answer from the user, but think it usually happens after TV has been on - rather than showing up immediately after power-up.

    Thanks.
    Tags: None
    • R_J
      Badcaps Legend
      • Jun 2012
      • 9549
      • Canada
      #2
      Re: Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

      There does seem to be a firmware update ( ver 1042.0 ) for that model from Samsung, give that a try first https://www.samsung.com/ie/support/m...E32H4000AWXXU/

        Comment

        • Rajnhl
          Senior Member
          • Oct 2018
          • 94
          • India
          #3
          Re: Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

          some samsung led models auto detect input signal as normal composite video signal and component signal. there is switch in socket which loosens after some time due to dust , try to clean it by spraying wd40 in AV input sockets.

            Comment

            • ja1870
              Member
              • Jul 2014
              • 16
              • USA
              #4
              Re: Intermittent Samsung H4000 TV A/V problem. Failing component, or "reset" fixable?

              Thanks for the hints. Found the update to firmware for the exact model and will try that when I can get there. Will be sure to bring a spray to clean as well.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • C152Heavy
                  Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board
                  by C152Heavy
                  Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board

                  Summary for TL-DR readers:
                  • Backlight is intermittent, may come on with TV boot or not. No flickering, never fails during TV on.
                  • Have obtained Samsung schematic & service documents - Can upload if helpful.
                  • Have read ALL applicable threads
                  • C1818 and CP820 replaced as low hanging fruit
                  • CN802 data taken for normal and failed BL operation. SUMMARY: Pin 2 - 5vDet = 3.52 @normal, 0.0 @BL fail. Pin 6 - EPWM = 1.631 @normal, 1.058 @BL fail.
                  • VCC pin (18) of PFC...
                  01-11-2023, 02:53 PM
                • Rubenlily
                  Samsung 65" 4K (don't know model) - is this fixable?
                  by Rubenlily


                  I don't have much info. Seller doesn't share much but says it hasn't been hit or dropped and that it just appeared by itself.

                  Is it fixable and how much should I pay to buy it in this condition?...
                  08-23-2023, 09:15 AM
                • zezone
                  Samsung 48h6400 / This capacitor failing?
                  by zezone
                  Hello,

                  I have a Samsung 48H6400 that experienced a T-con failure, which I fixed by replacing the board. The TV is now working; however, upon further investigation of the power supply board (BN44-00709B) I found this capacitor on the "HOT" side (shown in the picture) with a rating of 120uF / 450V that troubles me. When I measured it with my Atlas meter, which I bought recently, it showed a capacitance of 106.7uF and an ESR of 0.37ohms. Isn't the ESR high and the capacitance a bit low for a rectifier capacitor? Unfortunately, Samyoung's datasheet from the official site...
                  06-24-2023, 10:38 AM
                • 265chemic
                  Samsung LA46A950 aka. LN46A950 - intermittent vertical green lines / distortions
                  by 265chemic
                  Hi All,

                  I have a Samsung LA46A950 that intermittently was displaying issues with evenly spaced vertical green lines only on dark / black areas - this has progressed to more often and blue lines sometimes, as well as a little image distortion.

                  My initial suspicion was the T-CON board, which I took out and cleaned but the issue persists. A heat gun on all of the control boards makes no noticeable change. Ive also reseated the T-CON to panel ribbons (4 of them) and moving them while the panel is on doesn't seem to change the issue.

                  Below are some photos...
                  03-23-2022, 04:53 PM
                • ohren
                  Upgrading a Samsung ue55nu7096u with logic board from an ue55ru7105k -- good idea?
                  by ohren
                  I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.

                  I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.

                  The models launched in 2018 and 2019 respectively....
                  09-08-2023, 05:24 PM
                • Loading...
                • No more items.
                Working...